Does Nec Require Noalox On Service 2017
Part 2 will encompass proposed changes located in Chapters 4 through 8 of the NEC. Equally stated previously in Part 1, in that location were 4,012 public inputs (PI) submitted to the National Fire Protection Association (NFPA) recommending changes from the 2014 NEC to the 2017 NEC. From those public inputs, 1,235 Beginning Revisions (FR) were created past the different code-making panels (CMP). Nether the new NFPA Lawmaking development system, these first revisions are the proposed changes to the next edition of the NEC and are created based primarily on the acted upon PIs. There were four new articles proposed and accustomed for the 2017 NEC equally we detailed in Office one.
Chapter Iv – Equipment for General Apply
New: 404.22 – Electronic Lighting Control Switches
A new provision was proposed requiring all electronic lighting command switches to be listed. This new provision goes on to prohibit these electronic lighting control switches from introducing current on the equipment grounding conductor during normal functioning. This proposal would have a futurity effective date of January ane, 2020. Department 404.two(C) mostly requires a grounded (neutral) usher to be installed at switch locations that command lighting loads. When CMP-9 initiated 404.ii(C) in the 2011 NEC, it was intended to begin a process that would ultimately issue in no current beingness intentionally introduced onto the equipment grounding system every bit a result of the installation of electronic switching devices, such as an occupancy sensor. Currently, existing listed products, per the manufacturer'south instructions, direct the installer to utilize the "green" or bare equipment-grounding usher to be connected to the device to act as the grounded usher to ability the electronics with 120 volts. The equipment-grounding usher should not exist used to complete this excursion under whatever circumstance. This proposed new section would crave the insulated grounded conductor to be installed and used with the proper listed electronic device. The future effective appointment provides the manufacturers a reasonable time frame to produce these switching devices with grounded conductor compatibility while being able to utilise existing inventory.
New: 406.3(F) – Receptacle with USB Charger
New provisions accept been proposed for Commodity 406 pertaining to 125-volt 15- or 20-ampere receptacles that additionally provide Class 2 power in the course of a USB charger. These new provisions require these devices to be listed and constructed such that the Class 2 circuitry is integral with the receptacle. Currently, Commodity 406 contains requirements for an assortment of unlike types of receptacles—such as an isolated-basis blazon receptacle, conditions-resistant and tamper-resistant blazon receptacles—just no provisions be requiring a receptacle providing power to Class 2 equipment to be listed. Outlet devices consisting of a Grade ii ability supply and Form 2 output connector(s) are presently readily available to the public. Some of these assemblies are intended to be secured and directly connected to a duplex receptacle. The combination of the Class 2 assembly and duplex receptacle has non been investigated to national standards. The product standard for receptacles, ANSI/UL 498, Attachment Plugs and Receptacles, corresponds to the required structure and to the performance requirements to evaluate the suitability of a receptacle with integral power supply with Class 2 output connectors. Requiring the employ of a listed receptacle with an integral power supply with Grade two output connectors will confirm that the installed device complies with the appropriate product standard.
Revision: 406.12 – Tamper-Resistant Receptacles
The requirements and locations for tamper-resistant receptacles accept been proposed to exist expanded. Currently, tamper-resistant receptacles are required at dwelling units, invitee rooms and guest suites of hotels and motels, and in child care facilities. The proposed expansion would bring these prophylactic devices to preschools and elementary education facilities; business offices, corridors, waiting rooms and the like in clinics, medical and dental offices and outpatient facilities; to associates occupancies such every bit places of pending transportation, gymnasiums, skating rinks, auditoriums; and to dormitories. These expanded locations are areas that small children frequently occupy. The current exception will also be extended to these new locations. Tamper-resistant (TR) receptacles are currently limited to nonlocking-type 125-volt, 15- and twenty-ampere receptacles. In the proposed new text, "125-volt" has been removed to include all non-locking 15- and xx-ampere receptacles (not just 125-volt rated). Another interesting change to the tamper-resistant receptacle requirements is a reference to 550.13, also as to 210.52 for areas of the dwelling unit where tamper-resistant receptacles are required. This will clarify that tamper-resistant receptacles are, indeed, required in mobile and manufactured homes.
Revision: 408.3(A)(2) – Barriers at Service Panelboards, Switchboards, and Switchgear
Panelboards take been added to the blazon of service equipment, along with switchboards and switchgear, that will crave barriers to exist placed in these service enclosures to prohibit uninsulated, ungrounded service busbars or service terminals from existence exposed to inadvertent contact past persons or maintenance equipment while servicing load terminations. Access to uninsulated live parts on the line side of a service disconnect within panelboards has been identified equally a rubber concern for several Code cycles. The proposed addition of panelboards would introduce a level of isolation from service-side uninsulated live parts for service panelboards in a manner similar to that currently afforded service switchboards and switchgear. Providing such protection is more readily achieved for those panelboards designed for a single-service disconnect, only is less practical for panelboards designed for multiple-service disconnects. With this in mind, the proposed exception would exempt this barrier provision for service panelboards with provisions for more one service disconnect within a single enclosure as permitted by 408.36, Exceptions 1, two, and three. This revision is intended to complement the new construction requirement in UL 67, Panelboards, and address the safe concern of access to ungrounded, uninsulated live parts. This requirement for barrier-blazon panelboards has been in place for Canadian service equipment for many years. This will now let an "electrically condom work condition," as defined in NFPA 70E, to exist established when performing electrical piece of work in service equipment while energized.
Photo two: Service panelboards with barriers for Canadian service equipment.
Photo courtesy of Square D/Schneider Electric.
New: 409.23 – Available Error Electric current (Industrial Command Panels)
New provisions were proposed for a field marking requirement for industrial command panels indicating the bachelor fault current. This proposed field marking would exist similar to the bachelor mistake-current field marking requirements of 110.24(A). If this provision is successful, whenever an industrial command panel was marked with a short-circuit current rating in accord with 409.110(iv), the available short-circuit current at the industrial control panel and the date the short-circuit current calculation was performed would be required to exist documented and made available to those authorized to audit the installation. Typically, listed industrial control panels are being properly marked with the brusk-circuit current rating past the manufacturer, but in that location is currently no information on the job site equally to the available short excursion at the industrial control panel for the authority having jurisdiction to assure that the equipment is properly sized and being properly protected.
Revision: 422.16(B)(2) – Congenital-In Dishwashers
A built-in dishwasher is allowed to exist cord- and plug-continued. Proposed revisions would allow only the receptacle outlet for a cord- and plug-connected dishwasher to be located in the space next to the dishwasher. Current provisions volition allow this receptacle outlet to be placed in the same space equally the dishwasher or in the space adjacent to the dishwasher. UL Product Standard 749, Household Dishwashers, was referenced as the chief reason for this proposed modify. UL 749 requires the receptacle outlet to be installed in a location next to the dishwasher and will not let this receptacle outlet in the same infinite as the dishwasher, as the present edition of the NEC allows. This production standard also calls for a receptacle outlet to exist installed within 1.83 chiliad (6 ft) of the appliance. With this in heed, it was proposed to lengthened the cord for a congenital-in dishwasher from 0.9 yard to 1.2 m (3 ft to four ft) to 0.9 m to 2.0 yard (3 ft to 6½ ft), measured from the face of the attachment plug to the plane of the rear of the appliance. Some will argue that this "adjacent space" requirement will often lead to the cord passing through a chiffonier divider or wall and would be in disharmonize with requirements in 400.viii that will not allow a flexible cord to be run through walls. This ane will be interesting to sentinel throughout the 2017 NEC development process.
Revision: 445.eleven – Marking (Generators)
In improver to the nameplate information currently required for a generator, the mark and nameplate requirements for all stationary generators and portable generators rated more than 15 kW take been proposed to be revised to include non just the power cistron, the subtransient, and the insulation system grade simply also the transient reactances, and the maximum short-excursion current. The term transient reactances was inverse from "transient impedances" to provide the correct industry term. Having the generator marked with the maximum short-circuit current rating volition aid the enforcement community besides every bit the installer when verifying proper overcurrent protection in the field. According to CMP-thirteen, newer generators are beingness manufactured with inverter-based designs. Determining mistake-current ratings for these generators is difficult and is all-time marked on the generator past the manufacturer. Stationary and portable generators volition besides be required to exist marked to bespeak if the generator is protected confronting overload by inherent design, an overcurrent protective relay, excursion billow, or fuse. This information volition assistance the authorization having jur-isdiction (AHJ) in determining compliance with 445.13 for the ampacity of the conductors.
Affiliate Five – Special Occupancies
Relocation: 500.ii – Definitions: Hazardous (Classified) Locations
The existing definitions presently located at 500.two have been proposed to be relocated to Commodity 100 to comply with the NEC Style Manual, which states that a definition used in two or more articles is required to exist located in Article 100. Some of these definitions are already located in Article 100 and duplicated at 500.two. Other definitions that applied to two or more manufactures in Articles 501 through 516 were placed at 500.2 for convenience to the users of these chancy (classified) location manufactures; this placement as well violates the NEC Style Manual. Some in the electrical industry volition argue that definitions that are merely applicable to NEC Chapter 5 need to remain within the .2 sections within the articles in Affiliate 5 and then that the information needed for the hazardous location user is readily available, since these users typically don't get too far outside of NEC Chapter 5. This will be another interesting change to follow during the 2017 NEC Code evolution process.
Revision: 501.10(B)(1) – Wiring Methods for Class I, Partitioning 2
The wiring methods permitted for Class I, Sectionalisation 2 locations take been proposed to be expanded to include rigid metal conduit (RMC) and intermediate metal conduit (IMC) with listed threadless fittings, forth with the improver of electric metallic tubing (EMT) with listed fittings. According to CMP-14, these wiring methods provide an appropriate level of safety for a Class I, Division 2 location. There seems to exist little validation for currently requiring just threaded couplings and fittings for RMC and IMC in Form I, Division ii locations since the present Code requirements allow cables with threadless fittings to be installed in Class I, Division two locations. EMT was added as this wiring method offers greater physical protection than some of the wiring methods currently allowed at 501.10(B)(1). Sealing with threaded connections at the Class I, Division two boundaries is already addressed at 501.xv(B)(two). Cablebus was also proposed to be added every bit information technology provides a level of rubber equivalent to the other wiring methods permitted for Class I, Division 2 locations. According to the substantiation, cablebus is similar to installed cable tray with spacing on the conductors. Cable tray is already allowed in a Course I, Division 2 location, so cablebus with insulated cables should be an allowed wiring method likewise.
New: Tables 511.three(C) and 511.3(D) – Tables for Major and Minor Repair Garages
Two new tables have been proposed to exist added at 511.3. These tables incorporate detailed information on the extent of the classified locations for major and minor repair garages with heavier-than-air fuel and the extent of classified locations for major repair garages with lighter-than-air fuel, respectively. In order to align with NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, 511.3(C) and 511.iii(D) are proposed to exist replaced respectively in their entirety with a new 511.three(C) roofing both major and minor repair garages where heavier than air gaseous Class I liquids are transferred or dispensed, and a new 511.three(D) roofing major repair garages where vehicles using lighter than air gaseous fuels are repaired or stored. These new tables are replicas of the corresponding portions of Table 8.3.2 of NFPA 30A. These tables are similar in structure to the tables in Article 514 and should provide the same "user-friendly" format equally their Article 514 counterparts.
Revisions: 517.two – Definitions: Health Care Facilities
Several definitions for health care facilities were proposed to be updated to match recent changes to definitions in NPFA 99, Wellness Care Facilities Lawmaking, and to update extracted material references. One of the more interesting revised definitions was to the term, Health Care Facilities. This term at present volition include buildings, portions of buildings, or "mobile enclosures" in which human medical, dental, psychiatric, nursing, obstetrical, or surgical care are provided. Previously, it was hard to include a mobile recreational vehicle (RV) or a mobile home being used on a temporary footing equally a medical health care facility because "mobile enclosures" were not in the definition of a health care facility. For the 2015 edition of NFPA 99, the list of examples of occupancies that may qualify every bit a health care facility was removed, resulting in the same alter in NEC Article 517. A new informational note has been proposed to follow the definition of "Health Care Facilities" equally this list is valuable to installers and inspectors in identifying certain types of occupancies that may qualify and require compliance with Commodity 517.
Revision: 517.31(B) – Essential Electrical Systems Transfer Switches
Revisions to 517.31(B) [previously 517.30(B)(ii)] take proposed that the transfer equipment for all three branches of the essential electrical organisation of a health intendance facility see the emergency system requirements in 700.5(A), (B), and (C) where commercially available. Current Code text requires merely the transfer equipment for the life safety branch to meet requirements of Article 700 for emergency systems (run across 517.26). Transfer switch malfunctions are a huge concern when essential electrical systems fail. Assuring that all transfer switches of all of the branches of the essential electric system come across the same requirements equally emergency systems found in other types of occupancies will aid the health intendance facility'south essential electrical system protect patients and health intendance personnel during times of emergencies and/or disasters.
Affiliate Six – Special Equipment
New: 600.34 – Photovoltaic (PV) Powered Signs
A new section and a new definition have been proposed to be added to Commodity 600 to embrace signs that are powered by a solar photovoltaic (PV) system. These types of signs are defined as a complete sign powered by solar energy consisting of all components and subassemblies for installation either as an off-filigree stand-lone, on-grid interactive or non-filigree interactive system. The installation rules for the PV arrangement are found in Article 690. Signs are a special application of PV equipment requiring special installation instructions. These PV-powered signs are described and covered by UL Standard 48, Electric Signs, Section 4.4.4.12. This new section of NEC Article 600 will provide rules for field wiring and the installation and safe usage of PV-powered signs. This department is also intended to harmonize Commodity 600 with Article 690 and the end utilize of PV signs constructed per UL 48.
Deletion: Tabular array 680.10 – Minimum Comprehend Depths – Pond Pools
Do the requirements for underground wiring related to pond pools located in 680.10 utilise outside the i.5 m (5 ft) radius of a pond pool? These and other questions have been proposed to exist answered equally Section 680.10 (now proposed to exist 680.11) has been revised to clarify which hole-and-corner wiring can or cannot be installed under and effectually swimming pools. This also clarifies that the wiring methods underground near swimming pools must exist installed in a manner to withstand the conditions unique to the pool environs, and that only wiring related to swimming pools may be run under the pool to feed such things as underwater moisture-niche luminaires, etc. The revised text resolves some maybe conflicting language stating that only pond pool-related wiring may be installed underground within one.5 m (5 ft); so in the adjacent judgement, 680.10 permits other wiring within the one.five g (five ft) zone express to puddle-related wiring. CMP-17 determined that all underground wiring should be installed per the burial depths of Table 300.v, thus eliminating the requirement for Table 680.x.
New: Article 680 Part 8 – Electrically Powered Pool Lifts
A new Part VIII and a new definition accept been proposed to address an always growing concern for safety involving electrically powered pool lifts being installed all across the country around swimming pools, spas, and hot tubs. The proposed definition is: Electrically powered pool lifts are an electrically powered elevator that provides accessibility to and from a pool or spa for people having disabilities. Installation of these pool lifts has been occurring, and continues to occur, all across the country for compliance with Department of Justice and Building Code requirements. These lifts allow persons with disabilities to have access to public pools, spas, and hot tubs. This equipment is currently beingness installed without compliance to electric current NEC requirements, such every bit equipotential bonding. This proposed new part to Commodity 680 attempts to permit a compliant installation with adequate condom requirements for all swimming pool users, and would cover such things every bit listing and labeling requirements, GFCI protection for personnel, bonding requirements, switching devices, and nameplate data and requirements.
Revision: 690.8(A)(i) – Calculation of Maximum PV Source Circuit Current
Proposed revisions to the calculation methods for photovoltaic (PV) systems would let engineering supervision to be used in calculating maximum source circuit current for PV systems with a generating capacity of 100 kilowatts or greater. Current provisions only allow this current to be calculated by the sum of parallel PV module rated curt-circuit currents multiplied past 125 per centum. The substantiation of this revision points out that an engineer qualified to pattern PV systems is capable of making the necessary calculations or running the necessary simulations to develop accurate maximum excursion currents of PV source circuits based on the specifics of an installation location. While the use of short-circuit electric current method as the maximum current is still allowed, recent improvements in basis-error protection could make the use of short-circuit current as the maximum electric current an obsolete concept. The new proposed text allowing the calculated maximum electric current value using the engineering supervision method is non permitted to be less than 70 percent of the value calculated using rated curt-excursion currents methods.
New: 695.15 – Surge Protection for Fire Pumps
A new provision was proposed for fire pumps that would crave a listed surge protection device to be installed in or on the fire pump controller. A surge protection device (SPD) is necessary to provide protection for the fire pump controller. According to the substantiation for this new SPD requirement, a study titled, "Information Assessment for Electrical Surge Protective Devices" commissioned by the NFPA Fire Protection Research Foundation, showed that 12% of the burn down pumps tested had impairment due to voltage surges. Much of this impairment could accept been prevented with properly sized surge protective devices. With fire pumps beingness then critical for life-rubber, SPDs are a small price to pay to ensure these precarious devices remain in good working condition.
Chapter Vii – Special Conditions
New: 700.3(F) – Temporary Source of Power for Maintenance or Repair of the Alternate Source of Power for Emergency Systems
New prescriptive linguistic communication was proposed to exist added to 700.3 detailing requirements, along with an exception, that recognizes whether a permanent switching means to connect temporarily an alternate source of power (such as a generator) is or is non required. If the emergency system relies on a single alternate source of power and this system must be disabled for maintenance or repair, the emergency system must include permanent switching ways to connect a temporary alternate source of ability for the duration of the maintenance or repair. The existing concluding paragraph in 700.4(B) provides a performance-based requirement for a portable or temporary alternating source to exist available whenever the emergency generator is out of service for "major" maintenance or repair. The term major is very subjective, and no prescriptive requirements currently be for this situation. Minor maintenance such every bit an oil change would not be considered major maintenance but could disable a generator source for several hours.
New: 700.25 – Branch Circuit Emergency Lighting Transfer Switch
A new department was proposed to exist added to Article 700. This would permit emergency lighting loads supplied by branch circuits, rated at not greater than 20 amperes, to be transferred from the normal branch circuit to an emergency co-operative circuit using a listed branch-circuit emergency-lighting transfer switch. This provision goes on to clarify that the mechanically held requirements of 700.5(C) are not to apply to listed branch-circuit emergency-lighting transfer switches. This addition is intended to accommodate a new class of transfer switching devices intended for performance of individual branch circuits in an emergency lighting system.
During the 2011 Code bicycle, 700.24 (now 700.25) was added to the NEC. This section covers the requirements for automatic load control relays (ALCR). The section specifically states: "The load control relay shall not be used as transfer equipment." These devices are evaluated in accordance with UL 924, Standard for Emergency Lighting and Power Equipment. These ALCRs were never intended for apply as full general-purpose transfer equipment, even though these devices fall within the NEC definition of transfer equipment.
Currently, listed ACLRs with transfer features are being installed in the field in violation of current NEC 700.25. Near of these devices have undergone no evaluation equally emergency transfer switches. These devices, along with transfer-capable ALCRs, are now being listed and evaluated under UL Product Standard 1008, Transfer Switch Equipment as "Co-operative Excursion Emergency Lighting Transfer Switches" (BCELTS).
BCELTS devices will now exist evaluated for comparable performance and structure requirements as those applied to traditional emergency-transfer switches when used on co-operative circuits rated up to 20 amperes.
Revision: 770.24 – Mechanical Execution of Work: Optical Fiber Cables
Revisions to 770.24 were proposed to require protection against physical damage to optical cobweb cables in accordance to all of 300.4—non just 300.four(D) through (K) equally is currently required. The text was as well revised to reference 300.4 in its entirety equally optical fiber cables need to be protected from all sources of damage. This revision is necessary with the ever expanding use of optical fiber cables in critical circuits such as burn alert, and not merely in communications circuits. Concrete protection requirements will now apply to areas such as bored holes structural joints in conjunction with optical fiber cables. The concluding sentence of 770.24 was besides revised by adding "in accordance with 800.170(C)."
The NEC reader/user should be alerted to the additional listing information for nonmetallic cable ties for utilise in other space used for ecology air (plenums) contained in 800.170(C). Some of these aforementioned revisions were proposed for 800.24, 820.24, and 830.24.
Chapter 8 – Communication Systems
Revision: 840.48 – Unlisted Wires and Cables Entering Buildings for Premises-Powered Broadband Communications Systems
In lodge to expand the coverage of Commodity 840, in that location is a proposal to recognize both twisted pair and coaxial cable-based systems in addition to optical fiber-based systems. In addition to the current reference to 770.48 for installations of unlisted optical fiber cables entering buildings, new references accept been added for 800.48 unlisted communications wires and unlisted multi-paired communications cables inbound buildings, and 820.48 for unlisted coaxial cables inbound buildings.
The term optical network final (ONT) at 840.2 was revised to network terminal, and the definition was revised to adjust twisted pair-based and coaxial cablevision-based systems in add-on to optical fiber-based systems.
Informative Addendum D – Examples
Revision/New: Example D7 – Sizing of Service Conductors for Home(s)
The example for sizing of service conductor for dwelling units at Example D7 was proposed to exist revised to clarify the use of correction and adjustment factors. The case would at present include provisions for sizing dwelling unit service conductors with no required adjustment or correction factors, and provisions with required temperature correction factors such as ambient temperature correction factors at Table 310.fifteen(B)(2)(a). The previous table data that was located in Table 310.xv(B)(seven) prior to the 2014 NEC was re-inserted at Example D7. This table was added to show the home-unit service conductor sizes required if there were no adjustment or correction factors to exist practical.
This article is an attempt to provide readers with current data about proposed revisions that take been approved thus far in the 2017 NEC Code development process. Role 1 of these revisions covering fundamental proposed changes located in NEC Chapters i through three was published in the May-June 2015 result of IAEI magazine. These proposed changes are not set in stone as nosotros are yet in the centre of the 2017 NEC development procedure and are subject to changes based on Public Comments, etc. The last version of the 2017 NEC is scheduled be published in September 2016. These changes and many others will be featured in IAEI's Analysis of Changes, 2017 NEC scheduled to be published during the same time frame equally the 2017 NEC.
Does Nec Require Noalox On Service 2017,
Source: https://iaeimagazine.org/standards/analysis-of-changes-2017-nec-part-2/
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