PRESENTED BY THE ELECTRICAL

Name: PRESENTED BY THE ELECTRICAL
Uploaded: 2017-07-13T14:22:38+00:00
Duration: PTM34S10
Description: PRESENTED BY THE ELECTRICAL

PRESENTED BY THE ELECTRICAL
4 HOUR 2008 NEC CODE CHANGES PRESENTED BY THE ELECTRICAL TRAINING CENTER IN-SERVICE TRAINING #

Article 100, Entire Code Grounding and bonding terms have been redefined and simplified for clarity and improved usability. 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 4/17/2017

Photo: IAEI Archives

4/17/2017

Photo: IAEI Archives 4/17/2017

Article 100 – Ground Ground. The earth.
The term ground has been revised and simplified for clarity and improved usability. 4/17/2017

Article 100 – Ground The earth 4/17/2017

Article 100 Grounding Electrode
Grounding Electrode. A conducting object through which a direct connection to earth is established. 4/17/2017

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 an area to qualify as a kitchen. 4/17/2017

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. 4/17/2017

Chapter Two Wiring and Protection 4/17/2017

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. 4/17/2017

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. 4/17/2017

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. 4/17/2017

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 ground-fault 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. 4/17/2017

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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. 4/17/2017

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. Comments from Comment responding to “Explanation of Negative” comments from CMP-2 members on Proposal which expanded AFCI requirements in dwelling unit for the 2008 NEC. Log #2192 NEC-P02 Final Action: Accept in Principle in Part (210.12(B)) _____________________________________________________________ Submitter: Vince Baclawski, National Electrical Manufacturers Association (NEMA) Comment on Proposal No: 2-142 Recommendation: Continue to Accept the Proposal as submitted. Substantiation: As noted in the substantiation, it is time to expand the use of AFCI. This comment is intended to address the comments with the negative votes by Mr. Becker, Mr. Brown, Mr. Nenninger, and Mr. Purvis. Mr. Becker questions the reliability of AFCIs and whether there is enough data on the effectiveness of AFCI to justify expansion. There are over 20,000,000 AFCI in service and the number grows daily. This is a large base and manufacturers are not aware of reliability issues and Mr. Becker does not present any data supporting his claim of a reliability issue nor has he provided any information to the manufacturers supporting this claim. Relative to the effectiveness of AFCI, there are situations where AFCIs are detecting arcing situations and protecting the circuit. The devices are functioning and are effective. Mr. Becker states that substantiation must provide a demonstrable link between the present installation of AFCIs in bedrooms and a reduction of fires before expansion. The effort to quantify a reduction in fires and the use of AFCI will forever be difficult (as it would be with other products) and code making bodies have been careful over the years not to withhold advancements in safety for this type of justification. AFCIs do detect arcing situations that if not detected could develop into dangerous situations where a fire could occur. The branch/feeder devices introduced in the 2002 Code provided a significant improvement in safety and the change to combination devices in 2008 will increase this safety level further. AFCI technology is relatively new and will continue to develop and increase the level of safety. Mr. Becker questions whether AFCIs provide any protection beyond that provided by a standard circuit breaker. AFCI devices function in a range of protection outside of that provided by standard circuit breakers so there is no question that there is additional protection beyond what is provided by a standard circuit breaker. Combination devices function to detect arcing situations well below the handle rating of the circuit breaker. Mr. Becker raised a question about installing GFCIs on branch circuits protected by AFCIs but it is unknown what the issue or question is. GFCIs can be, and have been, installed on the same circuit since AFCIs were introduced. There is no issue and, indeed, some AFCIs have been designed to include 5ma GFCI protection. Mr. Brown’s negative comments indicate that the issue is purely dollars and cents. He does not seem to question that AFCIs provide additional safety, but questions whether the increased safety is worth the cost. It should be noted that home builders took similar positions when GFCI and smoke alarm requirements were introduced. The same argument is occurring presently with sprinkler protection for dwellings. If all of these issues were viewed only as a dollars and cents issues, we would not have many of the safety improvements we have today. If one applied this same type of analysis as justification for overcurrent protection of circuits, you would arrive at the conclusion that there is no justification for having any overcurrent protection - fuse or circuit breaker - on every circuit. A circuit breaker trip in a dwelling is relatively rare and the number of trips relative to the number installed is infinitesimally low. The same type of dollars and cents analysis would likely show that GFCI and smoke detectors were not justified. If homeowner’s insurance was evaluated on the same basis that Mr. Brown uses, the numbers would probably indicate that the cost of insurance far exceeds the losses and, therefore, no one should purchase insurance. Mr. Brown notes that until data is available to indicate that AFCIs are directly related to saving society monetary loss that AFCIs should not be required. That logic would result in codes and standards that would have no safety provisions. Mr. Nenninger questions the timing of expansion. AFCIs have been required in the 2002 and 2005 Code so there is significant experience with the devices (20,000,000+ installed). It is true that the 2008 Code will require a new type of device with expanded safety, but that does not justify not moving forward with expansion of AFCI. Mr. Purvis comments that field problems, manufacturer recalls, nuisance trips, and lack of support are reasons to not include AFCI in the NEC. Relative to field problems there have been some trips with AFCI and while many of these were due to actual arc faults there have been some trips that can be attributed to improper wiring or a specific issue with a connected load. In the instances where there was a question about utilization equipment, AFCI manufacturers have responded to these and made adjustments to the AFCI, if possible and warranted, and the result has been that there are few actual unwanted trip issues reported today. When GFCIs were first introduced, there were numerous complaints of nuisance trips (any trip is a nuisance and many of these were valid trips due to ground faults) but what if GFCI were never added to the Code because of perceived nuisance tripping issues? Relative to recalls, there was a single AFCI recall from one manufacturer. Although this was due to the specific performance of a component and not the AFCI design, the manufacturer responded quickly and effectively. It should also be noted that in this instance the push-to-test function of the AFCI did exactly as it was supposed to do and indicated that the device had a problem with the arc detection function. The idea that a product recall means that the concept should be removed from the market is not logical. None of us would have an automobile today under this concept. The issue of local adoption is indicated as lack of support and, therefore, somehow important in including this in the Code. Local adoption is many times driven for reasons other than safety - e.g., politics - and should not be an issue in what the NEC does. It is also noteworthy that far more jurisdictions have adopted AFCI than those that have not. The need for AFCI in new houses is questioned because of improvements in wiring. Wiring practices do continue to improve, but unintended things happen in new installations. Systems also continue to age and they are often modified. A perfect installation where nothing goes wrong with the wiring and the loads would not need a circuit breaker or fuse to protect the circuit, but it is understood that the system needs protection against various modes of faults that can occur. The AFCI is an extension of this safety. Panel Meeting Action: Accept in Principle in Part Panel Statement: See panel action and statement on Comment 2-85. Ballot Results: Affirmative: 9 Negative: 3 4/17/2017 47

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. 4/17/2017

Wiring Methods and Materials
Chapter Three Wiring Methods and Materials 4/17/2017

4/17/2017

4/17/2017 Photo: IAEI Archives

4/17/2017

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. 4/17/2017

Equipment for General Use
Chapter Four Equipment for General Use 4/17/2017

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. 4/17/2017

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406.4(G) Voltage Between Adjacent Devices
A new subdivision (G) covering voltage between adjacent receptacles has been added to Where voltages between adjacent receptacles in ganged enclosures exceed 300, identified and securely fastened barriers are required between the devices. 4/17/2017

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. 4/17/2017

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. 4/17/2017

suitable for installations in clothes closets.
Listed LED luminaires suitable for installations in clothes closets. 4/17/2017 Photos: Courtesy Of Ardee Lighting

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. 4/17/2017

4/17/2017

Photo: IAEI Archives Thomas and Betts

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. 4/17/2017

422.52 Electric Drinking Fountains
Electric drinking fountains shall be protected with ground-fault circuit-interrupter protection. Bottled water coolers are not affected by this rule. 4/17/2017

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. 4/17/2017

Chapter Five Special Occupancies 4/17/2017

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. 4/17/2017

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. 4/17/2017

517.32(C)(3) Alarm and Alerting Systems
Section (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. 4/17/2017

Chapter Six Special Equipment 4/17/2017

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. 4/17/2017

Photo: IAEI Archives 4/17/2017

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. 4/17/2017

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). 4/17/2017

Chapter Seven Special Conditions 4/17/2017

Communications Systems
Chapter Eight Communications Systems 4/17/2017

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. 4/17/2017

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. 4/17/2017

THINK SAFETY THE END

PRESENTED BY THE ELECTRICAL

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