 |
90.2 Scope of the NEC |
This subsection was revised to group similar types of installations together and to make it easier to read. The first sentence was revised to read:
. . . |
| |
90.2 Scope of the NEC |
The rule that exempts electric utilities from complying with the requirements of the NEC was revised to read: (B) Not Covered.
(5) E . . . |
| |
90.4 Enforcement (Inspection) |
The first paragraph of this section was revised to read:
This Code is intended to be suitable for enforcement by governmental bodies that ex . . . |
| |
Grounding Electrode Conductor |
The definition for “Grounding Electrode Conductors” was revised to read:Grounding Electrode Conductor. The conductor that . . . |
| |
Ground-Fault Circuit Interrupter |
The definition for “Ground-Fault Circuit Interrupter” was revised to read:
Ground-Fault Circuit Interrupter. A device int . . . |
| |
Luminaire |
A new definition was added to replace the NEC terms “fixtures” and “lighting fixtures.” This definition reads:
Lumi . . . |
| |
Qualified Person |
The definition of “Qualified Person” was revised to read:
Qualified Person. A person who has the skill and knowledge re . . . |
| |
110.12 Mechanical Execution of Work |
This rule was revised to read:
(A) Unused Opening. Unused cable or raceway openings in boxes, auxiliary gutters, cabinets, cuto . . . |
| |
110.14 Electrical Connections |
New text was added to clarify conductor sizing for terminals and it reads:
(C)Temperature Limitations
(1) Equipment Provisions. Th . . . |
| |
110.15 High-Leg Marking |
New rule added to cover the identification of the high-leg. This rule reads:
On a 4-wire, delta-connected system where the midpoint of one p . . . |
| |
110.16 Flash Protection |
A new Code section and two FPN’s were added to provide requirements for marking equipment where arc fault hazards may be present. The new secti . . . |
| |
110.22 Identification of Disconnecting Means |
The text was revised to read:
All installed disconnecting means must be legibly marked to indicate their purpose unless they are l . . . |
| |
110.26 Spaces About Electrical Equipment |
A new sentence was added, which addresses exit door requirements (panic hardware) for rooms containing large electrical equipment. This section now r . . . |
| |
110.26 Spaces About Electrical Equipment |
The intent of the requirements for "dedicated equipment space" located indoors was completely revised and the rule reads:
(F) Dedicated Equ . . . |
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200.6 Means of Identifying Grounded (neutral) Conductor |
The term "natural" was deleted and a FPN was added to this section. It reads:
(A) Identifying Grounded (neutral) Conductors 6 AWG or Small . . . |
| |
200.7 Use of Insulation of a White or Gray Color |
The term "natural" was deleted and a FPN added to this section to read:
(C) Circuits Over 50V. The use of white or natural gray in . . . |
| |
210.63 Heating, Air-Conditioning, and Refrigeration Equipment Outlet |
The words “on rooftops and in attics and crawl spaces” and the exception were deleted so that this rule would coordinate with the mechanic . . . |
| |
210.7 Branch Circuit Receptacle Requirements |
New text clarifies the requirement for simultaneously disconnecting the ungrounded branch circuit conductors.
(C) Multiple Branch Circuits. . . . |
| |
210.8 Ground-Fault Circuit-Interrupter Protection for Personnel |
New subsection was added to include boathouses.(A) Dwelling Units. GFCI protection must be provided for all 15 and 20A, single-phase . . . |
| |
210.8 Ground-Fault Circuit-Interrupter Protection for Personnel |
New subsection was added to include kitchens.
(B) Other than Dwelling Units. All 15 and 20A, single-phase, 125V receptacles instal . . . |
| |
210.12 Arc-Fault Circuit-Interrupter (AFCI) Protection |
The word "receptacle" was deleted and the words “listed device that protects the entire branch circuit” were added. This subsectio . . . |
| |
210.52 Dwelling Unit Receptacle Outlets |
The maximum distance the required receptacle for the counter surface can be above a dwelling unit kitchen counter surface was changed from 18 in. to 2 . . . |
| |
210.52 Dwelling Unit Receptacle Outlets |
This section was revised to read:
(D) Bathrooms. In dwelling units, at least one 15 or 20A, single-phase, 125V receptacle outlet . . . |
| |
210.52 Dwelling Unit Receptacle Outlets |
This section was revised to read:
(G) Basements and Garages. For a one-family dwelling, at least one 15 or 20A, single-phase 125V . . . |
| |
225.32 Disconnecting Means Location |
Exception No. 1 was revised to read:
The disconnecting means for a building or structure must be installed either inside or outside of the . . . |
| |
230.10 Vegetation as Support |
A new rule was added, which reads:Vegetation such as trees cannot be used for the support of overhead service conductors. Figure 230-1< . . . |
| |
230.50 Protection of Cables Against Damage – Above Ground |
Item (3) was revised from “rigid nonmetallic conduit” to Schedule 80 rigid nonmetallic conduit, so that this section reads:
|
| |
230.70 Service Disconnect - General |
New text was added and it reads:
(A) Location of Service Disconnecting Means
(3) Remote Control. Where a remote con . . . |
| |
240.2 Definitions |
The following definitions were added for Article 240:
Current-Limiting Overcurrent Protective Device. A current-limiting overcurre . . . |
| |
240.21 Location in Circuit |
A new subsection was added to read:
(C) Transformer Secondary Conductors
(6) Secondary Conductors Not Over 25 ft. Secondary condu . . . |
| |
240.33 Vertical Position |
This section was revised to read:
Enclosures for overcurrent devices must be mounted in a vertical position unless it is impracticable. Cir . . . |
| |
240.83 Marking |
This subsection was revised and it reads:
(D) Used as Switches. Circuit breakers used to switch 120V or 277V fluorescent lighting . . . |
| |
240.85 Applications |
The second paragraph was revised and a FPN was added to read:
A circuit breaker with a straight voltage rating (240V or 480V) can be used o . . . |
| |
240.85 Applications |
Author’s Comment: A 120/240V slash circuit breaker cannot be used on the high-leg of a solidly-grounded 120/240V delta system, because . . . |
| |
250.2 Definitions |
The following definitions were added to Article 250:
Effective Ground-Fault Current Path. An intentionally constructed, permanent, . . . |
| |
250.4 General Requirements for Grounding and Bonding |
Section 250-2 in the 1999 NEC was revised and relocated to 250.4. It now reads:
(A) Grounded Systems.
(2) Grounding of Electrical Equip . . . |
| |
250.4 General Requirements for Grounding and Bonding |
Section 250-2 in the 1999 NEC was revised and relocated to 250.4. It now reads:
(A) Grounded Systems.
(3) Bonding of Electrical Equipme . . . |
| |
250.4 General Requirements for Grounding and Bonding |
Section 250-2 in the 1999 NEC was revised and relocated to 250.4. It now reads:
(A) Grounded Systems.
(4) Bonding of Electrically Conductiv . . . |
| |
250.4 General Requirements for Grounding and Bonding |
(A) Grounded Systems.
(5) Effective Ground-Fault Current Path. Electrical equipment and other electrically conductive mate . . . |
| |
250.30 Grounding Separately Derived Alternating-Current Systems |
This Subsection was reworded and additional requirements added to contain the requirements for grounding multiple separately derived systems. This su . . . |
| |
250.32 Buildings or Structures Supplied with Feeder |
This subsection added a new requirement and it reads:
(B) Grounded Systems
(2) Grounded (neutral) Conductor. Where (1) an equipme . . . |
| |
250.32 Two or More Buildings or Structures Supplied with Feeder |
The rule now reads:
(E) Grounding Electrode Conductor. The size of the grounding electrode conductor for a buil . . . |
| |
250.50 Grounding Electrode System |
This section was completely revised to read:
If available on the premises at each building or structure, all of the electrodes identified i . . . |
| |
250.54 Supplementary Grounding Electrodes |
This section was revised to read:
Supplementary grounding electrodes can be installed and they can be connected to the equipment grounding . . . |
| |
250.102 Equipment Bonding Jumpers |
A new exception was added to this subsection and this subsection now reads:
(E) Installation. The equipment bonding jumper can be installe . . . |
| |
250.104 Bonding of Piping Systems and Exposed Structural Steel |
The word “interior” was deleted in this section. This section now reads:
(A) Metal Water Piping
(1) General Requirements.
|
| |
250.104 Bonding of Piping Systems and Exposed Structural Steel |
An exception was added to this section. This section now reads:
(A) Metal Water Piping
(4) Separately Derived Systems. To preve . . . |
| |
250.104 Bonding of Piping Systems and Exposed Structural Steel |
The word “interior” was deleted in this section. This section now reads:
(B) Other Metal Piping Systems. Interior Me . . . |
| |
250.104 Bonding of Piping Systems and Exposed Structural Steel |
The word “interior” was deleted and the sizing of the bonding jumper was changed from 250.122 to 250.66. This section now reads:
. . . |
| |
250.118 Types of Equipment Grounding Conductors |
This subsection was completely revised to read:
(11) MC Cable. The outer metal sheath of smooth or corrugated tube type MC cable can serv . . . |
| |
250.146 Connecting Receptacle Grounding Terminal to Box |
The first sentence of this rule in the 1999 NEC was revised to delete the words “or at.” This section now reads:
(A) Surface M . . . |
| |
250.148 Continuity and Attachment of Equipment Grounding Conductors to Metal Boxes |
This section was completely reworded to read:
Where circuit conductors are spliced, or terminated on equipment within a box, any separate . . . |
| |
285.1 Scope |
This Article covers the installation and connection requirements for TVSS that are permanently installed on premises wiring systems. Figure 285 . . . |
| |
285.21 Connection |
Where a TVSS is installed, it must be connected as follows:
(A) Location.
(1) Service Supplied Building or Structure. A TVSS can be . . . |
| |
300.4 Protection Against Physical Damage |
The word “listed” was added so that this subsection now reads:
(B) Through Metal Framing Members.
(1) Nonmetallic-Sheathed Ca . . . |
| |
300.5 Underground Installations |
Replace the word “service laterals” with “service conductors,” so that this section now reads:
(D) Protection from . . . |
| |
300.7 Raceways Exposed to Different Temperatures |
The requirement for sealing against the flow of warm air to a colder section was completely reworded to read:
(A) Sealing. Where po . . . |
| |
300.15 Boxes, Conduit Bodies, or Fittings – Where Required |
This subsection was completely revised to read:
(I) Enclosures. A box or conduit body is not required where a splice is made in a . . . |
| |
310.8 Locations |
The text was revised to read:
(D) Locations Exposed to Direct Sunlight. Insulated conductors and cables used where exposed to dir . . . |
| |
310.15 Ampacities for Conductors |
A new exception was added and it reads:
(B) Table 310.16 Ampacity
(2) Adjustment Factors.
(a) More than Three Current-Carrying Conductors . . . |
| |
314.22 Exposed Surface Extensions |
The text was revised to read:
Surface extensions from a flush-mounted box must be made by mounting and mechanically securing . . . |
| |
314.27 Outlet Boxes |
The exception to the rule that required boxes used at luminaire or lampholder outlets be designed for the purpose was revised to read:
(A) . . . |
| |
314.27 Outlet Boxes |
A new subsection was added and it reads:
(B) Maximum Luminaire Weight. Outlet boxes that are properly supported in accordance with . . . |
| |
314.27 Outlet Boxes |
This subsection was revised to read:
(D) Boxes for Ceiling Paddle Fan. Where a box is used as the sole support for a ceiling paddl . . . |
| |
320.17 Through or Parallel to Framing Members |
The text was revised to read:
AC cable installed through or parallel to framing members must be protected against physical damage f . . . |
| |
320.30 Securing and Supporting |
The text was revised to read:
(B) Unsupported. AC cable can be unsupported where the cable is:
(1) Fished between concealed acces . . . |
| |
334.10 Uses Permitted |
This subsection was completely revised to read:
Type NM and NMC cables can be used in any of the following occupancies:
(1) One and Two-Fa . . . |
| |
334.12 Uses Not Permitted |
The following text was added.
(A) Types NM, NMC, and NMS. Types NM, NMC, and NMS cables shall not be used as open runs in dropped o . . . |
| |
334.17 Through or Parallel to Framing Members |
The text was revised to read:
NM cable installed through or parallel to framing members must be protected against physical damage from penet . . . |
| |
338.10 Uses Permitted |
The text was revised to read:
(B) Branch Circuits or Feeders
(4) Installation Methods for Branch Circuits and Feeders.
(a) Interior Inst . . . |
| |
342.30 Securing and Supporting |
This subsection was revised to read:
(B) Supports
(3) Vertical Risers. Exposed vertical risers for industrial machinery . . . |
| |
354.6 Listing Requirement |
This new section reads:
NUCC and its associated fittings must be listed for the purpose. Figure 354–1 Intent: . . . |
| |
362.10 Uses Permitted |
A new exception was added and it reads:
(2) In buildings exceeding three floors. ENT must be installed concealed in walls, floors, . . . |
| |
362.10 Uses Permitted |
An exception was added and it reads:
(5) Above Suspended Ceiling. ENT can be installed above a suspended ceiling if the suspended ceiling . . . |
| |
376.23 Wireway Sizing |
This section was revised to read:
(A) Bending Radius. Where conductors are bent within a wireway, the wireway must be sized to mee . . . |
| |
376.23 Wireway Sizing |
This section was revised to read:
(B) Wireway Used as Pull Box. Where insulated conductors 4 AWG or larger are pulled thro . . . |
| |
392.3 Uses Permitted |
This section was revised to read:
Cable trays can be used as a support system for services, feeders, branch circuits, communication . . . |
| |
392.6 Installation |
This section was revised to read:
(J) Raceways, Cables, and Boxes Supported from Cable Trays. In industrial facilities where condi . . . |
| |
400.7 Uses Permitted |
The word “stationary” was replaced with “utilization.” The subsection was revised to read:
(A) Uses Permitted.
|
| |
400.8 Uses Not Permitted |
This subsection was revised to read:
Unless specifically permitted in 400.7, flexible cords and cables cannot be used for the following:
( . . . |
| |
404.8 Accessibility and Grouping |
The text to this section was revised to read:
(B) Voltage Between Adjacent Devices. Snap switches shall not be grouped or ganged i . . . |
| |
404.9 Provisions for Grounding Switch Faceplates |
The text to this subsection was revised to read:
(B) Grounding. Snap switches, including dimmer and similar control switche . . . |
| |
404.14 Rating and Use of Switches (including Dimmers) |
This new subsection reads:
(E) Dimmer. General use dimmer switches must only be used to control permanently installed incandescen . . . |
| |
406.8 Receptacles in Damp or Wet Locations |
Parts of this section were revised to read:
(B) Wet Locations
(1) 15 and 20A Outdoor Receptacles. 15 and 20A, 125 and 250V rece . . . |
| |
406.8 Receptacles in Damp or Wet Locations |
Parts of this section were revised to read:
(B) Wet Locations
(2) Other Receptacles. All other receptacles installed in a wet . . . |
| |
408.21 Grounded Conductor Terminations |
Intent: This new section should ensure that grounded (neutral) conductors terminate within the panelboard to an individual terminal. This has b . . . |
| |
408.21 Grounded Conductor Terminations |
Author’s Comment: If two grounded (neutral) conductors are connected to the same terminal, and someone removes one of the neutrals, . . . |
| |
430.52 Branch Circuit Short-Circuit Protection Device Rating |
Table 430-152, which contains the maximum rating or setting of motor branch-circuit short-circuit and ground-fault protective devices, was relocated t . . . |
| |
430.62 Feeder Protection Device Rating |
The first paragraph was revised to read:
(A) Motors Only. A feeder supplying a specific fixed motor load(s) and consisting of cond . . . |
| |
430.102 Disconnect Means Location |
This subsection and its exception were revised, and two Fine Print Notes were added. This subsection now reads:
(B) Motor Disconnect.
|
| |
440.14 Location |
A sentence was added to this section so that it now reads:
Disconnecting means must be located within sight (within 50 ft) from and readily . . . |
| |
445.13 Ampacity of Generator Conductors |
The first sentence of this section was revised:
The ampacity of the conductors from the generator terminals to the first distribution devic . . . |
| |
500.2 Definitions |
A new definition for Electrical and Electronic Equipment was added and it reads:
Electrical and Electronic Equipment. Materials, f . . . |
| |
500.8 Equipment |
Additional text was added to this subsection on the suitability of equipment and it reads:
(A) Approval for Class and Properties.
(1) Com . . . |
| |
501.5 Sealing and Drainage |
A new exception No. 2 was added to read:
(A) Conduit Seals, Class I, Division 1
(4) Boundary Seal. A sealing fitting must be inst . . . |
| |
505.21 Multiwire Branch Circuits |
A new section covering the requirements for multiwire branch circuits located in Zone-classified systems reads:
Multiwire Branch Circuits. . . . |
| |
511.3 Classifications of Locations |
This exception was revised to read:
(B) Classified Locations
(1) Up to 18 inches Above the Floor. For each floor, the entire are . . . |
| |
511.3 Classifications of Locations |
New subsection added for compressed natural gas and it reads:
(B) Classified Locations
(2) Within 18 in. of the Ceiling. Where C . . . |
| |
514.13 Disconnect for Maintenance and Service of Dispensing Equipment |
This section was revised to read:
Each dispensing device must be provided with a means to remove all external voltage sources, including fe . . . |
| |
517.13 Grounding of Receptacles and Fixed Electric Equipment in Patient Care Areas |
The section was completely revised to read as follows:
(B) Insulated Equipment Grounding Conductor. In areas used for patient care . . . |
| |
517.30 Essential Electrical Systems for Hospitals |
A new subsection was added and it reads:
(E) Receptacle Identification. The cover plates for receptacles, or receptacles supplied . . . |
| |
525.32 Grounding Conductor Continuity Assurance |
A new requirement was added to require testing of the equipment grounding conductor. This new section reads:
The continuity of the groundi . . . |
| |
527.3 Time Constraints |
The word “Christmas” was replaced with “holiday” so this section now reads:
(B) 90-Day Rule. Temporary ele . . . |
| |
527.4 General |
A new sentence was added to this subsection, which reads:
(J) Supports. Vegetation cannot be used for support of overhead spans of . . . |
| |
547.2 Definitions |
The definition for an Equipotential Plane was revised to read:
Equipotential Plane. An area where wire mesh or other conductive el . . . |
| |
547.5 Wiring Methods |
This section was revised to require equipment enclosures, boxes, conduit bodies, and fittings installed in agricultural buildings to comply with the f . . . |
| |
547.5 Wiring Methods |
The GFCI requirements for agricultural buildings were revised to read:
(G) Receptacles. All 15 and 20A, single-phase 125V general- . . . |
| |
550.25 Arc-Fault Circuit Interrupter Protection |
A new subsection was added and it reads:
(B) Bedrooms of Mobile Homes and Manufactured Homes. All branch circuits that supply 15 an . . . |
| |
555.2 Definitions |
A new definition for Electrical Datum Plane was added and it reads:
Electrical Datum Plane. The electrical datum plane is defined as . . . |
| |
555.17 Boat Receptacle Disconnecting Means |
The requirement for the boat disconnecting means was completely revised to read:
(B) Location. The disconnecting means for a boat . . . |
| |
555.19 Boat Receptacle |
New text was added and it reads:
(A) Boat Receptacles
(4) Ratings. Receptacles that provide shore power for boats must be rated n . . . |
| |
600.21 Ballasts, Transformers, and Electronic Power Supplies |
This subsection was revised to read:
(F) Suspended Ceilings. Ballasts, transformers, and electronic power supplies are permitted to . . . |
| |
604.6 Construction |
This section was completely revised to read:
(E) Support. Manufactured wiring systems must be supported in accordance with the re . . . |
| |
640.6 Mechanical Execution of Work/Cable Support |
The text to this section was revised to read:
Equipment and cabling must be installed in a neat and workmanlike manner. Cables installed e . . . |
| |
645.5 Supply Circuit and Interconnecting Cables |
This subsection was revised to read:
(D) Under Raised Floors
(2) Branch Circuit Supply Conductors. The branch-circuit supply cond . . . |
| |
Article 647 Sensitive Electronic Equipment Power or Balanced Power Systems |
A new Article covering the wiring requirements for “Sensitive Electronic Equipment Power or Balanced Power Systems” was added to the 2002 . . . |
| |
680.8 Overhead Conductor Clearances |
A new subsection was added, which reads:
(B) Communications Systems. Communication cables such as telephone, radio, and CATV cabl . . . |
| |
680.8 Overhead Conductor Clearances |
A new subsection was added, which reads:
(C) Network-Powered Broadband Communications Systems. Overhead network-powered broadband . . . |
| |
680.12 Maintenance Disconnecting Means |
The word “maintenance” was added to the heading and the text was revised to read:
One or more means to disconnect all . . . |
| |
680.22 Area Lighting, Receptacles, and Equipment |
A new item (4) was added and it reads:
(A) Receptacles
(4) Restricted Space. One 15 or 20A, single-phase, 125V receptacle can be . . . |
| |
680.22 Area Lighting, Receptacles, and Equipment |
This subsection was revised to read:
(A) Receptacles
(5) GFCI Protection. All 125V receptacles located within 20 ft. of the insid . . . |
| |
680.26 Bonding |
This section was revised to read:
(B) Bonding Together
(1) Metallic Parts of Pool Structure. All metallic parts of the water stru . . . |
| |
690.14 Additional Provisions |
A new subsection was added and it reads:
(C) Requirements for Disconnecting Means. Means must be provided to disconnect all conduct . . . |
| |
690.56 Identification of Power Sources |
A new section was added to Article 690 to cover the identification requirements for photovoltaic power systems supplying buildings, or structures or b . . . |
| |
700.12 General Requirements |
A new subsection was added and it reads:
(B) Generator Set
(6) Disconnect. Where an outdoor-housed generator for emergency circui . . . |
| |
701.11 Legally Required Standby Systems |
This subsection was revised to read:
(E) Connection Ahead of Service Disconnecting Means. Where acceptable to the Authority Having . . . |
| |
702.1 Scope |
The second paragraph was revised to read:
The systems covered by this Article consist of those that are permanently installed, including pr . . . |
| |
702.10 Portable Generator Grounding |
A new section was added for grounding portable generators, which reads:
(A) Separately Derived Systems. If the transfer switch for . . . |
| |
702.10 Portable Generator Grounding |
A new section was added for grounding portable generators, which reads:
(B) Nonseparately Derived System. If the transfer switch fo . . . |
| |
725.3 Locations of Other Articles |
The following requirement was added:
(B) Spread of Fire or Products of Combustion. The accessible portion of abandoned Class 2, Cla . . . |
| |
725.6 Mechanical Execution of Work |
The text to this section was revised to read:
Class 1, Class 2, and Class 3 circuits must be installed in a neat and workmanlike manner. Ca . . . |
| |
800.6 Mechanical Execution of Work |
The text to this section was revised to read:
Communications circuits must be installed in a neat and workmanlike manner. Cables installed . . . |
| |
800.40 Cable and Primary Protector Grounding |
New text was added to improve the grounding of Communications systems, it now reads:
The metallic member(s) of the cable sheath, where requi . . . |
| |
800.52 Locations and Other Articles |
The text to this subsection was revised to read:
(B) Spread of Fire or Products of Combustion. Installations in hollow spaces, ver . . . |
| |
810.21 Grounding Conductors – Receiving Stations |
The text to this subsection was revised to read:(F) Electrode. The grounding conductor as required by 810.14 and 20 must be connected . . . |
| |
820.33 Grounding of Outer Conductive Shield of a Coaxial Cable |
The text to this section was revised to read:
The outer conductive shield of the coaxial cable must be grounded at the building premises as . . . |
| |
820.40 CATV Cable Grounding |
New text was added to improve the grounding of CATV systems, it now reads:
Where required by 820.33, the shield of the coaxial cable shall b . . . |
| |
830.40 Cable, Network Interface Unit, and Primary Protector Grounding |
New text was added to improve the grounding of Network-Powered Broadband Communications systems, it now reads:
Network interface units conta . . . |
| |
Chapter 9, Table 4 Dimensions and Percent Area of Conduit and Tubing |
A 60 percent fill column was added for use with wire fill calculations for conduit or tubing nipples.
Intent: Note 4 to Table 1 of Chapter 9 . . . |
| |
Annex C – Conduit and Tubing Fill Tables for Conductors and Fixture Wires |
A table of contents was added for this table:
Table Page
C1 ― Electrical Metalli . . . |
