April 2008
Copyright © 2008, Underwriters Laboratories Inc.®
142-04/2008
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
Marking Guide
Swimming Pool Equipment, Spas,
Fountains and Hydromassage
Bathtubs
The growing popularity of home swimming and related activities has led to an increase in the number of
swimming pools, spas, hot tubs and hydromassage bathtubs in use. Each of these products has different UL markings and different installation requirements. The different installation requirements are part of
Article 680 of the National Electrical Code® (NEC), as well as other mechanical, fuel gas, building and
plumbing codes. The different construction and marking requirements are included in the UL and other
Standards covering these products.
UL Marking Guides are updated as necessary due to new product development, changes in the National
Electrical Code®, or the need for clari cation. To con rm the current status of any UL Marking Guide,
please consult the Regulators page of the UL Web Site at http://www.ul.com/regulators/index.html.
This Marking Guide is intended to explain the markings associated with each type of equipment and to
provide guidance on how equipment markings relate to the type of product being installed.
Gary Siggins
Underwriters Laboratories Inc.
455 E. Trimble Rd.
San Jose, CA 95131-1230
Phone: (408) 754-6594
Fax: (408) 689-6594
e-mail: Gary.L.Siggins@us.ul.com
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
Your comments or suggestions are welcome and appreciated. They should be sent to:
TABLE OF CONTENTS
Title
Page
INTRODUCTION .................................................................................................................................... 3
Who Should Use This Guide ........................................................................................................ 3
How To Use This Guide ................................................................................................................ 3
PERMANENTLY INSTALLED SWIMMING POOLS ............................................................................... 3
General ......................................................................................................................................... 3
Junction Boxes ............................................................................................................................. 4
Luminaires .................................................................................................................................... 4
Potting Compounds ...................................................................................................................... 6
Pumps........................................................................................................................................... 7
Transformers ................................................................................................................................ 8
Water Heaters ............................................................................................................................... 8
Heat Pumps .................................................................................................................................. 9
Water Treatment Equipment ......................................................................................................... 9
Ozone Generators ........................................................................................................................ 9
MOTORIZED POOL COVER OPERATORS ........................................................................................ 10
General ....................................................................................................................................... 10
Listing Mark ................................................................................................................................ 10
STORABLE SWIMMING POOLS ......................................................................................................... 10
General ....................................................................................................................................... 10
Luminaires .................................................................................................................................. 10
Pumps......................................................................................................................................... 10
Water Treatment Equipment ........................................................................................................11
FIELD CONSTRUCTED SPAS .............................................................................................................11
General ........................................................................................................................................11
Blowers ........................................................................................................................................11
Controllers ...................................................................................................................................11
Luminaires ...................................................................................................................................11
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Swimming Pool Equipment,Spas,
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Marking Guide
Controls ........................................................................................................................................ 3
Pumps......................................................................................................................................... 12
Suction Fittings ........................................................................................................................... 12
Water Heaters ............................................................................................................................. 12
Water Treatment Equipment ....................................................................................................... 12
Equipment Assemblies ............................................................................................................... 12
SELF-CONTAINED SPAS .................................................................................................................... 13
General ....................................................................................................................................... 13
Listing Mark ................................................................................................................................ 14
Special Markings ........................................................................................................................ 15
HYDROMASSAGE BATHTUBS........................................................................................................... 15
General........................................................................................................................................ 15
Listing Mark ................................................................................................................................ 15
Plumbing Assessment ................................................................................................................ 15
Field Installation .......................................................................................................................... 15
FOUNTAINS ......................................................................................................................................... 16
General ....................................................................................................................................... 16
Submersible Luminaires ............................................................................................................. 16
Submersible Pumps.................................................................................................................... 17
COVERS FOR SWIMMING POOLS AND SPAS ................................................................................. 18
General ....................................................................................................................................... 18
Classification Marking ................................................................................................................. 18
APPENDIX A ........................................................................................................................................ 19
Schematic Diagrams For Luminaire Installations
Fig. 1 Underwater Luminaire for aboveground non-storable swimming pool.
Fig. 2 Underwater Luminaire for aboveground non-storable swimming pool.
Fig. 3 Underwater Luminaire for aboveground storable swimming pool.
Fig. 4 No-Niche Underwater Luminaire.
Fig. 5 Wet-Niche Underwater Luminaire.
APPENDIX B ........................................................................................................................................ 24
UL Guide Information
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Field Installation .......................................................................................................................... 14
INTRODUCTION
WHO SHOULD USE THIS GUIDE
This Guide is intended to assist installers, contractors and inspection authorities in determining the
suitability of UL Listed and Classi ed swimming pool, spa, hydromassage bathtub and fountain products
for use in speci c installations.
The product markings listed in this Guide do not include every possible marking that could be provided
either on a product or in its installation or operating instructions. The purpose of providing these markings
is to indicate the type of text and the location of markings that address features that may be critical in
determining if the product is installed correctly, with respect to the risk of re and electric shock, and for
compliance with applicable requirements in the National Electrical Code® (NEC), NFPA 70, and model
building, plumbing, mechanical and fuel gas codes.
This Guide is organized by the types of installations that may be encountered. The Table of Contents
indicates the types of installations covered in this Guide. Sections of this Guide identify types of products
involved in the various installations, product names used with UL Listing Marks, and special markings
associated with construction or installation features.
In several places, this Guide indicates that a product is intended or is suitable for speci c uses. It is
important to note that these uses are determined by the manufacturer of the product. UL’s requirements
and its evaluations are based on these manufacturer-determined uses.
PERMANENTLY INSTALLED
SWIMMING POOLS
GENERAL
This section covers UL Listed equipment that is wired and plumbed at the installation site for the construction
of a swimming pool permanently installed in the ground or above the ground. The suitability of the
interconnection of various components, as well as the supply connection, is determined by the authority
having jurisdiction. UL evaluates and Lists all electrical and mechanical components of these pools. This
includes water heaters, pumps, Luminaires, water treatment equipment such as ozone generators and
chlorinators, junction boxes, transformers, potting compounds, pool cover operators, pool covers, pool
alarms, and controls, as well as some pre-packaged assemblies of components referred to as equipment
assemblies or “Skid Packs.” Equipment assemblies are usually intended for heated spas installed in the
ground, but units without heaters are also suitable for small swimming pools permanently installed in the
ground.
CONTROLS
General. These Listings cover units intended for the control of equipment used with swimming pools,
spas or hot tubs. They typically consist of combinations of motor controllers and timers. Some may also
have temperature regulating circuits.
Listing Mark. The UL Listing Mark for these products includes a product name such as “Spa Controller,”
“Swimming Pool Controller” or other similar product name.
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HOW TO USE THIS GUIDE
Field Installation. UL Listed controls are intended for permanent connection to the electrical supply
system and are intended to be mounted at a minimum of 5 feet from the inside walls of a swimming pool
or spa. Some units have ground- fault circuit interrupter (GFCI)-protected convenience receptacles and
are intended for mounting at a minimum of 10 feet away. These Listed products are suitable for both indoor
and outdoor use, unless they are marked “For Indoor Use Only.”
Terminals On Load Side of GFCI Controls. A control with terminals on the load side of a ground- fault
circuit interrupter (GFCI), provided to protect the eld-installed conductors of an underwater lighting circuit,
is marked to indicate that the eld-installed conductors shall not occupy conduit, boxes or enclosures with
the conductors of other circuits unless all other conductors are also on the load side of a GFCI.
JUNCTION BOXES
General. Products Listed under this category are suitable for use at the supply end of conduit that extends
directly to the forming shell of a wet-niche luminaire or the mounting bracket of a no-niche luminaire in
a pool, spa, or fountain. These junction boxes are also suitable for use as underwater junction boxes for
fountains and decorative pools.
Listing Mark. The UL Listing Mark for these units includes the product name “Swimming Pool Junction
Box.”
Field Installation. Swimming pool and spa luminaire junction boxes are provided with the means of
independent termination for the equipment grounding conductors inside the box. Each termination for an
equipment grounding conductor will accommodate one conductor in the range of No. 16 to No. 12 AWG. A
junction box marked “Suitable for Use With a Low-Voltage Luminaire” has equipment grounding conductor
terminations suitable for the range of No. 16 to No. 10 AWG. Junction boxes are also provided with means
to terminate No. 8 AWG supplementary equipment grounding conductors for use where the wet-niche
or no-niche luminaire is installed using non-metallic conduit. A junction box and cover combination with
a volume of 100 cubic inches or less is marked with its volume in cubic inches. Installation instructions
indicate the exible cord type and conductor size or the range of cord diameter to be used with an installed
strain relief device. If the strain relief means is to be eld-installed, complete installation instructions are
provided.
LUMINAIRES (See App. A–Figs. 1, 2, 4, 5)
Listing Mark. Underwater swimming pool luminaires come in six basic types as described below. Luminaires
suitable for swimming pool and spa equipment are identi ed by a Listing Mark with one of these luminaire
type designations, along with text to indicate they are suitable for swimming pools.
The Listing Marks of these products include one of the following product names as appropriate:
“Dry-Niche Underwater Luminaire For Swimming Pool,”
“Mounting Bracket For No-Niche Luminaire, ”
“No-Niche Underwater Luminaire For Swimming Pool,”
“Housing For Wet-Niche Luminaire,”
“Wet-Niche Underwater Luminaire For Swimming Pool,”
“Underwater Luminaire for Aboveground Non-Storable Swimming Pools,”
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Enclosures Intended For Direct Connection to a Wet-Niche or No-Niche Luminaire. Controls intended
for such use are marked “Suitable for direct conduit connection to a wet-niche or no-niche luminaire”
or equivalent where visible after installation. Conduit termination locations suitable for such use are
speci cally identi ed.
“Convertible Underwater Luminaire for Aboveground Swimming Pools,” or
“Fiber-Optic Underwater Luminaire for Swimming Pools.”
Luminaires intended for fountains or other vessels not intended to accommodate the complete or partial
immersion of persons have a different identi cation. These luminaires are identi ed as “Submersible
Luminaires. ” A typical Listing Mark would be “Dry-Niche Submersible Luminaire .” Luminaires with only
this type of Listing Mark or product name have not been evaluated for swimming pool or spa installations.
Some luminaires have been evaluated for use as both a swimming pool or spa luminaire and a submersible
luminaire. Luminaires suitable for both uses bear Listing Marks identifying both uses.
Dry-Niche Luminaires. These luminaires are intended for permanent installation only in the wall of a
swimming pool or a eld-fabricated spa, unless accompanying installation instructions describe the option
of installation in the bottom of the pool or spa. These luminaires are intended to be installed with the top
of the lens not less than 18 inches below the normal water level, unless otherwise marked. They are
designed for servicing from the rear through a passageway behind the pool or spa wall, or, if mounted
in the bottom of the pool or spa, in a tunnel underneath the pool or spa. When the luminaire is properly
installed in a housing or “niche,” no water should enter the niche.
Wet-Niche Luminaires. These luminaires are intended for permanent installation only in the wall of a
swimming pool or eld-fabricated spa, unless accompanying installation instructions describe the additional
option of installation in the bottom of the pool or spa. These luminaires are also intended to be installed
with the top of the lens not less than 18 inches below the normal water level, unless otherwise marked.
These luminaires are intended for installation in permanently installed luminaire housings (forming shells)
in which the luminaire will be completely surrounded by water in the normal installation. These luminaires
are marked to indicate the proper luminaire housing or housings with which they are to be used, and the
luminaire housings are marked to indicate the luminaire or luminaires with which the housing is to be used.
These luminaires are provided with a factory-installed, permanently attached exible cord that extends at
least 12 feet outside the luminaire enclosure. This permits the luminaire to be removed from the luminaire
housing and lifted to the pool or spa deck for servicing without lowering the water level or disconnecting
the luminaire from the branch-circuit conductors. Luminaire housings that are intended to be used with
luminaires provided with a No. 12 AWG or larger, Type SJ, SJT or SJTO exible cord are marked for use
with 3/4-inch or larger conduit. It is not intended that conduit reducers and conduit with a trade size less
than the size accommodated by the threaded hub of the luminaire ( xture) housing be used.
No-Niche Luminaires. These luminaires are intended for permanent installation only in the wall of a
swimming pool or a eld-fabricated spa, unless accompanying installation instructions describe the option
of installation in the bottom of the pool or spa. These luminaire are also intended to be installed with the
top of the lens not less than 18 inches below the normal water level, unless otherwise marked. In addition,
these luminaires are intended to be mounted to a bracket that is permanently secured in or on the wall
where the luminaire will be completely surrounded by water. These luminaires, like wet-niche types, are
provided with a factory-installed, permanently attached exible cord that extends at least 12 feet outside
the luminaire enclosure. The luminaires are marked with an identi cation of the mounting brackets for
which they are suitable. The mounting brackets are also marked with an identi cation of the luminaires
for which they are suitable.
Convertible Underwater Luminaires For Aboveground Swimming Pools. These luminaires are initially
con gured as underwater luminaires for aboveground storable swimming use (see Storable Swimming
Pool section). They include provisions for the one-time eld conversion of the luminaires to underwater
luminaires for aboveground non-storable swimming pool use. Once converted, these luminaires are not
suitable for modi cation back to their original con gurations.
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Field Installation:
Fiber-Optic Underwater Luminaires. These luminaires consist of a lamp/electrical enclosure that is
intended to be permanently mounted not less than 5 feet from the pool or spa wall and has a ber-optic
element and associated ttings to transmit the light to the pool or spa. The lamp/electrical enclosure is
intended to be installed above the level at which water splashed from the pool or spa or from another
source may collect.
Metal Conduit Only. A swimming pool luminaire housing (forming shell) for a wet-niche luminaire and a
mounting bracket for a no-niche luminaire that is not provided with a grounding terminal for the supplemental
No. 8 AWG grounding conductor that is required when non-metallic conduit is used is marked “CAUTION
— For proper grounding use only with metal conduit.”
Orientation, Luminaire Housing and Mounting Bracket. If orientation of a swimming pool luminaire
housing (forming shell) or mounting bracket is relied upon to orient the luminaire in a position necessary
for its intended performance, the luminaire housing or mounting bracket is marked to indicate the position
in which it is to be installed.
Underwater Luminaires for Aboveground Non-Storable Swimming Pools. These luminaires are
intended only for permanent installation through or on the wall of an aboveground non-storable pool.
They are intended to be installed with the top of the lens not less than 8 nor more than 10 inches below
the top of the pool wall, unless the luminaire is otherwise marked. They are intended to be permanently
connected to the supply with conduit. They may — for installation, maintenance or servicing — employ a
maximum 5 feet length of jacketed exible cord permanently connected between integral components of
the luminaire. The installation instructions accompanying a luminaire with a non-enclosed exible cord
describe the method of proper routing and securement of the exible cord and the method for installation
of any guards or structural members to reduce the likelihood of unacceptable stress being imposed on
the exible cord.
Salt Water Use. Luminaires that are suitable for use only in fresh water are marked “Fresh Water Only.”
These are intended for swimming pools lled with tap or well water. Luminaires that are suitable for use
in either fresh or salt water are marked “Salt Water or Fresh Water.” These luminaires are suitable for use
in swimming pools lled with tap, well or sea water, as well as tap or well water that has been salt-treated
for pools with chlorine or bromine generators.
Submerse Before Lighting. Luminaires that have been investigated for operation only in contact with
water are marked “CAUTION — To reduce the risk of electric shock, submerse before lighting,” and such
a marking must be visible after installation of the luminaire.
Special Markings:
One-Time Thermal Protection. Swimming pool luminaires employing a one-time operation, thermal
sensitive device are marked “Out of water operation (for longer than 3 min.) will permanently disable
luminaire.” Words in parentheses are optional.
Inoperable Out of Water. Swimming pool luminaires designed to be inoperable when not submerged
are marked “This luminaire will not light out of water.”
POTTING COMPOUNDS
General. This Listing covers compounds intended to encapsulate the grounding and bonding conductor
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Orientation, Luminaire. A swimming pool luminaire that depends on its location or position to function
correctly is marked to indicate the way it is to be installed or used, unless the position is obvious.
splices or terminations in swimming pool and spa equipment such as luminaires , luminaire housings
(forming shells) and junction boxes where the splices or termination may be exposed to salt-free pool or
fountain water and sunlight for varying lengths of time, including continuous exposure.
These potting compounds are also suitable for use to ll underwater junction boxes. The container or
package is marked to identify that they have been evaluated for adhering to stainless steel, copper alloy,
and any other materials, if applicable.
PUMPS
General. UL Listed pumps include those intended for permanent plumbing for use with permanently
installed pools and spas, as well as portable units intended for use with storable pools.
A pump with means for permanent wiring connections or a 3-foot exible cord and plug, suitable for
permanently installed pools is marked:
“This Pump is for Use with Permanently Installed Pools Only — Do Not Use with Storable
Pools. A permanently installed pool is constructed in or on the ground or in a building such
that it cannot be readily disassembled for storage. A storable pool is constructed so that it may
be readily disassembled for storage and reassembled to its original integrity.”
Only pumps with this marking should be used with permanently installed pools.
Listing Mark. UL Listing Marks with the product names “Swimming Pool Pump,” “Spa Pump,” or “Swimming
Pool or Spa Pump” indicate units suitable for use with swimming pools and spas. A unit for which the name
includes “Spa Pump” has also, in addition to the swimming pool pump requirements, been evaluated for
use with heated (122°F) water.
Field Installation:
Ground-Fault Protection. All cord-and-plug-connected pumps are intended to be connected to a circuit
protected by a GFCI and are so marked. Each unit is provided with the following marking or equivalent:
“WARNING — Risk of electric shock. Connect only to a grounding type receptacle protected by a groundfault circuit interrupter (GFCI).”
Supply Connection. Unless constructed as indicated below, pumps intended for permanent plumbing
connection are provided with means for permanent wiring connections.
Pumps intended for permanent plumbing connection and location at a minimum of 5 feet from the inside
walls of a pool or spa may be provided with a 3-foot cord terminating in a grounding-type attachment plug
that is the locking type.
Pumps intended for permanent plumbing connection and location at least 10 feet from the inside walls
of a pool or spa may be provided with a 3-foot power supply cord with an attachment plug that is not the
locking type. These units are marked “CAUTION — To reduce the risk of electric shock, install at least 10
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Listing Mark. The Listing Mark of Underwriters Laboratories is provided on the smallest unit container in
which the product is packaged. The UL Listing Mark includes the product name “Swimming Pool, Fountain
and Spa Equipment Conductor Splice Potting Compound.” Any of the three locations — “swimming pool,”
“fountain” or “spa equipment” — may be omitted. As the markings on the smallest unit container are the
means by which the authority having jurisdiction determines if the product is UL Listed, the unit container
should be retained at the site.
feet from the inside walls of a pool. Do not use an extension cord.”
Pumps supplied with a minimum 25-foot cord and attachment plug are intended for use with storable
pools only and are so marked. These pumps are not suitable for permanently installed pools (in-ground
and aboveground non-storable).
TRANSFORMERS
General. Products Listed in this category are enclosed transformers that are the two-winding type and
have a grounded metal shield between the primary and secondary windings. They are intended to supply
luminaires in fountains, swimming pools, and spas in accordance with Article 680 of the NEC®. The
primary rating is 120 volts and the maximum secondary rating is 15 V rms and 1 kVA.
Special Markings:
Swimming Pool Juntion Box Use. Unless marked otherwise, these transformers are not suitable for
connection to a conduit which extends directly to a wet-niche or no-niche luminaire. Transformers not
suitable for this use are to be used with a swimming pool juntion box.
Water Heaters
Listing Mark. The UL Listing Mark with the product name “Swimming Pool Heater” or “Spa Heater”
indicates suitability for use with permanently installed pools. Gas- or oil- red units are identi ed by the
product names “Gas-Fired Swimming Pool Heater” and “Oil-Fired Swimming Pool Heater”.
Field Installation:
Flow Rate. If a heater is marked with a minimum required water circulation capacity ( ow rate), the
swimming pool must have pumps with at least that capacity and circuit interlocks that permit heater
operation only when the water is being circulated. This ow rate would either be marked on the circulating
pump or provided in literature accompanying the pump.
Leakage Current Collectors. (Electrical Heaters) If leakage current collectors are not integral to the heater
but are provided for eld installation, the installation and grounding of the collectors must be exactly as
indicated in the installation instructions.
The heater grounding conductor and the leakage current collector grounding conductors should be the
same size or larger than the power supply conductors and not smaller than No. 12 AWG.
Outdoor Use. Only heaters marked “Outdoor Use” are suitable for installation outdoors.
Special Markings:
Shutoff Valve. If the heater installation instructions indicate use of a shutoff valve, the heater is marked
with its maximum working pressure. The heater is marked to indicate it should be used with a pressure
relief valve certi ed as complying with requirements of either (1) the ASME or (2) ANSI Z21.22, Relief
Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems. The heater is also marked to
indicate that the pressure relief valve shall have a marked maximum set pressure not to exceed the marked
maximum working pressure of the water heater and that the valve inlet should be able to accommodate
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Listing Mark. The UL Listing Mark for these units includes by the product names “Fountain Transformer”,
“Swimming Pool Transformer,” “Spa Transformer,” or “Fountain, Swimming Pool or Spa Transformer.”
a 3/4-inch or larger trade size pipe.
Heat Pumps
Listing Mark. The UL Listing Mark with a product name “Swimming Pool Heat Pump,” “Spa Heat Pump,”
or “Swimming Pool and Spa Heat Pump” indicates suitability for use with permanently installed pools.
Field Installation:
Outdoor Use. Only heat pumps marked “For Outdoor Use” or the equivalent are suitable for installation
outdoors.
General. Most water treatment equipment is Listed in the category “Water Treatment Equipment” (WDLC).
This category includes chlorinators, ozone generators, ion generators and similar equipment intended to
sanitize water in pools, spas and hot tubs. It also includes equipment designed to monitor water chemistry
in pools, spas and hot tubs. This monitoring equipment may also have the capability of adding chemicals
to the water to adjust water chemistry. Ozone generators may also be Classified in the category “Ozone
Generators” (WCKA).
The ability of this equipment to sanitize pool and spa water has not been determined. Equipment that has
been evaluated for sanitation is Classified in accordance with the requirements of the National Sanitation
Foundation Standard Number 50 and can be located under the category (WCNZ) Pool and Spa Equipment
Classified in accordance with NSF Standard Number 50”.
Listing Mark. The UL Listing Mark for water treatment equipment other than ozone generators includes
the product name “Swimming Pool Chlorinator,” “Spa Chlorinator,” “Swimming Pool and Spa Chlorinator,”
or other appropriate product name.
Unique Hazard Considerations. Hazards related to the chemicals generated from chlorinators, brominators,
or ion generators are not evaluated by UL as part of Listing or Classification investigations.
OZONE GENERATORS
Listed Units. Physiological effects of the ozone output of UL Listed units marked “For Outdoor Use Only”
have not been evaluated. Listed units marked for indoor use have been evaluated in a standard room
installation to determine if any ozone emitted from a test tank is within established limits. Listed units are
evaluated to determine that no ozone is emitted from unintended locations of the unit during normal use
or abnormal operation such as a blocked output or no flow through a venturi.
The Listing Mark for these units has the product identity “Ozone Generator.”
Classified Units. Physiological effects of the ozone output of Classified units have not been evaluated.
Classified units are evaluated to determine that no ozone is emitted from unintended locations of the unit
in normal use or abnormal operation such as a blocked output or no flow through a venturi.
Classified units are identified by the following Classification Marking on the product:
“OZONE GENERATOR
CLASSIFIED BY UNDERWRITERS LABORATORIES INC.
WITH RESPECT TO RISKS OF ELECTRIC SHOCK,
FIRE AND MECHANICAL INJURY ONLY”
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WATER TREATMENT EQUIPMENT
Installation. Ozone generators are not intended for eld installation under the skirt of a spa or hot tub,
unless the spa is speci cally marked for this use.
MOTORIZED POOL COVER OPERATORS
GENERAL
LISTING MARK
The UL Listing Mark for these products includes the product name “Swimming Pool Cover Operator,” “Spa
Cover Operator” or “Pool Cover Operator.”
STORABLE SWIMMING POOLS
GENERAL
Equipment Listed for use with storable pools includes pumps, Luminaires (Lighting (Fixtures) and water
treatment equipment. This equipment is Listed under the product categories of “Pumps” (WCSX) and
“Luminaires and Forming Shells” (WBDT), and “Water Treatment Equipment”(WDLC).
LUMINAIRES (See App. A–Fig. 3)
General. Underwater luminaires for aboveground storable swimming pools are intended for temporary
installation only through or on the wall of an aboveground storable pool. UL considers a storable pool to
be one that is constructed above the ground and is capable of holding water to a maximum depth of 42
in. (1.07m). These luminaires are intended to be installed with the top of the lens not less than 8 nor more
than 10 inches below the top of the pool wall unless the luminaire is otherwise marked. These luminaires
are provided with a minimum of 25 feet of jacketed exible cord, which is intended to be routed away from
the pool to the transformer or ground- fault circuit interrupter assembly. The transformer or GFCI assembly
is intended to be temporarily mounted to a building or structure and is provided with a minimum 3-foot/
maximum 6-foot power supply cord for connection to the supply source.
Listing Mark. The UL Listing Mark for these products includes the product name “Underwater Luminaire
for Aboveground Storable Swimming Pool.”
PUMPS
Listing Mark. Pumps suitable for this application have a Listing Mark with the product name “Swimming
Pool Pump” or “Swimming Pool Pump or Spa Pump.”
Storable Pools Only. The type of pump suitable for use with storable pools has a 25-foot exible cord
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Motorized pool cover operators are covered by the product category “Swimming Pool and Spa Cover
Operators, Electric” (WDDJ). They are evaluated for re, electric shock and mechanical hazards only.
Some motorized pool cover operators may incorporate pool covers Classi ed under the category “Covers
For Swimming Pools and Spas” (WBAH). Unless Classi ed as a power safety cover under the category
“Covers For Swimming Pools and Spas,” (WBAH), a cover provided with the operator has not been
evaluated as a safety cover.
and attachment plug. It is marked:
“This Pump is for Use with Storable Pools Only — Do Not Use with Permanently Installed
Pools. A storable pool is constructed so that it may be readily disassembled for storage and
reassembled to its original integrity. A permanently installed pool is constructed in or on the
ground or in a building such that it cannot be readily disassembled for storage.”
Field Installation:
Ground-Fault Protection. These units are intended for connection to circuits protected by ground-fault
circuit interrupters and are marked “WARNING — Risk of electric shock. Connect only to a grounding type
receptacle protected by a ground-fault circuit interrupter (GFCI).”
WATER TREATMENT EQUIPMENT
General. UL Listed chlorinators or brominators, as well as Listed or Classi ed ozone generators, may be
used with this equipment. Their limitations are speci ed in the section titled “PERMANENTLY INSTALLED
SWIMMING POOLS.”
FIELD CONSTRUCTED SPAS
GENERAL
This section covers eld constructed spas or hot tubs in which separately Listed equipment is plumbed and
wired in the eld. This equipment includes heaters, blowers, pumps, controls, water treatment equipment,
luminaires, heat pumps, transformers and suction ttings. Each is intended to be installed in accordance
with the National Electrical Code®, NFPA 70, and model building, plumbing, mechanical, fuel gas codes,
manufacture’s instructions, and with provisions detailed in the section following.
A group of the above components may be pre-packaged in a Listed equipment assembly. These assemblies
are designed for installation with a eld-supplied tub.
BLOWERS
General. UL Listed blowers are intended for both indoor and outdoor use, unless marked otherwise.
Unless otherwise indicated in the installation instructions, blowers should be mounted at least 12 inches
above the over ow of a spa or hot tub.
CONTROLLERS
These are identical to and should be used with the same limitations as those previously speci ed under
“PERMANENTLY INSTALLED SWIMMING POOLS.”
LUMINAIRES
Luminaires used in this installation are the same as those previously detailed under “PERMANENTLY
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Double Insulation. Pumps with a minimum 25-foot supply cord are double insulated and have inaccessible
metal parts grounded with the equipment grounding conductor terminated at the attachment plug. These
pumps do not have a bonding connector.
INSTALLED SWIMMING POOLS.”
PUMPS
Pumps in this application are essentially identical to those previously discussed under “PERMANENTLY
INSTALLED SWIMMING POOLS.” The one exception is the product name accompanying the UL Listing
Mark should indicate if the pump is either a “Spa Pump” or “Swimming Pool or Spa Pump.” A pump with
a Listing Mark indicating only “Swimming Pool Pump” has not been investigated for use with maximum
50° C (122°F) water.
General. These units are intended to be provided at all the intake ports of the spa. They have been
evaluated to determine that they would not pose a hair entrapment danger when operated at or below their
marked ow rates. The maximum ow through the suction tting should not exceed the marked maximum
ow rate of the suction tting.
WATER HEATERS
Water heaters can be used with the same limitations described in “PERMANENTLY INSTALLED SWIMMING
POOLS.”
WATER TREATMENT EQUIPMENT
Water treatment equipment can be used in this type of installation in accordance with the limitations previously
detailed for water treatment equipment under “PERMANENTLY INSTALLED SWIMMING POOLS.”
EQUIPMENT ASSEMBLIES
General. Equipment assemblies (“Skid Packs”)are pre-packaged combinations of equipment such as
pumps, lters, heaters, blowers, luminaires, and controls. They are intended to be permanently plumbed
to a eld supplied spa or hot tub using non-metallic piping only. They are designed for indoor or outdoor
use and are intended to be installed at least 5 feet from the inside walls of a spa or hot tub.
UL Listed equipment assemblies have not been evaluated for below-grade installation and are not suitable
for use within an outer enclosure, or under the skirt of a spa or hot tub, unless so marked.
Listed equipment assemblies that contain a gas- red water heater have not been evaluated for (1) indoor
use, (2) use within an outer enclosure, or (3) use under the skirt of a spa or hot tub, unless so marked.
Some equipment assemblies do not contain a heater and, therefore, do not have a water temperature
regulating control or water temperature limiting control. Units of this design are intended to have a
water heater, a temperature regulating control, and a temperature limiting control provided in the nal
installation.
Listing Mark.
appropriate:
The UL Listing Marks for these products include the following product names, as
“Equipment Assembly for Spa/Hot Tub,”
“Hot Tub Equipment Assembly,” or
“Spa Equipment Assembly.”
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SUCTION FITTINGS
Field Installation:
GFCI Protection. Cord-connected equipment assemblies have GFCI protection provided. Convertible
equipment assemblies have protection provided in the 120-volt configuration. They are protected in the
240-volt configuration, unless marked “Connect To A Circuit Protected By A GFCI When Connected In
The 240-volt Mode” or the equivalent. Permanently connected equipment assemblies may or may not
have integral GFCI protection. If not, the installation instructions indicate the unit should be connected to
a circuit protected by a GFCI. If integral GFCI protection is provided, it protects all circuits.
Suction Fittings. To reduce the risk of hair and body entrapment, equipment assemblies are intended for
use with a UL Listed suction fitting, the flow rate of which meets or exceeds the flow rate marked on the
equipment assembly. Each equipment assembly is marked with “WARNING — PREVENT DROWNING”
1. Supervise children at all times. 2. Attach spa cover after each use. Install a suction fitting with a marked
flow rate of not less than ___ gallons per minute.” In this case, the ___ is filled in by the manufacturer
with the gallons per minute flow rate of the assembly.
Supply Connection. These units may be designed for either permanent wiring or connection with a flexible
cord and plug. They may also be designed for field convertibility from a 120-volt cord connected configuration
to a 240-volt permanently wired configuration only. The electrical rating includes the minimum supply
conductor ampacity and the ampere rating of the supply conductor overcurrent protective device.
Underwater Lighting Circuit. Equipment assemblies that have terminals on the load side of a groundfault circuit interrupter, which protects field-installed conductors of an underwater lighting circuit, are
specially marked. The markings indicate that the field-installed conductors shall not occupy conduit, boxes
or enclosures with conductors of other circuits, unless all other conductors are also on the load side of
a ground-fault circuit interrupter. Suitable segregation or isolation of the circuits is maintained within the
equipment.
Special Markings:
Multiple Disconnects. If more than one disconnect switch is required to disconnect all power to a unit, the
unit is marked — in a place readily visible to service personnel prior to disconnecting the main supply for
the unit — with the word “WARNING” and the following or equivalent, “PREVENT ELECTROCUTION —
Disconnect all supply connections before servicing. This appliance has _______ supply connections.”
SELF-CONTAINED SPAS
GENERAL
This section covers self-contained spas for aboveground use, for household or commercial use, and
for indoor and outdoor use, unless marked otherwise. Spas are not designed or intended to be drained
after each use. They are intended for installation in accordance with Article 680 of the National Electrical
Code®, NFPA 70 and model building, plumbing, mechanical, fuel gas codes, and the manufacturer’s
installation instructions.
Units come in three basic designs:
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Disconnecting Means. A convertible or permanently connected unit may be additionally provided with
an integral disconnecting means not intended to substitute for that required by NEC® section 680-12.
Most units are shipped completely assembled from the factory and require only supply
connection in the field.
2.
Some units, referred to as “Knockdown” spas, are types for which a spa shell, equipment
assembly and skirt are shipped separately. The shell and equipment assembly are plumbed
at the factory and connected together in the field with threaded unions.
3.
Additional units, referred to as “Modular” spas, are similar to “Knockdown” units except they are
plumbed in the field. All parts are provided and pre-cut, if needed, and accompany applicable
instructions and accessories such as polyvinyl chloride (PVC) solvent. They are intended
for assembly by untrained users and the suitability of all interconnections and wiring is to be
determined by authorities having jurisdiction.
“Modular” or “Knockdown” designs are accompanied by detailed assembly instructions and have identifying
markings on each sub-assembly. The names or model numbers are specified in the assembly instructions
so the user can correctly assemble the unit and the inspection authority can determine that the unit was
assembled using the correct parts.
LISTING MARK
The UL Listing Mark includes the product name “Self-Contained Spa.”
FIELD INSTALLATION:
Branch-Circuit Protection. A permanently-wired spa intended to be protected by a branch-circuit
overcurrent device rated less than the maximum rating of the branch-circuit overcurrent device permitted
by the NEC® is marked to indicate the maximum rating of the branch-circuit overcurrent device for which
the unit has been investigated and found acceptable. The electrical rating includes the minimum supply
conductor ampacity and the ampere rating of the supply conductor overcurrent protective device.
Gas-Fired Heaters. Self-contained spas may be provided with gas-fired heaters. Spas with gas-fired
heaters are intended for permanent wiring and permanent installation, and unless otherwise marked, are
intended for outdoor use only.
Options. The installation instructions of self-contained spas may indicate options such as lighting kits,
blowers, additional pumps or ozone generators. These option kits are only to be used in spas with installation
instructions that indicate the spas are factory-wired to accommodate them.
Supply Connection. Self-contained spas may be cord-connected, convertible or permanently wired. A
convertible spa is shipped from the factory with a power supply cord but is designed for field conversion to
a permanently wired configuration, either 120-volt, 240-volt or both. Once a convertible spa is converted
to permanently wired, it is not intended to be returned to a cord-connected configuration.
Ground-Fault Protection. Cord-connected spas have GFCI protection provided. Convertible spas have
protection provided in the 120-volt configuration. They are also protected in the 240-volt configuration,
unless marked “Connect To A Circuit Protected By A GFCI When Connected In the 240-volt Mode,”
or equivalent. Permanently connected spas may or may not have integral GFCI protection. If not, the
installation instructions indicate the unit should be connected to a circuit protected by a GFCI. If integral
GFCI protection is provided, it protects both 120-volt and 240-volt circuits.
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1.
SPECIAL MARKINGS:
Spa Caution Marking. To help reduce the risk of electric shock from other electrical appliances used
near the spa, each unit is marked “WARNING” — Risk of Electrical Shock. Do not permit any electrical
appliance (such as a light, telephone, radio, or television) within 5 feet of this spa.”
HYDROMASSAGE BATHTUBS
This section includes UL Listed indoor hydromassage bathtubs (whirlpool bathtubs) for residential or
commercial use. They are intended for permanent connection to the building plumbing. The hydromassage
bathtub consists of a drainable tub and a water or air pump, and may include other equipment such as
a luminaire, control, air blower, heater or suction fittings. These units are intended to be drained after
each use. These units are not intended to be field assemblies of Listed parts. Although they may include
a Listed swimming pool or spa pump, the entire unit — consisting of shell, pump and any other related
electrical components — is evaluated and Listed as a complete appliance. The pump is not intended to
be installed away from the tub.
LISTING MARK
These Listings appear in the Electrical Appliance and Utilization Equipment Directory (Orange Book
and online at www.ul.com/database). The Listing Mark for this category contains the product name
“Hydromassage Bathtub.” The Listing mark for heaters intended to be installed after the bathtub leaves
the factory contains the product name “Hydromassage Bathtub Accessory”.
PLUMBING ASSESSMENT
UL Listed hydromassage bathtubs may also be Classified to either the water retention requirements or all
requirements of ASME/ANSI A112.19.7M - +. The combined Listing Mark/Classification marking consists
of the Listing Mark described at the beginning of this section and the following marking: “Also Classified by
Underwriters Laboratories Inc. in accordance with “*,” where “*” is one of the statements detailed below:
1.
2.
“ANSI A112.19M - +”
“Water Retention Test requirement from ANSI A112.19.7M - +”
+ issue date of Standard or latest addendom.
FIELD INSTALLATION:
Supply Connection. Most units are intended for permanent connection to the branch circuit. Bathtubs
may be provided with a factory- installed maximum three-foot length of jacketed flexible cord terminating
in an attachment plug.
Branch-Circuit Protection. A unit intended to be protected by a branch-circuit overcurrent device rated
less than the maximum rating of the branch-circuit overcurrent device permitted by the NEC® is marked
to indicate the maximum rating of the branch-circuit overcurrent device for which the unit has been
investigated and found acceptable.
Factory Configuration Information. Each hydromassage bathtub is provided with a marking on the
wiring diagram, in the installation instructions or on a separate configuration sheet, to identify the factory15
Swimming Pool Equipment,Spas,
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Marking Guide
GENERAL
installed components of the unit. These components include pumps, controls, heaters, luminaires, and
supply cords. The con guration marking and the installation instructions are intended to be available
during installation and inspection.
Ground-Fault Protection. Whether they are permanently wired or use a cord and plug, these units are
intended to be protected by a ground-fault circuit interrupter. Each unit is plainly marked with the following or
equivalent statement: “Connect only to a circuit protected by a ground-fault circuit interrupter (GFCI).”
Options. Hydromassage bathtubs may have option kits indicated in the installation instructions. These
typically include blowers, heaters or luminaire assemblies. Hydromassage bathtubs intended for heaters
to be installed after the bathtub leaves the factory are factory con gured with a tting to be removed and
replaced by the heater. These units are marked “Suitable for Field-Installed Heater Accessory” and “Use
only Accessory Heaters Marked for Use With This Bathtub.” Bathtubs not factory-con gured for a eldinstalled heater are marked “Not Suitable for Field-Installed Heater.”
FOUNTAINS
GENERAL
This section covers fountains with UL Listed equipment assembled and connected in the eld. Electrical
products for use in fountains are Listed under the following categories: “Pumps, Motor-Operated Water”
(REUZ), “Plumbing Accessories” (QMTX) and “Submersible Luminaires (Fixtures)” (IFEV), “Pumps” (WCSX)
and “Industrial Control Panels” (NITW).
SUBMERSIBLE LUMINAIRES
General. Products Listed in this category include submersible luminaires and submersible junction
boxes. Submersible luminaires for use in fountains are not suitable for use in vessels intended for partial
or complete immersions of persons.
Listing Mark. UL Listed submersible luminaires and junction boxes for use in fountains have a Listing
Mark with the product names:
“Mounting Bracket for No-Niche Luminaire (Fixture),”
“Housing for Wet-Niche Luminaire (Fixture),”
“Submersible Luminaire (Fixture) Wet-Niche Type,”
“Submersible Luminaire (Fixture) Dry-Niche Type,”
“Submersible Luminaire (Fixture) No-Niche Type,”
“Submersible Luminaire (Fixture) Special Use,” or
“Submersible Junction Box.”
Field Installation:
Dry-Niche Submersible Luminaire. This luminaire type is intended for permanent installation only in
the wall of built-in fountains, unless accompanying installation instructions describe additional option
of installation in the bottom of the fountain. These luminaires are designed for servicing from the rear
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Swimming Pool Equipment,Spas,
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Multiple Supply Sources. A hydromassage bathtub may have provision for a maximum of two supply
sources. If the unit is cord-connected, each single source must be an individual branch circuit rated not
more than 20 amperes. Units requiring more than one disconnect switch to disconnect all power are
provided with a marking warning to this effect.
Wet-Niche Submersible Luminaire. These luminaires are intended to be installed in the wall of built-in
fountains, unless accompanying installation instructions describe additional option of installation in the
bottom of the fountains. They are intended for installation in a permanently installed luminaire housing
(forming shell) in which the luminaire will be completely surrounded by water. These luminaires are marked
to indicate the proper luminaire housing or housings with which they are to be used. Luminaire housings
are marked to indicate the luminaire or luminaires with which the luminaire housings are to be used.
These luminaires are provided with a factory-installed, permanently attached exible cord that extends
at least 12 feet outside the luminaire enclosure to permit the luminaire to be removed from the luminaire
housing and lifted to the fountain deck for servicing without lowering the water level or disconnecting the
branch-circuit conductors. Luminaires with longer cords are available for installations with a junction box or
splice enclosure located where a longer cord is necessary to permit luminaire removal from the luminaire
housing and placement on the deck for servicing.
No-Niche Submersible Luminaire. These luminaires are intended to be installed on the walls of builtin fountains, unless accompanying installation instructions describe the additional option of installation
in the bottom of the fountains. These luminaires are to be mounted to a bracket (luminaire housing)
and permanently secured in or on the wall, with the luminaire completely surrounded by water. These
luminaires are provided with a factory-installed, permanently attached exible cord that extends at least
12 feet outside the luminaire enclosure. The cord is intended to function similarly to those provided with
a wet-niche type luminaire.
Submersible Luminaire Special Use Type. These luminaires are intended to rest directly on the
fountain oor or on other surfaces within the perimeter of the fountain. The luminaires are provided with
a permanently attached exible cord intended to terminate in a submersible junction box or to be routed
out of the fountain through conduit to a junction box.
Metal Conduit Only. A submersible luminaire housing (forming shell) that does not have a grounding
terminal is marked “CAUTION — For proper grounding use only with metal conduit.”
Orientation, Luminaire. A submersible luminaire that depends on its location or position to function
correctly is marked to indicate the way it is to be installed or used, unless the position is obvious.
Orientation, Luminaire Housing and Mounting Bracket. If a submersible luminaire housing (forming
shell) is relied upon to orient the luminaire in a position that is necessary for its intended performance, the
luminaire housing or mounting bracket is marked to indicate the position in which it is to be installed.
Submerse Before Lighting. Luminaires that have been investigated for operation while submersed under
water are marked “Submerse Before Lighting” or the equivalent, and such a marking must be visible after
installation of the luminaire.
SUBMERSIBLE PUMPS
These are UL Listed under the product categories of “Plumbing Accessories” (QMTX) or “Pumps, MotorOperated Water” (REUZ). The Listing Mark product name is “Submersible Pump” or equivalent. These
pumps have not been investigated for use with or in proximity to swimming pools or spas.
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Swimming Pool Equipment,Spas,
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through a passageway behind the fountain wall or, if mounted in the bottom of the fountain, in a tunnel
underneath the fountain. For the purposes of installation, maintenance or servicing, the luminaire may
include a factory-installed length of exible cord terminating in an attachment plug. A receptacle outlet
assembly for connection of the attachment plug to the branch-circuit may be provided as an integral part
of the niche included with the luminaire.
COVERS FOR SWIMMING POOLS AND SPAS
GENERAL
This section covers swimming pool and spa safety covers, including both manually and power-operated
types. Also included are special-purpose covers such as energy conservation or solar energy covers.
Manual safety covers are intended to impede access to the contained body of water. They are provided
with means for removing signi cant levels of collected surface water.
Other types of covers such as energy conservation or solar energy covers are not intended to impede
access to the contained body of water. Such covers are marked “This Is Not A Safety Cover.”
CLASSIFICATION MARKING
The Classi cation marking for these products includes the names “Manual Safety Cover,” “Power Safety
Cover” or “Pool Cover.”
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Power safety covers are barriers that can be placed over the water area and are removed with a motorized
mechanism. They are intended to impede access to the contained body of water. A power safety cover
includes an operator that is Listed under the category “Swimming Pool and Spa Cover Operators, Electric”
(WDDJ).
APPENDIX A
Schematic Diagrams for LUMINAIRE Installations
Junction
Box
Luminaire
(Lighting Fixture)
5' cord
Transformer
conduit
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Fig. 1 Underwater Luminaire for
aboveground non-storable swimming pool.
Fig. 2 Underwater Luminaire for
aboveground non-storable swimming pool.
Listed
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
Company
XXXX
Underwater Luminaire for
Aboveground Non-storable
Swimming Pool
5' cord (max)
20
120/12V
Transformer
Assembly
On/Off
Switch
25' cord (min)
Luminaire
(Lighting Fixture)
GFCI protected
receptacle
21
3'-6' cord
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
Fig. 3 Underwater Luminaire for
aboveground storable swimming pool.
Swimming Pool
Junction Box
No. 8 AWG
solid bonding
conductor to
common pool
bonding grid
Water Level
to Panelboard
No-niche underwater
luminaire (lighting
fixture) and mounting
bracket
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Swimming Pool Equipment,Spas,
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Fig. 4 No-Niche Underwater Luminaire.
Fig. 5 Wet-Niche Underwater Luminaire.
Water Level
to
Panelboard
A
C
B
Wet-niche underwater
luminaire (lighting
fixture) and luminaire
(fixture) housing
(forming shell)
A. UL Listed swimming pool potting compound encapsulating
supplemental equipment grounding conductor terminal.
B. No. 8 AWG insulated supplemental equipment grounding
conductor where nonmetallic conduit used.
C. No. 8 AWG solid bonding conductor to pool common bonding
grid.
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Swimming Pool
Junction Box
APPENDIX B
UL GUIDE INFORMATION
USE AND INSTALLATION
This category covers electrical equipment systems intended for installation in accordance with Article
680 (Part V) and Article 682 of ANSI/NFPA 70, “National Electrical Code.” Equipment may consist of
pumps (including submersible pumps), lights, control panels, and timers. Equipment may also include
wind sensors, light detectors, freeze prevention equipment, and the like. These systems may be
submersible or intended for remote installation. Systems suitable for outdoor use are so marked.
RELATED PRODUCTS
Similar portable equipment is covered under Fountains, Small Decorative (IQRW).
Control panels for use with equipment intended for water-play fountains and water playground areas,
swimming pools and spas, or fountains with water in common with swimming pools are covered under
Controls (WAWU).
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ).
REQUIREMENTS
The basic standards used to investigate products in this category are ANSI/UL 778, “Motor-Operated
Water Pumps,” UL 676, “Underwater Lighting Fixtures,” and UL 508A, “Industrial Control Panels.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Architectural Fountain,” “Floating Fountain” or
“Floating Fountain Equipment,” or other appropriate product name as shown in the individual Listings.
SUBMERSIBLE LUMINAIRES (IFEV)
USE
This category covers submersible luminaires intended for installation in accordance with Article 680
of ANSI/NFPA 70, “National Electrical Code,” in fountains and similar water-containing vessels not
intended to accommodate the complete or partial immersion of persons. For Listings of luminaires
intended for use in swimming pools, spas, hot tubs and other vessels intended to accommodate
persons, see Luminaires and Forming Shells (WBDT).
This category also covers submersible junction boxes intended for use with submersible luminaires
and other submersible fountain equipment.
Luminaires investigated for operation only while submersed in water are marked “Submerse Before
Lighting,” or with equivalent wording, and such marking is visible after installation of the luminaire.
Submersible luminaires have been investigated for both outdoor and indoor use.
Dry-niche Submersible Luminaire — These luminaires are intended for permanent installation
only in the wall of a fountain unless accompanying installation instructions describe the additional
option of installation in the bottom of the fountain. These luminaires are designed for servicing from the
rear in a passageway behind the fountain wall or, if mounted in the bottom of the fountain, in a tunnel
underneath the fountain. For purposes of installation, maintenance or servicing, the luminaire may
consist of two separable parts. One part includes a factory-installed length of exible cord terminating
in an attachment plug, and the second part includes a receptacle for the attachment plug and a splice
compartment in which the branch circuit conductors are connected.
Wet-niche Submersible Luminaire — These luminaires are intended to be installed only in the
wall of a fountain unless accompanying installation instructions describe the additional option of
installation in the bottom of the fountain. These luminaires are intended for installation in a permanently
installed luminaire housing (forming shell) in which the luminaire will be completely surrounded by
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Swimming Pool Equipment,Spas,
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ARCHITECTURAL AND FLOATING FOUNTAINS (AWEG)
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Marking Guide
water. These luminaires are marked to indicate the proper housings with which they are to be used,
and the luminaire housings are marked to indicate the luminaires with which the housings are to be
used. These luminaires are provided with a factory-installed, permanently attached exible cord with
an exposed length of not less than 12 ft. The exible cord is con ned in the luminaire housing by the
luminaire and permits the luminaire to be removed from the luminaire housing and to be lifted to the
fountain deck for servicing without lowering the water level or disconnecting the luminaire from the
branch circuit conductors. Luminaires with longer cords are available for installations where the junction
box or splice enclosure is so located that a 12 ft long cord will not permit luminaire removal from the
luminaire housing and placement on the deck for servicing. To reduce the risk of product damage, any
cord length in excess of that necessary for servicing should be trimmed from the supply end rather than
stored in the luminaire housing.
Forming Shell (Housing) for Wet-niche Submersible Luminaires — These are structures
designed to support a mating wet-niche luminaire, for mounting in a fountain structure. Forming
shells are designed to require the supply end of the conduit connected to the forming shell to be
directly connected to a Listed swimming pool junction box (see WCEZ. This forming shell-connected
conduit may alternatively be connected directly to other equipment (such as Swimming Pool and Spa
Transformers (WDGV), Ground-fault Circuit Interrupters (KCXS), Panelboards (QEUY), or pool or spa
control equipment) only when such other equipment has been investigated for this use, as indicated
by the marking “Suitable for direct conduit connection to a wet-niche or no-niche luminaire,” or the
equivalent.
No-niche Submersible Luminaire — These luminaires are intended to be installed only on the walls
of a fountain unless accompanying installation instructions describe the additional option of installation
on the bottom of the fountain. These luminaires are mounted to a bracket permanently secured in or on
the wall or bottom with the luminaire completely surrounded by water. These luminaires are provided
with a factory-installed, permanently attached exible cord with an exposed length of not less than 12
ft that is con ned by the luminaire and fountain wall or bottom. The exible cord permits the luminaire
to be removed from the mounting bracket and to be lifted to the fountain deck for servicing without
lowering the water level or disconnecting the luminaire from the branch circuit conductors. Luminaires
with longer cords are available for installations where the junction box or splice enclosure is so located
that a 12 ft long cord will not permit luminaire removal from the mounting bracket and placement on the
deck for servicing. To reduce the risk of product damage, any cord length in excess of that necessary
for servicing should be trimmed from the supply end rather than stored between the luminaire and
fountain wall.
Mounting Brackets for No-niche Submersible Luminaires — These are structures designed to
support a mating no-niche luminaire, for mounting in or on a fountain structure. Mounting brackets are
designed to require the supply end of the conduit connected to the mounting bracket to be directly
connected to a Listed swimming pool junction box (see WCEZ). The information provided above about
alternate supply-end termination of conduit connected to forming shells also applies to supply-end
termination of conduit connected to the mounting brackets of no-niche luminaires.
Special Use Submersible Luminaire — These luminaires are intended to rest directly on the
fountain oor or may be otherwise located in the fountain. The luminaires are provided with a
permanently attached exposed exible cord intended to be routed into a submersible junction box, or
the luminaires have other means for permanent connection to the supply circuit.
ADDITIONAL INFORMATION
For additional information, see Luminaires and Fittings (HYXT) and Electrical Equipment for Use in
Ordinary Locations (AALZ).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 676, “Luminaires and
Submersible Junction Boxes.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and one of the following product names: “Mounting Bracket for NoNiche Luminaire,” “Housing for Wet-Niche Luminaire,” “Wet-Niche Submersible Luminaire,” “Dry Niche
Submersible Luminaire,” “No-Niche Submersible Luminaire,” “Special Use Submersible Luminaire” or
“Submersible Junction Box,” or other appropriate product name as shown in the individual Listings.
Alternatively, the luminaires may be designated “Submersible Luminaire, (Wet-) (Dry-) (No-) Niche
Type,” as appropriate.
USE AND INSTALLATION
This category covers indoor hydromassage bathtubs (also known as whirlpool baths) rated 250 V
or less, for residential and commercial use, for permanent connection to the building plumbing, and
intended for installation and use in accordance with Article 680 of ANSI/NFPA 70, “National Electrical
Code.” They are intended for either permanent connection to the electrical supply or are provided from
the factory with a maximum 3 ft. type SJ or equivalent service cord terminating in a grounding type
attachment plug. A hydromassage bathtub may have provision for a maximum of two supply sources.
A hydromassage bathtub consists of a drainable tub, a recirculating pump and optional equipment
such as lights, a heater, a control and an air blower. A bathtub may also be provided with an air-blower
and no recirculating pump or with an integral shower unit.
This category also covers heaters intended to be installed after a hydromassage bathtub leaves
the factory. These eld-installed heaters are Listed as hydromassage bathtub accessories. They are
provided with markings on the heater and on the heater packaging to indicate the hydromassage
bathtub models with which they are suitable.
Hydromassage bathtubs and hydromassage bathtub accessory heaters are intended to be protected
by a ground-fault circuit interrupter.
Double Insulation — Hydromassage bathtubs may utilize double insulated pumps. These pumps
are marked “Double Insulated” or “Double Insulation.” Double insulated pumps intended for permanent
connection to the supply may or may not have provision to terminate an equipment grounding
conductor. Cord-connected double insulated pumps may be provided with a power supply cord
terminating in a nongrounding type attachment plug. Double insulated pumps are not provided with a
pressure wire connector for equipotential bonding.
The physiological effect of using this equipment has not been determined. The suction ttings used
in these hydromassage bathtubs have been investigated with respect to body and hair entrapment in
accordance with ASME/ANSI A112.19.8M-1987.
INSTRUCTIONS/MARKINGS
Factory Con guration Information — Each hydromassage bathtub is provided with a marking
on the wiring diagram, in the installation instructions or on a separate con guration sheet, to identify
the factory-installed components of the unit. These components include pumps, controls, heaters,
luminaires, and supply cords. This con guration marking and the installation instructions are intended
to be available during installation and inspection.
Field-installed Options — Field-installed options that have been investigated and found to be
suitable for addition to the unit are speci ed in the installation instructions. Hydromassage bathtubs
intended for accessory heaters to be installed in the eld are factory con gured with ttings for this
purpose. These bathtubs are marked “Suitable for Field-Installed Heater Accessory” and “Use only
Accessory Heaters Marked for Use with This Bathtub.”
RELATED PRODUCTS
Portable hydromassage equipment is covered under Personal Hygiene and Health Care Appliances
(QGRZ). This category does not cover hydrotherapy tubs used in health care facilities. For professional
equipment, see Medical and Dental Equipment, Professional (KFBQ) under Health Care Facilities
Equipment (KEVQ). For prefabricated steam baths and showers, see Prefabricated Assemblies,
Sections and Units (QQXX). For sauna and steam bath heating equipment, see Heaters, Sauna and
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HYDROMASSAGE BATHTUBS (NCHX)
PLUMBING ACCESSORIES (QMTX)
This category covers plumbing accessories connected to or used with plumbing in commercial
locations or residential occupancies, including irrigation equipment, sprinkler controls, water controls
located in kitchens and bathrooms, electric faucets, toilet flushing systems, lawn sprinklers and
plumbing controls.
This category also covers rebuilt products that are subjected to the same requirements as new
products. Rebuilt products are identical in construction to new products and can be identified by the
word “REBUILT” as part of the Listing Mark.
The products covered under this category have not been investigated for use in hazardous locations
as defined in the National Electrical Code, NFPA 70.
The products covered in this category have not been investigated with respect to the effect of their
use with corrosive liquids or aqueous solutions containing corrosive materials.
Products suitable for outdoor use and those for use with heated liquids are so marked.
RELATED PRODUCTS
Similar equipment intended for use in hospitals or medical offices in connection with patient treatment
is covered under Medical and Dental Equipment, Professional (KFBQ).
Similar equipment for use with or in proximity to swimming pools or spas is covered under Swimming
Pool and Spa Equipment (WABX).
See Pumping Equipment for Fire Service (QVUT).
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Steam Bath (KPJV). Self-contained spas and hot tubs are covered under Self-contained Spas (WCZW).
For unjetted plastic bathtubs, shower stalls, and the like tested in accordance with the applicable
ANSI Z124 series standards, see Plastic Plumbing Fixtures (QNNP).
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ) and
Plumbing and Associated Products (AAPP).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 1795, “Hydromassage
Bathtubs.”
ADJUNCT SERVICES
Underwriters Laboratories Inc. (UL) provides a service for the Classification of hydromassage
bathtubs that not only meet the appropriate requirements of UL but also have been investigated in
accordance with Standards or parts detailed below. These products are intended for installation and
use in accordance with the applicable model plumbing code.
1. ASME/ANSI A112.19.7M-+, “Requirements for Whirlpool Bathtub Appliances”
2. Water retention test requirement from ASME/ANSI A112.19.7M-+
+ Issue date of standard or latest addendum
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Hydromassage Bathtub” or “Hydromassage
Bathtub Accessory.”
Combination Listing/Classification Mark — A Listing Mark combined with a Classification Mark
is provided on products that have additionally been investigated in accordance with standards or
parts detailed below from the American National Standards Institute (ANSI). The combined Listing/
Classification Mark consists of the Listing Mark elements detailed above and the following marking:
“ALSO CLASSIFIED IN ACCORDANCE WITH *,” where “*” is one of the texts detailed below:
1. ASME/ANSI A112.19.7M-+
2. WATER RETENTION TEST REQUIREMENT FROM ASME/ANSI A112.19.7M-+
+ Issue date of standard or latest addendum
PUMPS, ELECTRICALLY OPERATED, LIQUID (REUZ)
USE
This category covers submersible and nonsubmersible pumps intended for household, commercial
or industrial use, including pumps for fountains, circulation, sewage, ef uent, wells, irrigation, building
sites (contractor type), sumps and general utility.
The liquids for which a pump has been investigated are marked on the unit or are included in the
installation instructions provided with the unit, unless the pump is obviously intended for use with water
only, such as an irrigation pump.
Pumps suitable for outdoor use and those for use with heated water are so marked.
REBUILT PRODUCTS
This category also covers submersible and nonsubmersible pumps that are rebuilt by the
original manufacturer or another party having the necessary facilities, technical knowledge and
manufacturing skills. Rebuilt submersible and nonsubmersible pumps are rebuilt to the extent
necessary by disassembly and reassembly using new or reconditioned parts. Rebuilt submersible and
nonsubmersible pumps are subject to the same requirements as new submersible and nonsubmersible
pumps.
RELATED PRODUCTS
Equipment covered under this category has not been investigated for use in hazardous (classi ed)
locations as de ned in ANSI/NFPA 70, “National Electrical Code.” Reference to the Hazardous
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Devices that have been evaluated for contact with drinking water are Classi ed in accordance with
the requirements of ANSI/NSF 61 and are covered under Drinking Water System Components (FDNP).
Plumbing xture ttings that have been evaluated to ASME A112.18.1M-1996, ASSE 1014, and ASSE
1025 are covered under Plumbing Fixture Fittings (QNSQ).
Pumps are covered under Pumps, Electrically-operated Liquid (REUZ) Pumps (RAOV).
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ) and
Plumbing and Associated Products (AAPP).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 1951, “Electric Plumbing
Accessories.”
Underwriters Laboratories Inc. (UL) also provides a service for the Classi cation of plumbing
accessories that not only meet the appropriate requirements of UL but have also been investigated in
accordance with the following standards:
1. ANSI/ASME A112.19.7, “Requirements for Whirlpool Bathtub Appliances.”
2. Water retention test requirement from ANSI/ASME A112.19.7M.
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Electric Faucet” or “Lawn Sprinkler Control”
or other appropriate product name as shown in the individual Listings. For rebuilt units, the product
name in the Listing Mark is preceded by the word “Rebuilt.”
A Listing Mark combined with a Classi cation Mark is provided on products that have additionally
been investigated in accordance with standards or parts detailed below from standards of the American
National Standards Institute (ANSI). The combined Listing/Classi cation Mark consists of the Listing
Mark elements detailed above along with the following:
“Also Classi ed IN ACCORDANCE WITH *,” where “*” is one of the texts detailed below.
1. ANSI/ASME A112.19.7M-+.
2. WATER RETENTION TEST REQUIREMENT FROM ANSI/ASME A112.19.7M-+.
+Issue date of standard or latest addendum.
WATER TREATMENT EQUIPMENT (WDLC)
This listing covers chlorinators, brominators, ozone generators, ion generators, and similar equipment
intended to sanitize water in pools, spas, and hot tubs. It also includes equipment designed to monitor
water chemistry in pools, spas, and hot tubs, with or without the capability of adding chemicals to the
water to adjust water chemistry. These products are intended for installation in accordance with Article
680 of the National Electrical Code, NFPA 70.
The ability of this equipment to sanitize pool and spa water has not been determined. Equipment
that has been evaluated for sanitation is classi ed in accordance with the requirements of the National
Sanitation Foundation Standard Number 50 and can be located under the category WCNZ “Pool and
Spa Equipment Classi ed in Accordance with NSF Standard Number 50”.
Products listed under this category are acceptable for both indoor and outdoor use, unless marked
otherwise. They are provided with an accessible pressure wire connector for equipotential bonding
during installation.
The basic standards used to investigate products in this category are UL 1081, “Swimming Pool
Pumps, Filters, and Chlorinators”, and UL 1563, “Electric Spas, Equipment Assemblies, and Associated
Equipment”.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and one of the following product names as appropriate: “Swimming
Pool Chlorinator”, “Spa Chlorinator”, “Swimming Pool and Spa Chlorinator”, or other appropriate
product name.
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Locations Equipment Directory should be made for equipment that has been investigated for use in
hazardous (classi ed) locations.
The products covered in this category have not been investigated with regard to the effect of their
use with combustible or ammable liquids, corrosive liquids, or aqueous solutions containing corrosive
materials. Such pumps are covered under Flammable Liquid Pumps (RBQR) and Power-operated
Pumps (RBOG).
Similar equipment intended for use in hospital or medical of ces in connection with patient treatment
is covered under Medical and Dental Equipment, Professional (KFBQ).
These pumps have not been investigated for use with or in proximity to swimming pools or spas.
Such pumps are covered under Swimming Pool and Spa Equipment, Pumps (WCSX).
Pumping equipment for re service is covered under the category of the same title (QVUT).
Pumps covered in this category have not been investigated for contact with drinking water. Pumps
that have been investigated only for contact with drinking water are Classi ed in accordance with the
requirements of ANSI/NSF 61, “Drinking Water System Components - Health Effects” and are covered
under Drinking Water System Components (FDNP).
For evaporative cooler pumps, see Evaporative Cooler Retro t Pumps (AGIS).
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ) and
Plumbing and Associated Products (AAPP).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 778, “Motor-Operated Water
Pumps.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Sump Pump,” “Water Circulating Pump” or
“Sewage Pump,” or other appropriate product name as shown in the individual Listings.
For rebuilt products the word “Rebuilt,” “Remanufactured” or “Reconditioned” precedes the product
name.
USE
This category covers equipment for use with swimming pools, decorative pools, wading pools,
therapeutic pools, and hot tubs and spas in accordance with Article 680 of NFPA 70, “National Electrical
Code” (NEC®).
This category also covers self-contained hot tubs and spas as well as cord-connected portable
appliances for use with aboveground storable swimming pools, hot tubs and spas.
Information concerning the suitability of the equipment for use indoors or outdoors is given in the
General Information Section for each individual category.
RELATED PRODUCTS
Ground fault circuit interrupters intended for use with swimming pool equipment are covered under
Ground Fault Circuit Interrupters (KCXS).
Suction ttings are covered under Swimming Pool and Spa Suction Fittings (WEBS).
Fountains covered by Article 680, Part E, of the NEC® are covered under Architectural and Floating
Fountains (AWEG).
BLOWERS (WAGN)
USE AND INSTALLATION
This category covers equipment intended to introduce pressurized air into spas and hot tubs to create
a hydromassage effect. They are intended for installation in accordance with Article 680 of the National
Electrical Code, NFPA 70.
Products Listed in this category are acceptable for both indoor and outdoor use unless marked
otherwise. They are provided with an accessible pressure wire connector for equipotential bonding
during installation.
To avoid water contacting live electrical parts, these products are to be installed in accordance with
the manufacturer’s instructions and permanently mounted at least 12 inches above the over ow level of
the spa or hot tub.
REQUIREMENTS
The basic standard used to investigate products in this category is UL 1563, “Electric Spas,
Equipment Assemblies, and Associated Equipment.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by
UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for
these products includes the UL symbol (as illustrated in the Introduction of the Directory) together with
the word “LISTED,” a control number, and one of the following product names, as appropriate: “Spa
Blower,” “Hot Tub Blower” or “Spa/Hot Tub Blower.”
CONTROLS (WAWU)
USE
This category covers controllers, timers, temperature-regulating equipment, etc., for control of
equipment intended for use with swimming pools, hot tubs and spas. This category also covers control
panels for use with equipment intended for water-play fountains and water playground areas, swimming
pools and spas, or fountains with water in common with swimming pools.
These products are acceptable for both indoor and outdoor use unless marked “For Indoor Use Only.”
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ) and
Plumbing and Associated Products (AAPP).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 1563, “Electric Spas,
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SWIMMING POOL AND SPA EQUIPMENT (WABX)
Equipment Assemblies, and Associated Equipment.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by
UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for
these products includes the UL symbol (as illustrated in the Introduction of this Directory) together
with the word “LISTED,” a control number, and the product name “Spa Controller” or “Swimming Pool
Controller,” or other appropriate product name as shown in the individual Listings.
LUMINAIRES AND FORMING SHELLS (WBDT)
USE
This category covers luminaires and forming shells for installation in accordance with Article 680 of
ANSI/NFPA 70, “National Electrical Code” (NEC®).
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COVERS FOR SWIMMING POOLS AND SPAS (WBAH)
This category includes covers for use with swimming pools, spas and hot tubs. These covers have
been evaluated in accordance with the American Society for Testing and Materials Standard ASTM
F1346, “Standard Performance Speci cation for Safety Covers and Labeling Requirements for All
Covers for Swimming Pools, Spas and Hot Tubs”.
This category includes manual safety covers and power safety covers, as well as covers of other than
the safety type, as de ned in the ASTM F1346 Standard.
INSTALLATION
The ability of the manual or power safety cover to perform its intended function is dependent upon
proper installation. Therefore, Authorities Having Jurisdiction should be consulted. Installation should be
performed by a quali ed installer using the manufacturer’s instructions.
MANUAL SAFETY COVERS
A manual safety cover is a barrier that is manually placed over the water. It is intended to impede
access to the contained body of water. It is provided with a means for removing signi cant levels of
collected surface water.
POWER SAFETY COVERS
A power safety cover is a barrier that can be placed over the water area and removed with a
motorized mechanism. It is intended to impede access to the contained body of water. It is provided
with a means for removing signi cant levels of collected surface water. A power safety cover includes
an operator that is Listed under Swimming Pool and Spa Cover Operators, Electric (WDDJ).
OTHER COVERS
A cover of other than the safety type, such as an energy conservation or a solar energy cover, is
a cover that has been evaluated in accordance with only the materials, manufacture and labeling
requirements of the ASTM Standard. Covers of this type are not intended to impede access to the
contained body of water. Such covers are marked “This Is Not A Safety Cover.”
The Classi cation Marking of Underwriters Laboratories Inc. (shown below) on the product is the
only method provided by UL to identify products manufactured under its Classi cation and Follow-Up
Service. The Classi cation Marking for these products (shown below) includes the name and/or symbol
of Underwriters Laboratories Inc. (as illustrated in the Introduction of this Directory) together with the
word “CLASSIFIED”, a control number, and one of the following product names as appropriate: “Manual
Safety Cover”, “Power Safety Cover”, or “Pool Cover”.
(Product Identity)
CLASSIFIED BY
UNDERWRITERS LABORATORIES INC.
In Accordance With
ASTM F 1346-(Issue Date)
(control number)
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PRODUCT MARKINGS
Luminaires suitable for use only in fresh water are marked “Fresh Water Only.” Luminaires suitable
for use in either fresh or salt water are marked “Salt Water or Fresh Water.” Luminaires investigated
for operation only in contact with water are marked “CAUTION To reduce the risk of electric shock
submerse before lighting” or the equivalent, and such marking is visible after installation. Additional
markings for speci c types of luminaires are described below.
PRODUCT TYPES AND INSTALLATION
Dry-niche Underwater Luminaires for Swimming Pools and Spas — These luminaires have
been investigated for permanent installation only in the wall of a swimming pool or eld-fabricated spa
unless accompanying installation instructions indicate suitability for installation in the bottom of a pool
or spa. These luminaires have been investigated for installation with the top of the lens not less than
450 mm (18 in.) below the normal water level unless otherwise marked. These luminaires are designed
for servicing from the rear in a passageway behind the pool or spa wall or, if mounted in the bottom of
a pool or spa, in a tunnel underneath the pool or spa. The luminaire may include (1) a factory-installed
length of exible cord terminating in an attachment plug and (2) an attachment plug receptacle for
connection of the branch circuit conductors.
Wet-niche Underwater Luminaires for Swimming Pools and Spas — These luminaires, with
the mating forming shell (luminaire housing), have been investigated for installation only in the wall
of a swimming pool or eld-fabricated spa unless accompanying installation instructions indicate
suitability for installation in the bottom of a pool or spa. These luminaires have been investigated for
installation with the top of the lens not less than 450 mm (18 in.) below the normal water level unless
otherwise marked. These luminaires have been investigated for installation in a permanently installed
forming shell (luminaire housing) in which the luminaire will be completely surrounded by water. These
luminaires are marked to indicate the proper forming shells with which they have been investigated
for use. Mismatching a wet-niche luminaire and forming shell can increase the risk of electric shock or
injury to users. These luminaires are provided with a factory installed, permanently attached exible
cord with an exposed length of not less than 3.6 m (12 ft). The exible cord is con ned in the forming
shell by the luminaire and permits the luminaire to be removed from the forming shell and to be lifted
to the pool or spa deck for servicing without lowering the water level or disconnecting the luminaire
from the branch circuit conductors. Luminaires with longer cords are available for installations where
the junction box or splice enclosure is so located that a 3.6 m (12 ft) long cord will not permit luminaire
removal from the forming shell and placement on the deck for servicing. To reduce the risk of product
damage, any cord length in excess of that necessary for servicing should be trimmed from the supply
end rather than stored in the forming shell.
Forming Shell (Housing) for Wet-niche Underwater Luminaires for Swimming Pools and
Spas — These are structures designed to support a mating wet-niche luminaire, for mounting in a
pool structure. Forming shells are marked to indicate the luminaires with which the forming shells
have been investigated for use. Mismatching a wet-niche luminaire and forming shell can increase the
risk of electric shock or injury to users. Forming shells are designed to require the supply end of the
conduit connected to the forming shell to be directly connected to a Listed swimming pool junction box
(see WCEZ). This forming shell-connected conduit may alternatively be connected directly to other
equipment (such as Swimming Pool and Spa Transformers (WDGV), Ground-Fault Circuit Interrupters
(KCXS), Panelboards (QEUY), or pool or spa control equipment) only when such other equipment has
been investigated for this use, as indicated by the marking “Suitable for direct conduit connection to a
wet-niche or no-niche luminaire, “ or the equivalent.
No-niche Underwater Luminaires for Swimming Pools and Spas — These luminaires have
been investigated for installation only on the walls of a swimming pool or eld-fabricated spa unless
accompanying installation instructions indicate suitability for installation in the bottom of a pool or
spa. These luminaires have been investigated for installation with the top of the lens not less than
450 mm (18 in.) below the normal water level unless otherwise marked. These luminaires have been
investigated for mounting to a bracket permanently secured in or on the pool or spa wall or bottom
where the luminaire will be completely surrounded by water. These luminaires are provided with a
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factory installed, permanently attached exible cord with an exposed length of not less than 3.6 m (12
ft). The exible cord is con ned by the luminaire and pool wall or bottom and permits the luminaire to
be removed from the mounting bracket and to be lifted to the pool or spa deck for servicing without
lowering the water level or disconnecting the luminaire from the branch circuit conductors. The
information provided above for wet-niche luminaires regarding the availability of luminaires with longer
exible cords and the need to trim excess cord from the supply end also applies to no-niche luminaires.
Mounting Brackets for No-niche Underwater Luminaires for Swimming Pools and Spas —
These are structures designed to support a mating no-niche luminaire, for mounting in or on a pool
structure. Mounting brackets are marked to indicate the luminaires with which the mounting brackets
have been investigated for use. Mismatching a no-niche luminaire and mounting bracket can increase
the risk of electric shock or injury to users. Mounting brackets are designed to require the supply end
of the conduit connected to the mounting bracket to be directly connected to a Listed swimming pool
junction box (see WCEZ). The information provided above about alternate supply-end termination of
conduit connected to forming shells also applies for supply-end termination of conduit connected to the
mounting brackets of no-niche luminaires.
Underwater Luminaires for Aboveground Storable Swimming Pools — These luminaires are
a type of through-wall lighting assembly as described in Article 680 of the NEC®. They have been
investigated for use with an aboveground storable pool (a pool that is constructed on or above
the ground and is capable of holding water to a maximum depth of 1.0 m (42 in.), or a pool with
nonmetallic, molded polymeric walls regardless of dimension). They include all three of the following
factory-provided parts:
1. Lamp assembly for temporary installation on or through the wall of an aboveground pool
2. Transformer or ground-fault circuit interrupter assembly provided with a 0.9 m - 1.8 m (3 - 6 ft)
power supply cord for connection to a source of supply and for temporary mounting away from
the pool (the remote assembly)
3. Jacketed exible cord of not less than 7.6 m (25 ft) in length connecting the lamp assembly
and the remote assembly
These luminaires have been investigated for installation with the top of the lens not less than 200 mm
(8 in.) below the top of the pool. A hole through the pool wall may be required for luminaire installation.
Unless otherwise indicated in the luminaire’s installation instructions, the luminaire design has been
investigated for the lower edge of any hole that a luminaire installer must cut in the pool wall to be no
more than 360 mm (14 in.) below the top of the pool wall. The pool wall manufacturer may provide, at
a greater depth, a properly sized hole or a reinforced wall section designed for eld-cutting a properly
sized hole for a luminaire or plumbing tting. Unless otherwise marked for a maximum installation
depth, these luminaires have been investigated for installation in such a hole at a greater depth where
the pool installation instructions provide for the hole placement and usage.
Underwater Luminaires for Aboveground Nonstorable Swimming Pools — These luminaires
are a type of through-wall lighting assembly as described in Article 680 of the NEC®. They have been
investigated for permanent installation through or on the wall of an aboveground nonstorable pool.
The information provided above for underwater luminaires for aboveground storable swimming pools
regarding installation depth and using an existing hole or cutting a new hole for installation also applies
to underwater luminaires for aboveground nonstorable swimming pools.
Convertible Underwater Luminaires for Aboveground Swimming Pools — These luminaires
are initially con gured as an underwater luminaire for aboveground storable swimming pool for use
as described above. They include provisions for the one-time eld conversion of the luminaire to an
underwater luminaire for aboveground nonstorable swimming pool for use as described above. Once
converted, these luminaires are not suitable for being modi ed back to their original con guration.
Fiber Optic Luminaires for Swimming Pools and Spas — These luminaires consist of a lamp/
electrical enclosure that has been investigated for permanent mounting not less than 1.5 m (5 ft) from
the pool or spa wall and a ber optic element and associated ttings to transmit the light to the pool or
spa. The lamp/electrical enclosure has been investigated for installation above the level at which water
splashed from the pool or spa or from another source may collect.
HEATERS (WBRR)
This listing covers heaters intended for permanent installation in or adjacent to swimming pools or
spas. Heaters for hydromassage bathtubs are covered as part of the hydromassage bathtub Listing.
Products listed under this category have not been evaluated for outdoor use, unless they are marked
“For Outdoor Use” or equivalent, in which case they have been found acceptable for both outdoor and
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SUPPLY CIRCUIT CURRENT RATING
An underwater luminaire for aboveground storable swimming pools has been investigated for
connection to the branch circuit speci ed in the NEC® for receptacles having a blade con guration
corresponding to the blade con guration of the luminaire attachment plug. For all other luminaires,
unless marked to identify a permitted greater or required lower maximum supply circuit current rating,
a luminaire with a voltage and current rating shown in the table below has been investigated for
installation on a supply circuit rated not more than as speci ed in the table. A luminaire with a voltage
or current rating not covered by the table is marked to identify the maximum supply circuit current rating
for its installation.
Maximum Current Rating for Supply Circuit
(Except as Speci ed in Preceding Paragraph)
Luminaire Voltage Rating
Luminaire CurrentRating
Max Current
Rating forLuminaire Supply Circuit
15 V ac or less
25 A or less
25 A
110 V ac - 120 V ac 16 A or less
20 A
110 V ac - 120 V ac More than 16 A, not more than 24 A
30 A
RELATED PRODUCTS
See Submersible Luminaires (IFEV) for underwater luminaires intended for use in fountains and
similar water-containing vessels not intended to accommodate the complete or partial immersion of
persons.
See Junction Boxes (WCEZ) for junction boxes intended for use with wet-niche luminaires and their
forming shells. See Swimming Pool and Spa Transformers (WDGV) for transformers for use to supply
swimming pool and spa luminaires. See Potting Compounds (WCRY) for compounds for the user to
encapsulate grounding and bonding conductor splices in swimming pool, spa or fountain equipment,
including luminaires, forming shells and junction boxes.
ADDITIONAL INFORMATION
For additional information, see Swimming Pool and Spa Equipment (WABX) and Electrical Equipment
for Use in Ordinary Locations (AALZ).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 676, “Underwater Luminaires
and Submersible Junction Boxes.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and one of the following product names as appropriate:
“Dry-niche Underwater Luminaire for Swimming Pool”
“Wet-niche Underwater Luminaire for Swimming Pool”
“Forming Shell (or Housing) for Wet-niche Luminaire”
“No-niche Underwater Luminaire for Swimming Pool”
“Mounting Bracket for No-niche Luminaire”
“Underwater Luminaire for Aboveground Storable Swimming Pool”
“Underwater Luminaire for Aboveground Nonstorable Swimming Pool”
“Convertible Underwater Luminaire for Aboveground Swimming Pool”
“Fiber Optic Luminaire for Swimming Pool”
indoor use.
The basic standard used to investigate products in this category is UL 1261, “Electric Water Heaters
for Pools and Tubs”.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Swimming Pool Heater”, “Spa Heater”.
HOT TUB AND SPA EQUIPMENT ASSEMBLIES (WBYQ)
This listing covers Equipment Assemblies for use with non self-contained Spas and Hot Tubs, rated
250 volts or less, for household or commercial use; indoors, outdoors or both.
Equipment Assemblies may be cord and plug-connected, convertible, or permanently wired. A
convertible Equipment Assembly is shipped from the factory with a power supply cord but is designed
for eld-conversion to a permanently wired con guration, for 120 volt, 240 volt or either rating. Once a
convertible Equipment Assembly is converted to permanently wired, it is not intended to be returned to
a cord connected con guration.
Equipment Assemblies are prepackaged combinations of various components such as pumps, lters,
heaters, blowers, lights, and controls and are designed for use with eld supplied tubs. Equipment
Assemblies are designed for installation and use in accordance with Article 680 of the National
Electrical Code. Also Equipment Assemblies must be installed at least 5 feet from the inside walls of a
Spa or Hot Tub and be connected by non-metallic pipe only.
Equipment Assemblies have not been evaluated for below grade installation.
Equipment Assemblies have not been evaluated for use within an outer enclosure or under the skirt of
a Spa or Hot Tub, unless so marked.
35 heater have not been evaluated for indoor use,
Equipment Assemblies that contain a gas- red water
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
HEAT PUMPS (WBVE)
This listing covers products intended to heat swimming pool water, utilizing the heat of rejection from
a mechanical refrigeration system, and optional accessories for these products. This equipment is
rated 600 v or less and is intended for permanent installation at or near swimming pools and spas in
accordance with Article 680 of the National Electrical Code.
These products are designed to restrict the outlet water temperature to a maximum of 50qC (122qF)
under normal operating conditions and to a maximum of 70qC (158qF) under abnormal conditions.
Products listed under this category have not been evaluated for outdoor use, unless they are marked
“For Outdoor Use” or equivalent, in which case they have been found suitable for both outdoor and
indoor use.
In heat pumps employing two or more motors operating from a single supply circuit the motor
overload protective devices (including thermal protection for motors) and other factory-installed motor
circuit components and wiring are investigated on the basis of compliance with the motor branch-circuit
short-circuit and ground-fault protection requirements of Sec. 430-53(c) of the National Electrical Code.
Such multimotor equipment is to be connected only to a circuit protected by fuses or a circuit breaker
with a rating which does not exceed the value marked on the data plate. This marked protective device
rating is the maximum for which the equipment has been investigated and found acceptable. Where the
marking speci es fuses, or “HACR TYPE” circuit breakers, the circuit is to be protected only by the type
of protective device speci ed.
The basic standards used to investigate products in this category are UL 1261, “Electric Water
Heaters for Pools and Tubs”, and UL 1995, “Heating and Cooling Units”.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Swimming Pool Heat Pump”, “Spa Heat
Pump”, “Swimming Pool and Spa Heat Pump”.
for use within an outer enclosure, or for use under the skirt of a Spa or Hot Tub, unless so marked.
This listing also covers Equipment Assemblies which do not contain a water heater and do not
contain a water temperature regulating control or a water temperature limiting control. A water heater,
a temperature regulating control and a temperature limiting control should be provided in the nal
installation and their adequacy determined by the local inspection authority.
The basic standard used to investigate products in this category is UL 1563, “Electric Spas,
Equipment Assemblies, and Associated Equipment”.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and one of the following product names as appropriate: “Equipment
Assembly For Spa/Hot Tub”, “Hot Tub Equipment Assembly” or “Spa Equipment Assembly”.
OIL-FIRED SWIMMING POOL AND SPA HEATERS (LSHW)
USE
This category covers oil- red appliances intended for indoor or outdoor use for heating nonpotable water stored at atmospheric pressure, such as water in swimming pools, spas, hot tubs and
similar applications.
INSTALLATION
These heaters are intended to be installed in accordance with the markings on the appliance
and in the installation instructions provided with the appliance, including (as applicable) markings
and instructions pertaining to clearances, closet installation, types of adjacent surfaces and proper
vent installation, and the following as applicable: the current edition of NFPA 31, “Standard for the
Installation of Oil-Burning Equipment,” the current edition of ANSI/NFPA 70, “National Electrical
Code” (including Article 680), local codes.
RELATED PRODUCTS
See Gas- red Swimming Pool and Spa Heaters (LSEV).
ADDITIONAL INFORMATION
For additional information, see Heating Appliances (KTCR) and Heating, Cooling, Ventilating and
Cooking Equipment (AAHC).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 726, “Oil-Fired Boiler
Assemblies.”
In addition, oil- red spa heaters are investigated to UL 1563, “Electric Spas, Equipment
Assemblies, and Associated Equipment.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by
UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for
these products includes the UL symbol (as illustrated in the Introduction of this Directory) together
with the word “LISTED,” a control number, and the product name “Oil- red Swimming Pool Heater”
or “Oil- red Spa Heater.”
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Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
JUNCTION BOXES (WCEZ)
This listing covers junction boxes intended for use with underwater pool lights.
Products listed under this category have been found acceptable for both outdoor and indoor use.
The basic standard used to investigate products in this category is UL 1241, “Junction Boxes for
Swimming Pool Lighting Fixtures”.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Swimming Pool Junction Box”.
USE AND INSTALLATION
This category covers ozone generators rated 600 V or less and intended for use in the treatment of
nonpotable water in swimming pools, and in spas and hot tubs of other than the self-contained type.
These products have been found suitable for use in wet and damp locations as well as dry locations
unless marked “For Use in Dry Locations Only.”
These products have been investigated with respect to risk of electric shock, fire and mechanical
injury only.
Ozone generators involve features of installation and use not ordinarily present in electrical utilization
equipment. Such features are covered in the manufacturer’s installation instructions. The installation is
intended to be in accordance with the manufacturer’s instructions furnished with the equipment and the
requirements of the Authorities Having Jurisdiction.
Maximum ozone threshold limit recommendations are set by the American Conference of
Governmental Industrial Hygienists as found in 21CFR801.415, “Maximum Acceptable Level of Ozone.”
Compliance with the applicable regulations under conditions of normal and abnormal operation has not
been investigated.
ADDITIONAL INFORMATION
For additional information, see Swimming Pool and Spa Equipment (WABX), Electrical Equipment for
Use in Ordinary Locations (AALZ) and Plumbing and Associated Products (AAPP).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 1563, “Electric Spas,
Equipment Assemblies and Associated Equipment.”
UL MARK
The Classification Mark of Underwriters Laboratories Inc. on the product is the only method
provided by UL to identify products manufactured under its Classification and Follow-Up Service. The
Classification Mark for these products includes the UL symbol, the word “CLASSIFIED” above the UL
symbol (as illustrated in the Introduction of this Directory), and the following additional information:
OZONE GENERATOR
WITH RESPECT TO RISK OF ELECTRIC SHOCK,
FIRE AND MECHANICAL INJURY ONLY
Control No.
Pool and Spa Equipment Classified in Accordance with NSF Standard Number 50 (WCNZ)
This category covers pool and spa equipment evaluated in accordance with the National Sanitation
Foundation (NSF) Standard No. 50, “Circulation System Components for Swimming Pools, Spas, or
Hot Tubs.”
These products include filters, centrifugal pumps, surface skimmers, ozone generators, chemical
feeding equipment, chlorinators and other units installed in water circulation and filtration systems of
pools, spas, and hot tubs. Some products Classified under this category may also be Listed under the
categories of Water Treatment Equipment (WDLC), Miscellaneous, Swimming Pool and Spa Equipment
(WDUT) or Pumps (WCSX).
The Classification Marking of Underwriters Laboratories Inc. (shown below) on the product is the
only method provided by UL to identify products manufactured under its Classification and Follow-Up
Service. The Classification Mark for these products includes the name and/or symbol of Underwriters
Laboratories Inc. together with the word “CLASSIFIED”, a control number, and one of the following
product names as appropriate: “Swimming Pool Filter”, “Ozone Generator”, “Spa Chlorinator”, or other
appropriate product name.
(Product Identity)
CLASSIFIED BY
UNDERWRITERS LABORATORIES INC.
In Accordance With
NSF Standard No. 50 — (Issue Date)
(Control Number)
37
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
OZONE GENERATORS (WCKA)
For those products which are also Listed or Classified by Underwriters Laboratories Inc. under
another category, the marking includes the appropriate Listing Mark or Classification Marking and the
statement “Also Classified by Underwriters Laboratories Inc. in accordance with NSF Standard No. 50
— (Issue Date)”.
PUMPS (WCSX)
This listing covers pumps for circulating the water in swimming pools, hot tubs and spas. These
products are intended for installation in accordance with Article 680 of the National Electrical Code,
NFPA 70.
Products listed under this category are acceptable for both outdoor and indoor use, unless marked
otherwise and have been investigated for use with either permanently installed pools or storable pools.
Pumps investigated for permanently installed pools are so identified and are additionally marked
“Do Not Use With Storable Pools”. Permanently installed pool pumps are intended to be permanently
connected to the water circulation system and they may be permanently wired or provided with a 3 ft
nondetachable power supply cord terminating in a grounding type attachment plug. The attachment
plug may be of the locking or nonlocking type. Units provided with locking type attachment plugs are
intended to be installed at least 5 ft from the inside walls of the pool and are marked accordingly. Units
provided with a nonlocking type attachment plug are intended to be installed at least 10 ft from inside
walls of the pool and are marked accordingly. Permanently installed pool pumps are provided with an
accessible pressure wire connector for equipotential bonding.
Pumps investigated for storable pools are so identified and are additionally marked “Do Not Use With
Permanently Installed Pools”. Storable pool pumps are intended to be connected to a water circulation
system constructed so that the pump may be readily disassembled from the system for storage
and future reassembly to its original integrity. Storable pool pumps are provided with a minimum 25
ft non detachable power supply cord terminating in a grounding type attachment plug, are double
insulated, have no accessible grounded metal parts, have inaccessible non current-carrying metal parts
connected to the grounding conductor of the supply cord and do not have an equipotential bonding
connector.
These pumps may be provided with integral filters. The suitability of the filters to clean water has not
38
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
POTTING COMPOUNDS (WCRY)
This category covers compounds intended to be used to encapsulate grounding and bonding
conductor splices or terminations in swimming pool, spa or fountain equipment such as fixtures, fixture
housings, and junction boxes where the splices or terminations may be exposed to salt-free swimming
pool or fountain water and sunlight for varying lengths of time, including continuous exposure. This
category also covers potting compounds used to fill underwater junction boxes.
These compounds have been evaluated by Underwriters Laboratories Inc. for their resistance to the
deteriorating effects of salt-free swimming pool and fountain water and ultraviolet light. They have also
been evaluated for their ability to adhere to typical metals such as copper alloy, stainless steel and to
plastic. The container or package is marked to identify the materials to which the compound has been
determined to suitably adhere.
The basic requirements used to investigate products in this category are “Outline of Investigation For
Potting Compounds For Swimming Pool, Fountain and Spa Equipment”, Subject 676A.
The Listing Mark of Underwriters Laboratories Inc. on the smallest unit container in which the
product is packaged is the only method provided by Underwriters Laboratories Inc. to identify products
produced under its Listing and Follow-Up Service. The Listing Mark for these products includes the
symbol of Underwriters Laboratories Inc. (as illustrated in the Introduction of this Directory) together
with the word “LISTED”, a control number and the following product name: “Swimming Pool, Fountain
and Spa Equipment Conductor Splice Potting Compound” (any of the locations maybe omitted).
RESIDENTIAL WATER HAZARD ENTRANCE ALARMS (UDGJ)
USE
This category covers products intended to be installed on gates, doors or access barriers
surrounding residential swimming pools, spas or hot tubs for the purpose of sounding an audible
alarm due to unauthorized entry into these areas. This category covers individual products such as
door contacts, sensors, and control units as well as complete systems as indicated in the individual
Listings.
Alarm systems will produce a continuous audible alarm signal for 30 s or longer whenever
entrance through the access barrier occurs. The audible alarm will have a minimum sound level
pressure of 85 dba at 10 ft and will be distinctive from other household sounds such as smoke
detectors, telephones and doorbells. The system will be self restoring, not requiring manual
resetting. Means to manually deactivate the system temporarily for not more than 15 s will be
provided to allow authorized entrance through the access barrier.
This category does not cover swimming pool, spa or hot tub barriers or access doors or gates,
ood or water over ow alarms, sump pump alarms or alarms indicating the use of the facility by
persons already within the barrier.
For additional information, see Signal Appliances (UCEV) and Electrical Equipment for Use in
Ordinary Locations (AALZ).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 2017, “General-Purpose
Signaling Devices and Systems.”
UL MARK
The Listing Mark of Underwriters Laboratories on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for
these products includes the UL symbol (as illustrated in the Introduction of this Directory) together
with the word “LISTED,” a control number, and the product name “Residential Water Hazard
Entrance Alarm Equipment.”
SELF-CONTAINED SPAS (WCZW)
This listing covers self-contained Spas for aboveground use, for household or commercial use, and
for both indoor and outdoor use, unless marked otherwise. These spas are not designed or intended to
have the water drained after each use. They are intended for installation in accordance with Article 680
of the National Electrical Code, NFPA 70.
A self-contained spa is a continuous duty appliance in which all control, water-heating and water39
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
been determined. Filters that have been evaluated in accordance with requirements of the National
Sanitary Foundation (NSF) Standard No. 50 are contained in the product category “Pool and Spa
Equipment Classi ed In Accordance With NSF Standard No. 50” (WCNZ).
The basic standard used to investigate products in this category is UL 1081, “Swimming Pool Pumps,
Filters and Chlorinators”.
This Listing also covers pumps which are rebuilt using new or reconditioned parts by the original
manufacturer or another party having the necessary facilities, technical knowledge, and manufacturing
skills. Rebuilt pumps are subjected to the same requirements as new pumps.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and one of the following product names as appropriate: “Swimming
Pool Pump”, “Spa Pump”, “Swimming Pool or Spa Pump”, or other appropriate product name. For
rebuilt products, the product name includes the word “Rebuilt”, “Remanufactured”, or “Reconditioned”
as part of the Listing Mark.
SWIMMING POOL AND SPA COVER OPERATORS, ELECTRIC (WDDJ)
This Listing covers electrically driven cover operators for use with swimming pools and spas
together with controls for use with such operators. The cover operators generally consist of a motor
driven apparatus used to move the covering material. These operators are intended to be installed in
accordance with Article 680 of the National Electrical Code. Products Listed under this category have
been found suitable for both indoor and outdoor use.
The basic standards used to evaluate the operators are UL 1081, “Swimming Pool Pumps, Filters,
and Chlorinators”, and UL 1563, “Electric Spas, Equipment Assemblies, and Associated Equipment”.
Some products Listed under this category may incorporate pool covers that may be Classi ed under
the category “Covers For Swimming Pools and Spas” (WBAH). Unless Classi ed as a power safety
cover under the category of “Covers For Swimming Pools and Spas” (WBAH), a cover provided with
the operator has not been evaluated as a safety cover.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by
UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for
these products includes the name and/or symbol of Underwriters Laboratories Inc. (as illustrated in
the Introduction of this Directory) together with the word “LISTED”, a control number, and one of the
following product names as appropriate: “Swimming Pool Cover Operator,” “Spa Cover Operator,” or
“Pool Cover Operator”.
40
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
circulating equipment is an integral part of the product, located entirely under the spa skirt.
Self-contained spas may be cord connected, convertible, or permanently wired. A convertible
spa is shipped from the factory with a power supply cord but is designed for eld-conversion to a
permanently wired con guration, either 120 volt, 240 volt, or both. Once a convertible spa is converted
to permanently wired, it is not intended to be returned to a cord connected con guration.
Self-contained spas may be provided with electric or gas heaters. Spas with gas heaters are intended
for permanent wiring and permanent installation, and are intended for outdoor use only.
Each spa is provided with a marking on the wiring diagram in the eld wiring compartment or in the
installation instructions or on a separate con guration sheet, to identify the major components of the
spa when manufactured. The con guration sheet and the installation instructions are intended to be
available during installation and inspection.
Self-contained spas may be shipped completely assembled or in knockdown form.
Knockdown spas are packaged by major component in multiple cartons to aid in shipping. They
consist of a completely assembled and plumbed tub and an equipment package. The skirt may be
attached to the tub or it may be provided in prefabricated sections for assembly in the eld. The
equipment package is completely assembled, pre-wired, and plumbed. Connections are made by
union ttings or similar quick-disconnect plumbing which does not require tools or special materials. All
cartons used to ship a knockdown spa are marked to indicate the contents, the spa model, and the total
number of required cartons.
Hydromassage bathtubs are listed under Hydromassage Bathtubs (NCHX); hydrotherapy equipment
for professional treatment of athletes or patients is listed under Medical and Dental Equipment,
Professional (KFBQ) — both categories are located in the Electrical Appliance and Utilization
Equipment Directory. Factory made assemblies of pumps, heaters, blowers, lights and controls for
use with eld supplied hot tubs and spas are Listed under Hot Tub and Spa Equipment Assemblies
(WBYQ).
The basic standard used to investigate products in this category is UL 1563, “Electric Spas,
Equipment Assemblies, and Associated Equipment”.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Self Contained Spa”.
USE
This category covers swimming pool and spa transformers of the isolated two-winding type having a
grounded metal barrier between the primary and secondary windings, and intended to supply swimming
pool, spa or submersible (fountain) luminaires in accordance with Article 680 of ANSI/NFPA 70,
“National Electrical Code.” The primary rating is 120 V and the maximum secondary ratings are 15 V
rms and 1 kVA. The transformers are provided with integral overload protection.
These products are provided with a power supply cord or have provisions for conduit connection to
the branch circuit supply. Transformers not provided with a power supply cord are provided with leads
or with studs or terminal pads to which Listed pressure wire connectors can be factory or eld installed
to accommodate eld wiring. Wire binding screws or studs with cupped washers should be used for
copper wire 10 AWG max.
Transformers provided with a power supply cord are intended for supplying low-voltage submersible
(fountain) luminaires as indicated by marking on the transformer. They are not intended for use with a
swimming pool or spa luminaires.
Unless marked otherwise, these transformers are not suitable for connection to a conduit which
extends directly to a wet-niche or no-niche luminaire.
These products have not been investigated for outdoor use, unless they are marked “For Outdoor
Use” or equivalent, in which case they have been found acceptable for both outdoor and indoor use.
ADDITIONAL INFORMATION
For additional information, see Swimming Pool and Spa Equipment (WABX), Electrical Equipment for
Use in Ordinary Locations (AALZ) and Plumbing and Associated Products (AAPP).
REQUIREMENTS
The basic requirements used to investigate products in this category are contained in UL Subject 379,
“Outline of Investigation for Transformers for Fountain, Swimming Pool, and Spa Luminaires.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and one of the following product names: “Fountain Transformer,”
“Swimming Pool Transformer,” “Spa Transformer” or “Fountain, Swimming Pool or Spa Transformer.”
SWIMMING POOL AND SPA EQUIPMENT, MISCELLANEOUS (WDUT)
GENERAL
This category covers accessory equipment for swimming pools, hot tubs and spas, such as valves
and pool cover operators.
Unless marked otherwise, these products are acceptable for both indoor and outdoor use.
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ).
REQUIREMENTS
The basic standards used to investigate products in this category are UL 1563, “Electric Spas,
Equipment Assemblies, and Associated Equipment” and UL 1081, “Swimming Pool Pumps, Filters and
Chlorinators.”
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL
to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the
word “LISTED,” a control number, and the product name “Pool Cover Operator,” “Pool Valve Actuator,”
“Pool Freeze Protector” or other appropriate product name as shown in the individual Listings.
41
Swimming Pool Equipment,Spas,
Fountains and Hydromassage Bathtubs
Marking Guide
SWIMMING POOL AND SPA TRANSFORMERS (WDGV)
SUCTION FITTINGS FOR SWIMMING POOLS AND SPAS (WEBS)
General — This category covers suction fittings for use in swimming pool, wading pool, spa, hot tub,
and hydromassage (whirlpool) bathtub installations.
Ratings — Each suction fitting is marked with a water flow rate in gals per minute. This rate should
equal or exceed the maximum flow rate of the pump(s) used in the water circulating system.
Suction fittings have been evaluated for both indoor and outdoor use unless otherwise marked for
indoor use only. They should be installed following the instructions that are packaged with each fitting.
Standard — The basic standard used to investigate products in this category is ASME/ANSI
A112.19.8M-1987, “Suction Fittings for use in Swimming Pools, Wading Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Appliances”.
Listing Mark — The Listing Mark of Underwriters Laboratories Inc. on the product is the only method
provided by UL to identify products manufactured under its Listing and Follow-Up Service. The Listing
Mark for these products includes the name and/or symbol of Underwriters Laboratories Inc. (as
illustrated in the Introduction of this Directory) together with the word “LISTED”, a control number, and
the following product name: “Suction Fitting”.
333 Pfingsten Road
Northbrook, IL 60062
(847) 272–8800
Fax: (847) 272–8129
455 E. Trimble Rd.
San Jose, CA 95131-1230
(408) 754-6500
Fax: (408) 689-6500
1285 Walt Whitman Road
Melville, NY 11747
(631) 271–6200
Fax: (631) 271–8259
12 Laboratory Drive
Research Triangle Park, NC 27709
(919) 549–1400
Fax: (919) 547–1842
2600 N.W. Lake Road
Camas, WA 98607
(360) 817-5500
Fax: (360) 817-6000
42