4 HOUR 2008 NEC CODE CHANGES
PRESENTED BY THE ELECTRICAL
TRAINING CENTER
IN-SERVICE TRAINING #49-5880
Article 100, Entire Code
• Grounding and bonding terms have been redefined and
simplified for clarity and improved usability.
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Bonded (Bonding) – Revised
Ground – Revised
Grounded (Grounding) – Revised
Grounded, Effectively – Deleted
Grounding Conductor, Equipment (EGC) – Revised
Grounding Electrode – Revised
Grounding Electrode Conductor – Revised
Ungrounded – New
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Photo: IAEI Archives
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Photo: IAEI Archives
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Article 100 – Ground
• Ground. The earth.
• The term ground has been revised and
simplified for clarity and improved
usability.
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Article 100 – Ground
The earth
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Article 100 Grounding Electrode
• Grounding Electrode. A conducting object
through which a direct connection to earth
is established.
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Article 100 – Kitchen
• New definition of the term kitchen has
been added to Article 100.
• Kitchen. An area with a sink and
permanent facilities for food preparation
and cooking.
• A sink and permanent provisions for food
preparation and cooking are required for
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an area to qualify as a kitchen.
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110.12(A) Unused Openings
• The words cable or raceway have been deleted to
extend the requirements to all unused openings other
than those necessary for operation of the equipment.
• 110.12(A) Unused Openings. Unused openings, other
than those intended for the operation of equipment,
intended for mounting purposes, or permitted as part of
the design for listed equipment shall be closed to afford
protection substantially equivalent to the wall of the
equipment. Where metallic plugs or plates are used with
nonmetallic enclosures, they shall be recessed at least 6
mm (¼ in.) from the outer surface of the enclosure.
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Photo: IAEI Archives
Photo: IAEI Archives
Photo: IAEI Archives
Chapter Two
Wiring and Protection
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210.5(C) Ungrounded Conductors
• Where a premises wiring system is supplied by more
than one nominal voltage system, each branch circuit is
required to be identified by phase or line and system.
• This identification shall be used at all termination,
connection, and splice points.
• The means of identification is required to be permanently
posted at each branch-circuit panelboard or similar
branch-circuit distribution equipment.
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Ground-fault circuit
interrupter protection
requirements apply
to receptacles that are
not readily accessible.
Applies to dwelling
unit garages and
unfinished basements,
and accessory
buildings.
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210.8(B) Other Than Dwelling Units
• All 125-volt, single-phase, 15- and 20-ampere
receptacles installed in the locations specified in (1)
through (5) shall have ground-fault circuit-interrupter
protection for personnel.
(1) Bathrooms
(2) Kitchens
(3) Rooftops
(4) Outdoors
See Code text for exceptions.
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210.8(B)(5) Sinks
• Other than Dwelling Units
• Receptacles installed within 1.8 m (6 ft) of the outside
edge of a sink are required to be protected by groundfault circuit-interrupter protection.
• Exception No. 2 to (5): For receptacles located in patient
care areas of health care facilities other than those
covered under 210.8(B)(1), GFCI protection shall not be
required.
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Photo IAEI Archives
210.8(C) Boat Hoists
• GFCI protection shall be provided for
outlets not exceeding 240 volts that supply
boat hoists installed in dwelling unit
locations.
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210.12(B) Dwelling Units
• Dwelling Units. All 120-volt, single-phase,
15- and 20-ampere branch circuits
supplying outlets installed in dwelling unit
family rooms, dining rooms, living rooms,
parlors, libraries, dens, bedrooms,
sunrooms, recreation rooms, closets,
hallways , or similar rooms or areas shall
be protected by a listed arc-fault circuit
interrupter, combination-type, installed to
provide protection of the branch circuit. 4/13/2015
Photo: IAEI Archives
240.24(B) Occupancy
• The two exceptions have been rewritten into positive text
and the section has been arranged to provide a more
logical layout for improved clarity and application of the
overcurrent device accessibility requirements.
• When electric service is provided by and continuously
supervised by building management personnel, the
branch-circuit overcurrent devices supplying guest
rooms or guest suites without permanent provisions for
cooking shall be permitted to be accessible to only
authorized management personnel.
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Chapter Three
Wiring Methods and
Materials
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Photo: IAEI Archives
Photo: IAEI Archives
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330.10(A)(11) Uses Permitted
• Type MC cable is permitted for use in wet
locations where a corrosion-resistant
jacket is provided over the metallic sheath.
• c. The insulated conductors under the
metallic covering are listed for wet
locations and a corrosion-resistant jacket
is provided over the metallic sheath.
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Photo: IAEI Archives
Photo: IAEI Archives
Photo: IAEI Archives
Chapter Four
Equipment for General Use
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Capable of Being Locked in the
Open Position
• The rules for required disconnecting means have been
revised to address the specific characteristics of
disconnects that are capable of being locked in the open
position.
• The provision for adding a lock is required to remain with
the switch or circuit breaker whether the lock is installed
or not.
• The provision should be inherent to the equipment or be
an accessory feature that is provided by the
manufacturer for establishing the locking capability.
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Photo: IAEI Archives
Photo: IAEI Archives
Photo IAEI Archives
406.4(G) Voltage Between
Adjacent Devices
• A new subdivision (G) covering voltage
between adjacent receptacles has been
added to 406.4.
• Where voltages between adjacent
receptacles in ganged enclosures exceed
300, identified and securely fastened
barriers are required between the devices.
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406.8(A) and (B)(1) Damp and Wet
Locations
• Standard nonlocking receptacles in 125- and 250-volt
configurations are required to be listed weather-resistant
type.
• A new second sentence has been added in 406.8(A) and
406.8(B)(1) and a new FPN follows each section.
• All nonlocking 15- and 20-ampere, 125- and 250-volt
receptacles shall be listed weather-resistant type.
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Courtesy of Pass & Seymour/Legrand
410.16 Luminaires in Clothes
Closets
• (A)(3) Surface-mounted fluorescent or LED luminaires
identified as suitable for installation within the storage
area.
• (C)(1) 300 mm (12 in.) for surface-mounted
incandescent or LED luminaires…or on the ceiling.
• (C)(3) 150 mm (6 in.) for recessed incandescent or LED
luminaires…or the ceiling.
• (C)(5) Surface-mounted fluorescent or LED luminaires
shall be permitted to be installed in the storage space
where identified for this use.
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Listed LED luminaires
suitable for installations
in clothes closets.
Photos: Courtesy Of Ardee Lighting
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410.30(B)(1) Handhole
• (1) A pole shall have a handhole not less
than 50 mm × 100 mm (2 in. × 4 in.) with a
cover suitable for wet locations to provide
access to the supply terminations within
the pole or pole base.
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Photo: IAEI Archives
Photo: IAEI Archives
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Photo: IAEI Archives Thomas and Betts
Photo: IAEI Archives
Photo: IAEI Archives
411.3 Listing Required
• This section has been revised to include a subdivision
(A) covering listed systems, and a subdivision (B)
covering field assemblies using listed parts.
• In (B) the luminaires, power supply, and luminaire fittings
(including the exposed bare conductors) of an exposed
bare conductor lighting system installation shall be listed
for use as part of the same identified lighting system.
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422.52 Electric Drinking
Fountains
• Electric drinking fountains shall be
protected with ground-fault circuitinterrupter protection.
• Bottled water coolers are not affected by
this rule.
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Photo: IAEI Archives
Photo: IAEI Archives
480.5 Disconnecting Means
• A disconnecting means shall be provided
for all ungrounded conductors derived
from a stationary battery system over 30
volts.
• The disconnecting means shall be readily
accessible and located within sight of the
battery system.
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Chapter Five
Special Occupancies
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511.2 Major Repair Garage
• A building or portions of a building where
major repairs, such as engine overhauls,
painting, body and fender work, and
repairs that require draining of the motor
vehicle fuel tank are performed on motor
vehicles, including associated floor space
used for offices, parking, or showrooms.
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511.2 Minor Repair Garage
• A building or portions of a building used for
lubrication, inspection, and minor automotive
maintenance work, such as engine tune-ups,
replacement of parts, fluid changes (e.g., oil,
antifreeze, transmission fluid, brake fluid, air
conditioning refrigerants), brake system repairs,
tire rotation, and similar routine maintenance
work, including associated floor space used for
offices, parking, or showrooms.
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517.32(C)(3) Alarm and Alerting
Systems
• Section 517.32(C) has been revised to
include a new list item (3) under alarm and
alerting systems.
• Mechanical, control, and other
accessories, such as dampers and some
motors, required for effective life safety
shall be permitted to be supplied by the life
safety branch.
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Chapter Six
Special Equipment
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Photo: IAEI Archives
620.21(A)(3)(e) Elevators Flexible
Cords and Cables
• Flexible cords and cables are permitted in
machine rooms or spaces and control
rooms or spaces without raceways under
the following conditions:
– They are not longer than 1.8 m (6 ft).
– They are flame-retardant.
– They are protected from physical damage.
– They are part of the elevator equipment or
driving machine.
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Photo: IAEI Archives
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645.2 Definition
• Abandoned Supply Circuits and
Interconnecting Cables.
• Installed supply circuits and
interconnecting cables that are not
terminated at equipment and not identified
for future use with a tag.
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Photo: IAEI Archives
680.71 Protection
• Hydromassage bathtubs and their associated
electrical components shall be on an individual
branch circuit(s) and protected by a readily
accessible ground-fault circuit interrupter.
• All 125-volt, single-phase receptacles not
exceeding 30 amperes and located within 1.83
m (6 ft) measured horizontally of the inside walls
of a hydromassage tub shall be protected by a
ground-fault circuit interrupter(s).
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Photo: IAEI Archives
Photo: IAEI Archives
Chapter Seven
Special Conditions
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Chapter Eight
Communications Systems
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800.24 Mechanical Execution of
Work
• Listed and non-listed securing methods
and hardware are permitted to be used
with network-powered broadband
communications circuits.
• Cable ties are now recognized as a
securing means for NPBCS cables.
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800.156 Dwelling Unit
Communications Outlet
• At least one communications outlet is
required to be installed within a dwelling
unit.
• The wiring for this communication outlet
shall be routed to the service provider
demarcation point of the dwelling unit.
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Photo: IAEI Archives
THINK SAFETY
THE END