CHAPTER ONE
• ARTICLE 1.0 – DEFINITIONS
Scope - This article contains only those
definitions essential to the proper
application of this Code. It is not
intended to include commonly defined
general terms or commonly defined
technical terms from related codes and
standards.
1.0.1 General
Air Terminal (for lightning protection) - A combination of
elevation rod and brace, or footing placed on upper portions of
structure, together with tip or point if used.
Ampacity - The current, in amperes, that a conductor can carry
continuously under the conditions of use without exceeding its
temperature rating.
Appliance - Utilization equipment, generally other than
industrial, normally built in standardized sizes or types, that is
installed or connected as a unit to perform one or more functions
such as clothes washing, air conditioning, food mixing, deep
frying, etc.
Appliance (Portable) - An appliance which can easily be moved
from one place to another in normal use.
Appliance Branch Circuit
Armor - A wrapping of galvanized interlocking steel strip
forming an integral part of the assembly or certain insulated
cables, wires, or cords, which are capable of withstanding certain
mechanical tests.
Armored Cable - A cable provided with a wrapping or metal
usually steel wires or tapes, primarily for the purpose of
mechanical protection.
Armored Cable (in interior wiring) - A fabricated assembly of
insulated conductors and a flexible metallic covering.
Arrester (Surge) - A protective device for limiting surge voltage
on equipment by discharging or bypassing surge current; it
prevents continued flow of follow current to ground and is
capable of repeating these functions as specified.
Attachment Plug (Plug Cap) - A device that, by insertion in a
receptacle, establishes a connection between the conductors of
the attached flexible cord and the conductors connected
permanently to the receptacle.
Auxiliary Gutter - A sheet-metal enclosure for conductors,
cables and bus bars at switchboards, meter centers, distribution
centers and similar points.
Bare Conductor
Bonding (Bonded) - The permanent joining of metallic parts to
form an electrically conductive path that will ensure electrical
continuity and the capacity to conduct safely any current likely to
be imposed.
Bonding Jumper - A reliable conductor to ensure the required
electrical conductivity between metal parts required to be
electrically connected.
Bonding Jumper (Main) - The connection between the
grounded circuit conductor and the equipment grounding
conductor at the service.
Branch Circuit - The circuit conductors between the final over
current device protecting the circuit and the outlet(s).
Branch Circuit (Appliance) - A branch circuit that supplies
energy to one or more outlets to which appliances are to be
connected, and that has no permanently connected lighting
fixtures that are not a part of an appliance.
Branch Circuit (General Purpose) - A branch circuit that
supplies a number of outlets for lighting and appliances.
Branch Circuit (Multiwire) - A branch circuit that consists of
two or more ungrounded conductors that have a potential
difference between them, and a grounded conductor that has
equal potential difference between it and each ungrounded
conductor of the circuit and that is connected to the neutral or
grounded conductor of the system.
Bus - A conductor, a group of conductors, in switchgear
assemblies which serves as a common connection for two or
more circuits.
Circuit Breaker - A device designed to open and close a circuit
by nonautomatic means and to open the circuit automatically on a
predetermined overcurrent without damage to itself when
properly applied within its rating.
Adjustable (as applied to circuit breakers)
• A qualifying term indicating that the circuit breaker can be set
to trip at various values of current, time, or both, within a
predetermined range
Instantaneous Trip (as applied to circuit breakers)
• A qualifying term indicating that no delay is purposely
introduced in the tripping action of the circuit breaker.
Inverse Time (as applied to circuit breakers)
• A qualifying term indicating that there is purposely introduced
a delay in the tripping action of the circuit breaker, which
delay decreases as the magnitude of the current increases.
Nonadjustable (as applied to circuit breakers)
• A qualifying term indicating that the circuit breaker does not
have any adjustment to alter the value of current at which it
will trip or the time required for its operation.
Conductor
Bare. A conductor having no covering or electrical insulation
whatsoever.
Covered. A conductor encased within material of composition or
thickness that is not recognized by this Code as electrical
insulation.
Insulated. A conductor encased within material of composition
and thickness that is recognized by this Code as electrical
insulation.
Conduit Body - A separate portion of a conduit or tubing system
that provides access through a removable cover(s) to the interior
of the system at a junction of two or more sections of the system
or
at
a
terminal
point
of
the
system.
Boxes such as FS and FD or larger cast or sheet metal boxes are
not classified as conduit bodies.
Connector, Pressure (Solderless) - A device that establishes a
connection between two or more conductors or between one or
more conductors and a terminal by means of mechanical pressure
and without the use of solder.
Controller - A device or group of devices that serves to govern,
in some predetermined manner, the electric power delivered to
the apparatus to which it is connected.
Copper-Clad Aluminum Conductors - Conductors drawn from
a copper-clad aluminum rod with the copper metallurgically
bonded to an aluminum core. The copper forms a minimum of 10
percent of the cross-sectional area of a solid conductor or each
strand of a stranded conductor.
Cutout Box - An enclosure designed for surface mounting that
has swinging doors or covers secured directly to and telescoping
with the walls of the box proper.
Duct - A single enclosure raceway for conductor or cables.
Electrical Metallic Tubing - Metal pipe into which electric
wires may be drawn and which has a wall thinner than that of
rigid conduit with an outside diameter suffiency different from
that of rigid conduit to render it impracticable for anyone to
thread it with standard pipe thread.
Electric Motor - A machine which transform electric power into
mechanical power.
Feeder - All circuit conductors between the service equipment,
the source of a separately derived system, or other power supply
source and the final branch-circuit over current device.
Festoon Lighting - A string of outdoor lights that is suspended
between two points.
Flame-Retardant - So constructed or treated that it will not
readily burn or convey flame.
Flexible Conduit - Non-rigid metal conduit into which conductors
may be drawn.
Flexible Tubing - Nonmetallic and non-rigid tubing, commonly
known as “Loom”, through which a conductor may be drawn.
Fuse - An over current protective device with a circuit-opening
fusible member which is heated and severed by the passage of
over current through it.
General-Purpose Branch Circuit
Grounded Circuit - A circuit in which one conductor or point
(usually the neutral conductor or neutral point of transformer or
generator winding) is intentionally grounded, either solidly or
through a grounding device.
Grounded Conductor - A system or circuit conductor that is
intentionally grounded.
Grounding Electrode Conductor - The conductor used to
connect the grounding electrode to the equipment grounding
conductor, to the grounded conductor, or to both, of the circuit at
the service equipment or at the source of a separately derived
system.
Ground-Fault Circuit Interrupter - A device intended for the
protection of personnel that functions to de-energize a circuit or
portion thereof within an established period of time when a
current to ground exceeds some predetermined value that is less
than that required to operate the overcurrent protective device of
the supply circuit.
Insulated Conductor - Separated from other conducting surfaces
by a dielectric permanently offering a high resistance to the
passage of current and to disruptive discharge.
Junction Box - A box with a blank cover which serves the
purpose of joining different runs of raceway or cable, and
provided with sufficient space for connection and branching of
the enclosed conductors.
Knife Switch - A form of air switch in which the moving
element is a hinged blade wedged between stationary contact
blades when closed.
Lighting Outlet - An outlet intended for the direct connection of
a lamp holder, a lighting fixture, or a pendant cord terminating in
a lamp holder.
Mast - A column pole, or narrow base structure of wood, steel, or
other material, supporting overhead conductors, usually be means
of arms or brackets.
Metal-Clad - So constructed that the conducting parts are
entirely enclosed in a metal casing or enclosure.
Motor Control Center - An assembly of one or more enclosed
sections having a common power bus and principally containing
motor control units.
Nonincendive Circuit - A circuit, other than field wiring, in
which any arc or thermal effect produced under intended
operating conditions of the equipment, is not capable, under
specified test conditions, of igniting the flammable gas–, vapor–,
or dust–air mixture.
Nonincendive Field Wiring - Wiring that enters or leaves an
equipment enclosure and, under normal operating conditions of
the equipment, is not capable, due to arcing or thermal effects, of
igniting the flammable gas–, vapor–, or dust–air mixture. Normal
operation includes opening, shorting, or grounding the field
wiring.
Panelboard - A single panel or group of panel units designed for
assembly in the form of a single panel; including buses,
automatic overcurrent devices, and equipped with or without
switches for the control of light, heat, or power circuits; designed
to be placed in a cabinet or cutout box placed in or against a wall
or partition and accessible only from the front.
Pendant - A device or equipment which is suspended from
overhead either by means of the flexible cord carrying the current
or otherwise.
Plenum - A compartment or chamber to which one or more air
ducts are connected and that forms part of the air distribution
system.
Pull Box - A box with a blank cover which is inserted in one or
more runs or raceway to facilitate pulling in the conductors, and
may also serve the purpose of distributing the conductors.
Raceway - An enclosed channel of metal or nonmetallic materials designed
expressly for holding wires, cables, or busbars, with additional functions as
permitted in this Code. Raceways include, but are not limited to, rigid metal
conduit, rigid nonmetallic conduit, intermediate metal conduit, liquidtight
flexible conduit, flexible metallic tubing, flexible metal conduit, electrical
nonmetallic tubing, electrical metallic tubing, underfloor raceways, cellular
concrete floor raceways, cellular metal floor raceways, surface raceways,
wireways, and busways.
Reactor - A device used for the purpose of minimizing
irregularities in the flow of welding currents.
Receptacle - A receptacle is a contact device installed at the
outlet for the connection of an attachment plug. A single
receptacle is a single contact device with no other contact device
on the same yoke. A multiple receptacle is two or more contact
devices on the same yoke.
Remote-Control Circuit - Any electric circuit that controls any
other circuit through a relay or an equivalent device.
Rigid Metal Conduit - A raceway specially constructed for the
purpose of the pulling in or the withdrawing of wires or cables
after the conduit is in place and made of metal pipe of standard
weight and thickness permitting the cutting of standard threads.
Separately Derived System - A premises wiring system whose
power is derived from a battery, a solar photovoltaic system, or
from a generator, transformer, or converter windings, and that has
no direct electrical connection, including a solidly connected
grounded circuit conductor, to supply conductors originating in
another system.
Service Conductors - The conductors from the service point to
the service disconnecting means
Service-Entrance Conductors, Overhead System - The service
conductors between the terminals of the service equipment and a
point usually outside the building, clear of building walls, where
joined by tap or splice to the service drop.
Signaling Circuit - Any electric circuit that energizes signaling
equipment.
Solar Photovoltaic System - The total components and
subsystems that, in combination, convert solar energy into
electrical energy suitable for connection to a utilization load.
Strain Insulator - A single insulator, an insulator string, or two
or more string parallel, designed to transmit to the tower or other
support the entire pull of the conductors and to insulate it
therefrom.
Switchboard - A large single panel, frame, or assembly of panels
on which are mounted, on the face or back, or both, switches,
overcurrent and other protective devices, buses, and usually
instruments. Switchboards are generally accessible from the rear
as well as from the front and are not intended to be installed in
cabinets.
Switchgear - A general term covering an assembly or assemblies
of devices for the interruption, control, metering of electric
power.
Unit Substation - Consists primarily, of one or more
transformers mechanically and electrically connected and
coordinated in design and construction with one or more
switchgear, or motor control, assemblies or combination thereof.
ARTICLE 1.2 – PERMITS AND
INSPECTION CERTIFICATES
1.2.1 Electrical Permits
• 1.2.1.1 Electrical Permit Needed Before Work is Started
 Before starting any installation work, alternation, repair or extension on
any electrical system, the owners, lessors, operator, occupants, or
electrical practitioners shall obtain Electrical Permit for Building,
Trailers, mobile homes, or other premises from the Office of the Local
Building Official, and for watercrafts from the Maritime Industry
Authority (Marina).
1.2.1.2 Requirement for Electrical Permit
• Signatures and submittals:
a.
Application for Electrical Permit(DPWH Form No. 96-001-E).
1. Duly qualified electrical practitioner.
2. Professional Electrical Engineer who signed and sealed electrical
plans and specifications.
3. Duly registered electrical contractor (with PCAB License –
Specialty
Electrical
Works).
**Philippine
Contractor
Accreditation Board
4. Electrical practitioner in-charge of installation.
5. Owner/authorized representative.
b.
Five (5) sets of complete electrical plans and specifications signed
and sealed by Professional Electrical Engineer.
1.2.1.3 Electrical Permit to Be Issued Immediately
a.
The application, upon receipt, shall be checked immediately by the
local building officials or his representatives for complete with the
requirements. If complying, the Electrical Permits shall be issued
upon payment of the corresponding electrical fees.
b.
If the project is extensive and required more time for checking and for
computations of fees, the issuance of the Electrical Permit need not be
issued immediately. The delay shall not be longer than five (5)
working days after which time application together with the
accompanying plans shall be considered as complying with all the
requirement and the electrical permit shall be issued immediately
thereafter.
1.2.1.4 Posting of Electrical Permit
• A copy of the Electrical Permit (DPWH Form No. 96-002-E) shall be
posted at a conspicuous location at the job site and shall not be removed
until final inspection and approval of the work shall have been made.
1.2.2 Electrical Inspection
•
1.2.2.1 Application for Inspection

•
An application for inspection shall be filed with the government
authority concerned before a preliminary and/or final inspection is
done.
1.2.2.2 Certificate of Inspections

No electrical installation, alternation, and/or addition shall be
connected or reconnected to any power supply or any other source of
electrical energy without a Certificate of Final Electrical
Inspection/Completion (DPWH Form No. 96-006-E) obtained from
the government authority concerned.
1.2.3 Special
• 1.2.3.1 Temporary Installation
 For temporary electrical installation, the same procedure as stated
above shall be followed. At the end of the period covered by the
certificate of inspection, the temporary installation shall be removed.
Extended use of the temporary installation shall require a new approval
electrical permit.
• 1.2.3.2 Installation Without Permit
 Installation of not more than two (2) additional lighting and
receptacle/convenience outlets for general purpose may be installed
without electrical permit and certificate of final electrical
inspection/completion.
• 1.2.3.3 Special Permission Required
 Electrical equipment and wiring not specifically covered or mentioned
in the various articles of this Code shall require special permission and
approval of the enforcing government authority concerned, prior to
installation.
•
1.2.3.4 Reconnection of Disconnected Services

Reconnection by the utility company of electrical energy in cases
where service has been cut off for not more than one (1) year due to
non-payment of electric bills, service interruption due to electrical
fault, and temporary shutdown/maintenance, shall not require a new
certificate of final electrical inspection/completion, provided that there
is no alteration on existing electrical connection and reconnection
shall be at the discretion of the electric utility company.
ARTICLE 1.3 — ELECTRICAL
PLANS AND SPECIFICATIONS
1.3.1 General
• 1.3.1.1 Sheet Size
 Electrical plans and drawings shall be drawn on sheets of the following
standard sizes:
760 mm x 1 000 mm
600 mm x 900 mm
500 mm x 760 mm
• 1.3.1.2 Drawing Scale
 For floor/deck and riser/profile plans, 1:100 scale shall be used.
(Other metric scales may be used for convenience)
1.3.2 Plans and Specifications
• 1.3.2.1 Plan Requirements
A. Location and Site Plans - Location and site plans, with proposed
structure and owner’s land drawn to appropriate metric scale shall
show:
i. Bordering areas showing public or well-known streets, landmarks
and/or structures which need not be drawn to scale unless they
extend into the area concerned;
ii. Location of service drop, service equipment and nearest pole of
the utility company furnishing electrical energy; location of the
meter as well as sizes of service entrance wires, conduits and
service equipment; and
iii. Clearance of the path or run of service drops and entrance wires
to adjacent existing and/or proposed structures.
B.
C.
Legend or Symbols. Refer to Appendix A – Electrical Symbols.
General Notes and/or Specifications - General Notes and/or
Specifications, written on the plans or submitted on separate standard size
sheets shall show:
1. Nature of electrical service, including number of phases, number of
wires, voltage and frequency:
2. Type of wiring;
 Service entrance
 Feeders, sub-feeders and branch circuit wires for lighting and/or
power load
 Fire alarm system, if required by law
 Signaling and communication
3.
Special equipment to be installed, indicating ratings and classification of
service or duty cycle of;




4.
5.
6.
D.
Rectifiers
Heaters
X-ray apparatus
Electric welding equipment
System or method of grounding.
Type and rating of main disconnecting means, overcurrent protection
(OCP) and branch circuit wiring.
Clearances of service drop, burial depth for service lateral, mounting
height and clearance for service equipment, mounting height and
clearance for kW-Hr meter.
Electrical Layout. Floor plan showing location of equipment and
devices, and their interconnection wiring.
1. Plan for Power. Layout and wiring plans for power on the
floor plans drawn to scale, shall show:
i.
ii.
iii.
iv.
Sizes and location of service entrance conductors, raceways, metering
equipment, main switchboard, layout of feeders and distribution panels
or switches and their sizes, types and ratings.
Complete circuits of motors and other electrical equipment, their
controlling devices, their locations and ratings.
Complete wiring of emergency power system, if any.
Nature of processes/activities carried out in each room or area.
2. Plan for Lighting and Receptacle Outlets. Layout and wiring
plans for general lighting and convenience outlets on floor
plans drawn to scale, shall show:
i.
ii.
iii.
iv.
v.
vi.
Location, type and rating of lighting fixtures, indicating illumination in
lux in each room or area. In residences, hotels, apartment houses, and
churches, the illumination level in each room or area need not be shown
nor computed.
Location of switches for each fixtures or group of fixtures.
Location of receptacle outlets and appliances to be served and their
ratings.
Complete circuits of the lighting and convenience outlets.
Complete wiring of emergency lighting system, if any;
A separate drawing showing layout of receptacle outlets may be made at
the discretion of the design engineer.
3. Plan for Fire Alarm Circuits. Layout and wiring plans of fire
alarm station, fire alarm bell, fire alarm control panel, and
other shall be drawn to scale and show:
i.
ii.
Location of outlets, equipment and/or apparatus and controls.
Complete circuit showing no. and size of raceway and wire.
E. Schedule of Loads - Schedule of load in tabulated form shall indicate:
1. Motor Loads









Motors as numbered or identified in power layout
Type of motor
Horsepower/kilowatt/kilovolt ampere rating
Voltage rating
Full-load current rating
Frequency rating other than 60 hertz
Number of phases
Type and size of wiring
Protective device rating
2.
Lighting and Convenience Receptacle Loads.
 Panel as numbered in the feeder diagram
 Circuit designation number
 Number of lighting outlets in each circuit
 Number of switches in each circuit
 Number of receptacles (convenience outlets)
 Voltage of circuit
 Type and size of wiring
 Protective device rating
3. Other Loads
 Designation number on plan
 Description of load
 Classification of service duty, if required
 Rating of kilovolt-ampere or kilowatt
 Phase loading indicating full load line current
 Voltage rating
 Type and size of wiring
 Protective device rating
F. Design Analysis. Design analysis shall be included on the drawings or shall
be submitted on separate sheets of standard size, and shall show:
1.
2.
3.
4.
Branch circuits, sub-feeders, feeders, busways, and service, entrance .
Types, ratings, and trip settings of overload protective devices;
Calculation of short circuit current for determining the interrupting
capacity of overurrent protection device;
Calculation of voltage drops.
G. One Line Diagram. One line diagram shall indicate:
1. Lighting and Receptacle Outlet Loads;
a. Single line or schematics diagram of lighting and receptacles
panelboards showing mains and branch circuit rating;
b. Size of conductors for feeders.
2. Motor Loads
a. Rating in kilowatts/horsepower/kilovolt ampere
b. Full load current
c. Locked rotor current
d. Phase connection for 1-phase motor on a 3-phase system
e. Rated voltage
f. Type and size of wiring, indicating load in amperes
g. Electric motors shall be numbered consecutively to correspond to
their numbers in the layout
• Feeders and Sub feeders
a.
b.
c.
d.
Identification and/or labeling of feeders and sub feeders.
Size and type of wires and raceway.
Protective devices and controls.
The allowable ampacity of the conductor over the designed load current in
amperes expressed as a ratio and indicated along side the conductor.
• Load Center
a. Identification and/or labeling of load center showing type and rating of
transformer, switches, circuit breaker and other related devices.
b. Incoming and outgoing feeders, type, size and voltage.
c. Equipment grounding.
1.3.2.2 Title Block - Title block or nameplate of plans and
drawing shall be a standard strip of 40 mm high at the bottom of
the sheet.
It shall contain the following:
a. Name and location of installation or project
b. Name, signature and address of owner/manager/ operator
c. Title of sheet
d. Name, signature and seal of Professional Electrical Engineer together
with Professional Regulation Commission professional license
number and validity, Professional Tax Receipt Number, and Tax
Identification Number
e. Scale used, date drawn
f. Sheet number
1.3.2.3 Other Details
a.
Exposed conductors shall show:
 Means of support and types of insulators; and
 Spacing's and clearances.
b.
Auxiliary gutters, wire ways, bus ways, cabinets, boxes, metallic
raceways, underground installations, other than specified in the Code
shall show:
 Installation details;
 Conductor supports, separators, and attachments where required by
this Code; and
 Dimensions and description or specifications.
• Low energy power and low voltage power installation shall show:
a. Details of battery installation and/or other source of low voltage or low
energy power.
b. Equipment, wiring, actuating mechanism and protective devices.
c. Ventilation details whenever necessary.
1.3.3 Substation Plans and Specifications
• 1.3.3.1 Indoor Substation. Indoor substation plans shall show:
a. Location and dimensions of:
1. Substation in building plan drawn to scale,
2. Building with respect to entire compound or property,
3. Incoming and outgoing lines, and
4. Windows, doors, and other openings.
• Substation structural requirements
1. Materials and construction of walls, floors, roof, windows, enclosures,
doors, and their dimensions .
2. Ventilation and drainage systems and other safeguards.
• Substation electrical requirements
1. Plan view showing location and sizes of equipment installed,
2. Clearances and spacing's between exposed current-carrying and
noncurrent-carrying portions and grounding equipment.
3. Grounding system.
• Cross sectional views showing
1. Horizontal and vertical clearances between exposed parts and adjacent
surfaces.
2. Horizontal and vertical clearances of exposed parts from floor/ceiling.
3. Finished floor level and ground level.
• Miscellaneous
1. Specification of equipment
2. Wiring of lighting and remote control systems,
3. One-line diagram(s) of entire installation with voltage indicated,
4. Computations on size of wires, busbar, transformer, fuses, switches
and breaker, and
5. Class of insulation or insulators.
1.3.3.2 Outdoor Substation
• Outdoor substation plans shall show same items as indoor substation
except that in lieu of walls and roof, details of fence and supporting
steel structure shall be shown in accordance with the latest edition of
the Philippine Electrical Code, Part 2.
ARTICLE 1.10 ⎯ REQUIREMENTS
FOR
ELECTRICAL INSTALLATIONS
1.10.1 General
• 1.10.1.2 Approval. The conductors and equipment required or permitted
by this Code shall be acceptable only if approved.
• 1.10.1.3 Examination, Identification, Installation, and Use of
Equipment.
A. Examination- In judging equipment, considerations such as the
following shall be evaluated:
1. Suitability for installation and use in conformity with the
provisions of this Code.
2. Mechanical strength and durability, including, for parts designed to
enclose and protect other equipment, the adequacy of the
protection thus provided.
3. Wire-bending and connection space.
4.
Electrical insulation.
5.
Heating effects under normal conditions of use and also under
abnormal conditions likely to arise in service.
6.
Classification by type, size, voltage, current capacity, and specific
use.
7. Other factors that contribute to the practical safeguarding of persons
using or likely to come in contact with the equipment.
B.
Installation and Use - Listed or labeled equipment shall be installed and
used in accordance with any instructions included in the listing or
labeling.
1.10.1.4 Voltages. Throughout this Code, the voltage considered shall be that
at which the circuit operates. The voltage rating of electrical equipment
shall not be less than the nominal voltage of a circuit to which it is
connected.
1.10.1.5 Conductors. Conductors normally used to carry current shall be of
copper unless otherwise provided in this Code. Where the conductor
material is not specified, the material and the sizes given in this Code
shall apply to copper conductors. Where other materials are used, the size
shall be changed accordingly.
1.10.1.6 Conductor Sizes. Conductor sizes are expressed in square
millimetres (mm2) for stranded or in millimetres diameter (mm dia.) for
solid.
1.10.1.7 Insulation Integrity. Completed wiring installations shall be free
from short circuits and from grounds other than as required or permitted in
Article 2.50.
1.10.1.8 Wiring Methods. Only wiring methods recognized as suitable are
included in this Code. The recognized methods of wiring shall be permitted
to be installed in any type of building or occupancy, except as otherwise
provided in this Code.
1.10.1.9 Interrupting Rating. Equipment intended to interrupt current at fault
levels shall have an interrupting rating sufficient for the nominal circuit
voltage and the current that is available at the line terminals of the
equipment.
1.10.1.10 Circuit Impedance and Other Characteristics. The overcurrent
protective devices, the total impedance, the component short-circuit current
ratings, and other characteristics of the circuit to be protected shall be
selected and coordinated to permit the circuit-protective devices used to
clear a fault to do so without extensive damage to the electrical components
of the circuit.
1.10.1.11 Deteriorating Agents. Unless identified for use in the operating
environment, no conductors or equipment shall be located in damp or wet
locations; where exposed to gases, fumes, vapors, liquids, or other agents
that have a deteriorating effect on the conductors or equipment; or where
exposed to excessive temperatures.
1.10.1.18 Arcing Parts. Parts of electric equipment, which in ordinary
operation produce arcs, sparks, flames, or molten metal, shall be enclosed
or separated and isolated from all combustible material.
1.10.1.21 Marking. The manufacturer’s name, trademark, or other descriptive
marking by which the organization responsible for the product can be
identified shall be placed on all electric equipment. Other markings that
indicate voltage, current, wattage, or other ratings shall be provided as
specified elsewhere in this Code. The marking shall be of sufficient
durability to withstand the environment involved.
1.10.1.22 Identification of Disconnecting Means. Each disconnecting means
required by this Code for motors and appliances, and each service, feeder,
or branch circuit at the point where it originates, shall be legibly marked to
indicate its purpose unless located and arranged so the purpose is evident.
The marking shall be of sufficient durability to withstand the environment
involved.
End