 |
90.2 Scope of NEC |
New FPN identifies the type of organizations that may be exempt from the NEC requirements.
(B) What
Isn’t Covered. The
|
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Handhole Enclosure |
New definition “handhole enclosure” was added because the term will be used in the following:
- Enclosure not required for splices, 300. . . .
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Qualified Person |
FPN was added to the definition of ”qualified person” to give examples of the type of safety training required for a person to be considered qualif . . . |
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Separately Derived System |
The definition for a “separately derived system” was revised by eliminating the list of electric energy power sources that constitute a separately . . . |
| |
Supplementary Overcurrent Protective Device |
The new term “supplementary overcurrent protection device’ clarifies the difference between “supplementary overcurrent protective device” and “bran . . . |
| |
System Bonding Jumper |
A new term “system bonding jumper” was added for use with separately derived systems. Previously the term “main bonding jumper” was used to describ . . . |
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Device |
The definition of the term “device” was revised to clarify that electronic and electromechanical equipment used to control electric energy is consi . . . |
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Dwelling Unit |
The definition of a “dwelling unit” was revised to make it consistent with other NFPA standards, like NFPA 101, Life Safety Code, without im . . . |
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Solidly Grounded |
The term “solidly grounded” was contained in 230.95, but it was relocated to Article 100 because it’s used in at least eleven articles.
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Grounding Electrode |
A new term “grounding electrode” was added to Article 100 because it’s used in twenty-three articles from Article 250 through Article 830.
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Grounding Electrode Conductor |
The definition for “grounding electrode conductor” was reworded to clarify that the conductor that connects the building or structure disconnecting . . . |
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Guest Room |
The new term “guest room” was added because it’s used in Articles 210, 220, and 240. The definition matches the term found in NFPA 101, Life Saf . . . |
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110.16 Flash Protection Warning |
The term “meter socket enclosures” was added to the list of equipment on which field marking is required to warn qualified persons of potential ele . . . |
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110.26 Spaces About Electrical Equipment |
Part II. 600V, Nominal or Less
Revised text allows the area housing electrical equipment to be controlled by locks of any type, including a comb . . . |
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200.6 Means of Identifying Grounded Neutral Conductors |
The means of identification of grounded neutral conductors larger than 6 AWG was revised to allow gray as well as white markings at terminations.
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200.7 Use of White or Gray Color |
New sentence added to remove confusion and misinterpretation in the field on the requirements for reidentifying white conductors in cable assemblie . . . |
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210.52 Dwelling Unit Receptacle Outlets |
Part III. Required Outlets
New exception and diagram added to clarify that a countertop receptacle outlet isn’t required on a wall directly behi . . . |
| |
210.52 Dwelling Unit Receptacle Outlets |
A new exception permits the required bathroom receptacle outlet to be mounted on the basin cabinet. This exception provides an alternative location . . . |
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210.52 Dwelling Unit Receptacle Outlets |
New rule requires at least one outdoor receptacle outlet for each grade level dwelling unit with an individual entrance. This will help remove the . . . |
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210.63 Heating, Air-Conditioning, and Refrigeration Equipment (HACR) |
New exception clarifies that a receptacle outlet isn’t required within 25 ft of evaporative coolers at one- and two-family dwellings.
A . . . |
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210.70 Lighting Outlets Required |
Revised text and two new exceptions clarify that lighting outlets in guest rooms or guest suites provided with permanent provisions for cooking mus . . . |
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210.4 Multiwire Branch Circuits |
Part I. General Provisions
New FPN alerts the Code user to ensure that the continuity of the grounded neutral conductor of a multiwire ci . . . |
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210.5 Identification for Branch Circuits |
The requirement for branch-circuit identification was relocated from 210.4(D) to 210.5(C) and the text expanded to require circuit identification f . . . |
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210.7 Branch-Circuit Requirements |
Changing the word “receptacle” to “device or equipment” was intended to bring 210.7 in line with other NEC sections to create more consisten . . . |
| |
210.8 GFCI Protection |
Revised text to require all 15 and 20A, 125V receptacles within 6 ft of the dwelling unit laundry or utility sink to be GFCI protected. This is bec . . . |
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210.8 GFCI Protection |
The GFCI protection requirement for commercial kitchens was clarified by adding a definition of a kitchen. New requirement expands the GFCI protect . . . |
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210.12 Arc-Fault Circuit-Interrupter Protection |
Revised text to require, after January 1, 2008 that all dwelling unit bedroom branch-circuit AFCI protection devices must be listed as a “Combinati . . . |
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215.2 Minimum Rating and Size |
New sentence requires the feeder grounded neutral conductor to be sized so that it has adequate fault-current capacity, in the event a short circui . . . |
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215.12 Identification for Feeders. |
New section contains the identification requirements for feeder conductors so that they are similar with the branch-circuit identification requirem . . . |
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225.17 Masts as Supports |
Part I General Requirements
Overhead feeder and branch-circuit final spans are sometimes attached to the building through the use of masts. This . . . |
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230.71 Number of Disconnects |
Part VI. Service Equipment – Disconnecting Means
The disconnecting means for transient voltage surge suppressors (TVSS) are not counted as a ser . . . |
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230.82 Equipment on the Supply Side |
New subsection permits the installation of a meter disconnect switch ahead of the service disconnect.
Electrical equipment must not be . . . |
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240.20 Ungrounded Conductors |
Part II. Location
The word “approved” was replaced with “identified for the purpose.” The result… nails, screws, or wire are no longer permitted . . . |
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240.21 Overcurrent Protection Location in Circuit |
New sentence confirms that the “next size up” protection device rule of 240.4(B) doesn’t apply to feeder tap conductors.
(B) Feeder Ta . . . |
| |
240.21 Overcurrent Protection Location in Circuit |
New text clarifies that an individual transformer can supply more than a single load and the “next size up” protection of conductor rule contained . . . |
| |
240.24 Location of Overcurrent Protection Devices |
New text specifies the maximum height that an overcurrent device can be installed, and still be considered “readily accessible.” New text coordinat . . . |
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240.24 Location of Overcurrent Protection Devices in Premises |
Overcurrent devices must not be located in bathrooms of guest suites, as well as guest rooms of hotels and motels.
(E) Not in Bathroom . . . |
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250.34 Generators – Portable and Vehicle-Mounted |
Revision clarifies when portable and vehicle-mounted generators are not required to be grounded to a grounding electrode.
(A) Portable . . . |
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250.50 Grounding Electrode System |
Part III. Grounding Electrode System and Grounding Electrode Conductor
The words “if available” have been replaced with “are present.” The effec . . . |
| |
250.52 Grounding Electrodes |
The language in the 2002 NEC was vague and subject to wide interpretation as it described when the metal frame of a building or structure co . . . |
| |
250.52 Grounding Electrodes |
New FPN reminds the Code user that gas piping that is likely to become energized must be ”bonded” in accordance with the 250.104(B).
( . . . |
| |
250.54 Supplementary Electrodes |
Revision to help the Code user understand that an equipment grounding (bonding) conductor is intentionally constructed to assist in clearing . . . |
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250.64 Grounding Electrode Conductor Installation |
New text permits the grounding electrode conductors and bonding jumpers to terminate to a busbar as an alternative method.
(C) Continu . . . |
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250.64 Grounding Electrode Conductor Installation |
The revisions clarify when the raceway for the grounding electrode conductor must be bonded at each raceway/cable termination between the service e . . . |
| |
250.100 Bonding – Hazardous (Classified) Locations |
Part V. Bonding
The text was revised to clarify the bonding requirements of metal raceways that enter a hazardous (classified) location. An addi . . . |
| |
250.104 Bonding of Piping Systems and Exposed Structural Metal |
The words “that may become energized” were replaced with “is likely to become energized” to editorially clarify when the metal piping system, inclu . . . |
| |
250.104 Bonding of Piping Systems and Exposed Structural Metal |
The words “that may become energized” were replaced with “is likely to become energized” to editorially clarify when structural metal must be bonde . . . |
| |
250.2 Definitions |
Part I. General
Additional text helps the Code user understand that the purpose of the effective ground fault current path is to help cle . . . |
| |
250.104 Bonding of Piping Systems and Exposed Structural Metal |
The structural metal member bonding requirements that were located in 250.30(A)(3)(d) and 250.104(A)(1) were combined and relocated to 250.104(D) t . . . |
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250.118 Types of Equipment Grounding (Bonding) Conductors |
Part VI. Equipment Grounding (Bonding) and Equipment Grounding (Bonding) Conductors
New text specifies when an equipment (bonding) conductor is . . . |
| |
250.119 Identification of Equipment Grounding (Bonding) Conductor |
New sentence to make it clear that conductors that have an outer finish that is green or green with one or more yellow stripes cannot be used for u . . . |
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250.122 Sizing Equipment Grounding (Bonding) Conductor |
New rule describes how the equipment grounding (bonding) conductors for feeder taps are to be sized.
(G) Feeder Tap Conductors.
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250.140 Grounding (Bonding) – Ranges, Ovens, and Clothes Dryers |
Part VII. Methods of Equipment Grounding (Bonding)
The section on grounding (bonding) of ranges, ovens, and clothes dryers was rewritten to make . . . |
| |
250.146 Receptacle Grounding (Bonding) |
New sentence clarifies how to ensure direct metal-to-metal contact between the metal mounting yoke of a receptacle and the metal box when a bonding . . . |
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250.4 General Requirements for Grounding and Bonding |
Change clarifies that swift operation of an overcurrent protection device in the presence of a ground-fault depends upon the existence of an effect . . . |
| |
250.8 Termination of Grounding and Bonding Conductors |
Revised text clarifies that terminals for grounding conductors or bonding jumpers must be attached to enclosures in a suitable method to ensure an . . . |
| |
250.24 Grounding and Bonding at Service Equipment |
Part II. System Grounding (Bonding)
Editorial - the term “neutral conductor” was replaced with “grounded conductor.” According to the IEEE Dicti . . . |
| |
250.28 Main Bonding Jumper and System Bonding Jumper |
To avoid confusion when dealing with bonding jumpers, the requirement for the system bonding jumper was added to this section.
System . . . |
| |
250.30 Grounding and Bonding of Separately Derived AC Systems |
Text clarifies the method of sizing equipment bonding jumpers when the separately derived system conductors are run in parallel. And the text relat . . . |
| |
250.32 Buildings or Structures Supplied by a Feeder or Branch Circuit. |
A new sentence was added to the exception to clarify that a grounding electrode isn’t required at a remote building or structure supplied by a sing . . . |
| |
300.4 Protection Against Physical Damage |
Part I. General Requirements
Text expands the requirements to furring strips when 11/4” clearance is required for cables run parallel to framing . . . |
| |
300.6 Protection Against Corrosion and Deterioration |
This section was rewritten to ensure that raceways and fittings are properly protected against corrosion and deterioration. In addition, this secti . . . |
| |
300.11 Securing and Supporting |
Wording added to clarify that independent support wires for electrical equipment and wiring can be attached to the ceiling grid.
(A) S . . . |
| |
300.18 Inserting Conductors in Raceways |
New exception clarifies when raceways aren’t required to be complete before the installation of circuit conductors.
(A) Complete Runs. . . . |
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310.8 Locations |
This subsection was reorganized in a list format to clarify the requirements for protecting conductors against ultraviolet (UV) rays from direct su . . . |
| |
310.10 Insulation Temperature Limitation |
New FPN alerts the designer to consider elevated ambient temperatures when raceways are installed outdoors in direct sunlight in close proximity to . . . |
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310.15 Conductor Ampacity |
Text added to clarify how each current-carrying conductor of a parallel conductor set is to be treated when applying the ampacity adjustment factor . . . |
| |
312.4 Repairing Gaps in Plaster, Drywall, or Plasterboard |
New rule added to require the sealing of gaps or open spaces around cabinets or cutout boxes having a flush-type cover, as is required around outle . . . |
| |
314.1 Scope |
Part I. Scope and General
The scope of Article 314 was expanded to include the requirements for handhole enclosures. See 314.30 for details. . . . |
| |
314.16 Number of 6 AWG and Smaller Conductors in Boxes and Conduit Bodies |
Part II. Installation
New sentence requires conductor volume calculations to be increased in size when conductors are looped or run unbroken thr . . . |
| |
314.20 Boxes Recessed in Walls or Ceilings |
Additional text clarifies the setback requirements for plaster rings, extension rings, or listed extender, as well as boxes from combustible surfac . . . |
| |
314.21 Repairing Gaps Around Boxes |
Additional text clarifies when gaps around boxes must be repaired.
Gaps around boxes recessed in plaster, drywall, or plasterboard h . . . |
| |
314.27 Outlet Boxes |
The support requirements for a ceiling paddle fan previously contained in 422.18 were relocated to 314.27(D). This makes it unnecessary to use two . . . |
| |
314.30 Handhole Enclosures |
New section contains the requirements for handhole enclosures.
Handhole enclosures must be designed and installed to withstand all l . . . |
| |
320.30 Secured and Supported |
Part II. Installation
This section was reorganized with editorial changes to add clarity and uniform interpretation. New subsection (A) General, . . . |
| |
320.80 Conductor Ampacities |
Changes clarify when the 90°C conductor insulation ampacity as listed in Table 310.16, can be used for conductor ampacity adjustment or correction, . . . |
| |
330.30 Secured and Supported |
Part III. Construction Specifications
This section was reorganized with editorial changes to add clarity and uniform interpretation. New subsect . . . |
| |
330.108 Equipment Grounding (Bonding) |
Section rewritten to clarify when Type MC cable is permitted to serve as an equipment grounding (bonding) path.
Where MC cable is us . . . |
| |
334.15 Exposed |
Part II. Installation
New rule permits NM cable in an unfinished basement to be installed into a raceway when coming down a wall, but the cable . . . |
| |
334.30 Secured or Supported |
New paragraph clarifies that NM cables installed within a raceway [334.15(C)] isn’t required to be secured within the raceway.
Type . . . |
| |
334.80 Ampacity |
A new paragraph requires conductors to have their ampacity adjusted, when more than one NM cable is bundled together as they pass through a fire- o . . . |
| |
348.30 Secured and Supported |
Part II. Installation
Revisions to Exception No. 2 relax the requirements for securing flexible metal conduit at terminations where flexibility . . . |
| |
376.23 Wireway Sizing |
Part II. Installation
Revisions to this rule should clear up the issue regarding the sizing of metal wireways as it relates to conductor bending . . . |
| |
400.5 Ampacity of Flexible Cords |
New rule requires conductor ampacity correction when flexible cords are used in an ambient temperature above 86°F.
Tables 400.5(A) and . . . |
| |
404.9 Switch Cover Plates |
Exception revised to permit metal switch cover plates at an outlet box where a grounding (bonding) means doesn’t exist, but only where the circuit . . . |
| |
406.4 Receptacle Mounting |
Text added to recognize the generally accepted practice, that receptacles mounted in boxes supported by a pendant flexible cord is permitted.
. . . |
| |
406.8 Receptacles in Damp or Wet Locations |
The word “outdoors” was deleted from this rule. The effect? All 15 and 20A 125V and 250V receptacles installed in a wet location (indoor or outdoor . . . |
| |
406.8 Receptacles in Damp or Wet Locations |
Revised wording clarifies where a receptacle isn’t permitted in a bathroom.
(C) Bathtub and Shower Space. Receptacles must n . . . |
| |
408.4 Circuit Directory or Circuit Identification |
Part I. General
This section on circuit identification was rewritten to improve safety by ensuring that workers don’t have to guess which breake . . . |
| |
408.7 Unused Openings |
New section specifies that unused openings for circuit breakers and switches must be closed in a manner approved by the authority having jurisdicti . . . |
| |
410.110. Listing of Decorative Lighting |
XVI. Decorative Lighting and Similar Accessories
Decorative lighting is now required to be listed for the purpose.
Decor . . . |
| |
410.1 Scope |
Part I. General
The scope of Article 410 has been expanded to include decorative lighting products, lighting accessories for temporary seasonal . . . |
| |
410.4 Luminaires in Specific Locations |
Part II. Luminaire Locations
The text was modified to clarify the types of luminaires not permitted within 3 ft horizontally and 8 ft vertically . . . |
| |
410.4 Luminaires in Specific Locations |
New subsection added to clarify when a lamp shield for mechanical protection is required for mercury vapor or metal halide lamps.
|
| |
410.14 Connection of Electric-Discharge Luminaires |
Part III. Luminaire Outlet Boxes and Covers
Additional text clarifies that the branch-circuit wiring must be accessible when electric-discharge . . . |
| |
410.30 Cord-Connected Luminaires |
Part VI. Wiring of Luminaires
Additional text clarifies that flexible cords with manufactured wiring system connectors (Relox®) can be used for . . . |
| |
410.73 General |
Part XIII. Electric-Discharge Lighting (1,000V or Less)
New rule specifies when luminaires with metal halide lamp are to be provided with a meth . . . |
| |
422.13 Storage Water Heaters |
Part II. Branch-Circuit Requirements
Text was revised to specify that a fixed storage water heater of 120 gallons or less is to be considered a . . . |
| |
422.16 Flexible Cords |
New rule allows range hoods to be cord-and-plug connected, if they comply with new stringent requirements.
(B) Specific Appliances.< . . . |
| |
424.3 Branch Circuits |
Part I. General
Editorial change to clarify that fixed electric space-heating equipment is a continuous load for branch circuit conductor sizing . . . |
| |
430.32 Overload Sizing – Continuous-Duty Motors |
Part III. Overload Protection
Text revised to clarify that overload protection is required for continuous duty motors rated more than 1 hp, but . . . |
| |
445.18 Disconnecting Means |
Change permits a single generator to have multiple disconnecting means to allow flexibility and to provide a safer environment when maintenance is . . . |
| |
501.15 Sealing and Drainage |
Part II. Wiring
Text revisions clarify that when a conduit leaves a Class I, Division 2 location to an unclassified location, the required bound . . . |
| |
511.3 Classification of Hazardous Areas |
This section was reorganized so that text related to unclassified locations is now located in 511.3(A) and text related to classified locations is . . . |
| |
511.3 Classification of Hazardous Areas - Continued |
(6) Flammable Liquids Having Flash Points Below 100 degrees F. Areas where flammable liquids having a flash point below 100°F, such as gasoline . . . |
| |
513.12 GFCI Protected Receptacles |
New section requires GFCI protection for 15 and 20A, 125V receptacles where aircraft might undergo service, repairs, or alterations.
|
| |
514.8 Underground Wiring |
Note added to Table 514.3 to identify the hazardous (classified) area around fuel dispensing facilities on floating docks.
Text revised to clari . . . |
| |
517.18 General Care Areas |
Part II. Wiring and Protection
Additional text expands the required use of tamper resistant receptacles or tamper resistant covers in pediatric . . . |
| |
525.23 GFCI Protection |
This section was extensively rewritten to clarify where GFCI protection is required, where GFCI protection is not required, and where GFCI protecti . . . |
| |
547.5 Wiring Methods |
The rules for GFCI protection of receptacles were relocated from 547.10(B) to 547.5(G). In addition, general-purpose receptacles located in dirt co . . . |
| |
547.10 Equipotential Planes and Bonding of Equipotential Planes |
Section revised to clarify when an equipotential plane is required in livestock buildings. Previous Codes required an equipotential plane where met . . . |
| |
551.71 Type of Receptacles Required |
VII. Recreational Vehicle Parks
Text revised to increase the number of 50A, 125/250V receptacle recreational vehicle sites from 5 percent to 20 . . . |
| |
555.22 Repair Facilities |
Electrical wiring and equipment at facilities used to repair marine craft must now comply with the installation requirements of Article 511 Commerc . . . |
| |
590.4 General |
Revised text clarifies that Type NM cable used for temporary feeder installations isn’t limited by building height, construction type, or concealme . . . |
| |
590.4 General |
New exception recognizes that in many cases the only available support for holiday branch circuit lighting is live vegetation (trees).
< . . . |
| |
604.6 Construction |
The title and text of this section were changed to require manufactured wiring systems to be secured, as well as supported, in accordance with the . . . |
| |
680.26 Equipotential Bonding |
Equipotential grid now required in or under the permanently installed pool, outdoor spa, and outdoor hot tub deck to help mask stray voltage from u . . . |
| |
680.32 GFCI Protected Receptacles |
Part III. Storable Swimming Pool
Additional text requires GFCI protection for receptacles located within 20 ft of a storable pool.
|
| |
680.34 Receptacle Locations |
Additional text to specify the minimum distance a receptacle is permitted from a storable pool.
Receptacles must not be located less . . . |
| |
680.58 GFCI Protected Receptacles |
Part V. Fountains
The GFCI protection requirement for 15 or 20A receptacles within 20 ft of fountains was relocated to this section from 680.22( . . . |
| |
680.12 Maintenance Disconnecting Means |
This rule was revised to clarify that the permanently installed pool, storable pool, outdoor spa and hot tub, or fountain equipment maintenance dis . . . |
| |
680.22 Area Lighting, Receptacles, and Equipment |
Text added to clarify that GFCI protection is only required for 15 and 20A, 125V receptacles located within 20 ft of the inside walls of a permanen . . . |
| |
680.26 Equipotential Bonding |
Change requires an equipotential bonding grid be installed to reduce voltage gradients in and around permanently installed pools, outdoor spas, and . . . |
| |
695.6 Power Wiring |
The text was revised to alert the Code user that the branch circuit conductors for a fire pump motor are sized in accordance with 430.22. In . . . |
| |
725.3 Other Articles |
Part I. General
Text revised to specify that accessible portions of abandoned Class 2, Class 3, and PLTC cables must be removed.
. . . |
| |
725.3 Other Articles |
Changes clarify the types of cables and raceways permitted in ducts, plenums, and other space used for environmental air.
(C) Ducts, . . . |
| |
725.61 Applications of Class 2 and Class 3 Cables |
New sentence identifies the type of nonmetallic raceway containing Class 2 or Class 3 cables that is permitted in “other spaces used for environmen . . . |
| |
725.82 Listing and Marking of Class 2 and Class 3 Cables |
Part VI. Listing Requirements
New subsections added to recognize the use of raceways designed for Class 2 and Class 3 cables.
. . . |
| |
760.3 Other Articles |
Part I. General
Text revised to specify that accessible portions of abandoned fire alarm cables must be removed.
Only those sectio . . . |
| |
760.21 GFCI and AFCI Protection |
Part II. Nonpower-Limited Fire Alarm (NPLFA) Circuits
New rule prohibits AFCI protection of the 120V circuit that supplies power for a nonpower- . . . |
| |
770.3 Other Articles |
Part I. General
Text revised to specify that the accessible portion of abandoned optical fiber cables must be removed.
(A) Spread . . . |
| |
800.3 Other Articles |
Part I. General
Text revised to specify that the accessible portion of communications cables must be removed.
(C) Spread of Fire . . . |
| |
800.100 Cable and Primary Protector Grounding |
Part IV. Grounding Methods
New FPN alerts the Code user that limiting the length of the grounding conductor for the primary protector sho . . . |
| |
810.21 Grounding Conductors |
Part II. Receiving Equipment − Antenna Systems
New subsection clarifies the type of grounding electrode termination fitting that is suitab . . . |
| |
820.3 Other Articles |
Part I. General
Text revised to clarify that the accessible portion of abandoned coaxial cables must be removed.
(A) Spread of Fi . . . |
| |
820.100 Cable Grounding |
Part IV. Grounding Methods
New FPN alerts the Code user that limiting the length of the grounding conductor should reduce voltages that m . . . |
| |
820.182 CATV Raceways |
Part VI. Listing Requirements
New subsections added to recognize the use of raceways designed for coaxial cables.
(A) P . . . |
| |
830.1 Scope |
Part I. General
Article 830 contains the installation requirements for network-powered broadband communications circuits that provide voice, aud . . . |
