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With the 2017 release of the NEC coming soon, there are some
changes and revisions you will need to know and prepare you for
the upcoming changes. TPC Training Systems introduces some of
the proposed and expected changes to come with this release. https://www.tpctraining.com/

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2017 Changes to the NEC Code


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    1. 2017 NEC National Electrical Code Proposed Changes & Revisions 2017 National Electrical Code© With the 2017 release of the NEC coming soon, there are some changes and revisions you will need to know. To prepare you for the upcoming changes, TPC Training Systems introduces some of the proposed and expected changes to come with this release. Sources: http://iaeimagazine.org/magazine/2015/04/30/analysis-of-changes-2017-nec/ http://iaeimagazine.org/magazine/2015/09/04/analysis-of-changes-2017-nec-part-2/ info@tpctraining.com

    2. 2017 NEC Proposed New Articles 2017 NEC Proposed New Articles Source: http://iaeimagazine.org/magazine/2015/04/30/analysis-of-changes-2017-nec/ info@tpctraining.com

    3. 2017 NEC Proposed New Articles Article 425 - Fixed Resistance and Electrode Industrial Process Heating Equipment Boilers Electrode Boilers Duct Heaters Strip Heaters Immersion Heaters Process Air Heaters Other Approved Fixed Electrical Equipment Does not apply to: Heating & Room Air-Conditioning for Personnel Space info@tpctraining.com

    4. 2017 NEC Proposed New Articles Article 691 - Large-Scale Photovoltaic (PV) Electric Supply Stations According to the substantiation, the two main drivers for this proposed new article are: 1) elimination of AHJ professional risk when assessing compliance of large-scale PV electric supply stations 2) enabling system engineers to use engineering best practices in the design of large-scale PV electric supply stations. info@tpctraining.com

    5. 2017 NEC Proposed New Articles Article 706 - Energy Storage Systems The current state of energy storage technology, which includes batteries, and the anticipated evolution of energy storage, support the need for a singular set of requirements in the NEC covering such systems. info@tpctraining.com

    6. 2017 NEC Proposed New Articles Article 712 - Direct-Current Microgrids The current state of energy storage technology, which includes batteries, and the anticipated evolution of energy storage, support the need for a singular set of requirements in the NEC covering such systems. info@tpctraining.com

    7. 2017 NEC Chapter ONE - General Requirements 2017 NEC Changes to Chapter One: General Requirements Source: http://iaeimagazine.org/magazine/2015/04/30/analysis-of-changes-2017-nec/ info@tpctraining.com

    8. 2017 NEC Chapter ONE - General Requirements NEW: 110.14(D) - Electrical Equipment: Tightening Torque Findings of a field study presented in 2011, indicated that installers incorrectly tighten electrical terminations at least 75% of the time when not using a torque wrench. This proposed requirement would make it clear to installers and inspectors that using torque tools is required when a torque value is indicated on electrical equipment, such as a banelboard lug. info@tpctraining.com

    9. 2017 NEC Chapter ONE - General Requirements NEW: 110.16(B) - Arc-Flash Hazard Warning - Service Equipment Requires additional information to be included in the arc-flash hazard warning label specifically addressing service equipment. Requires Labels to Contain: Nominal System Voltage Arc-Flash Boundaries And at least one of the following: Available incident energy & corresponding working distance Minimum Arc Rating of Clothing Site-Specific Level of PPE info@tpctraining.com

    10. 2017 NEC Chapter ONE - General Requirements NEW: 110.21(A)(2) - Equipment Marking - Reconditioned Equipment Requires reconditioned equipment to be makred with the name, trademwark, or other descriptive marking, identifying the organization responsible for reconditioning the electrical equipment. It also requires the date of the reconditioning to be provided as well. info@tpctraining.com

    11. 2017 NEC Chapter ONE - General Requirements NEW: 110.26(A)(4) - Working Space About Electrical Equipment - Limited Access Addresses equipment “located in a space with limited access,” such as above a suspended ceiling or in a crawl space. There are four restrictions: Where equipment is located above a lay-in ceiling Width of the limited access working space Doors or hinged panels being capable of opening a minimum of 90° Space in front of the enclosure info@tpctraining.com

    12. 2017 NEC Chapter ONE - General Requirements NEW: 110.26(A)(4) - Working Space About Electrical Equipment - Clear Space Signs These working space signs would be required to meet the requirements of 110.21(B) for field-applied hazard markings and would need to read as follows: “NOTICE - ELECTRICAL EQUIPMENT WORKING SPACE AND EGRESS AREA - NO OBSTRUCTION OR STORAGE ALLOWED.” info@tpctraining.com

    13. 2017 NEC Chapter TWO - Wiring and Protection 2017 NEC Changes to Chapter Two: Wiring and Protection Source: http://iaeimagazine.org/magazine/2015/04/30/analysis-of-changes-2017-nec/ info@tpctraining.com

    14. 2017 NEC Chapter TWO - Wiring and Protection REVISION: 210.8(A) - GFCI Protection: Dwelling Units All 250-volt, single-phase, 15-and 20-ampere receptables installed in the locations specificed in 210.8(A), present a shock hazard and should be included in the GFCI protection in dwelling units. info@tpctraining.com

    15. 2017 NEC Chapter TWO - Wiring and Protection NEW: 210.8(B)(2)(A) - SPGFCI Protection The requirements in this section have been expanded to recognize the fact that shock hazards are not limited to 15- and 20-ampere, 125-volt circuits at nondwelling unit locations. info@tpctraining.com

    16. 2017 NEC Chapter TWO - Wiring and Protection NEW: 210.11(C)(4) - Dwelling Units - Garage Branch Circuits A new requirement has been proposed to require at least one 20-ampere rated branch circuit to supply dwelling unit garage 125-volt receptable outlet(s). Many appliances and tools used in dwelling unit garages are rated at 12-16-amperes or higher and demand at least a 20-ampere rated branch circuit. info@tpctraining.com

    17. 2017 NEC Chapter TWO - Wiring and Protection REVISION: 210.12(A) - Whole-House AFCI Protection The proposed revision to 210.12(A) would require arc-fault circuit-interrupter (AFCI) protection for all 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices installed in dwelling units. info@tpctraining.com

    18. 2017 NEC Chapter TWO - Wiring and Protection NEW: 210.71 - Meeting Room Receptacles New requirements for a minimum number of nonlocking-type 125-volt, 15-and 20-ampere receptacles to be installed in nondwelling unit meeting rooms have been proposed. This proposal addresses the inherent concerns relating to inadequate access to electrial power in meeting rooms. info@tpctraining.com

    19. 2017 NEC Chapter TWO - Wiring and Protection REVISION: 230.29 - Overhead Service Conductors - Supports Over Buildings Revisions to 230.29 will require metal support racks or structures to be bonded by means of a bonding jumper and listed connector to the grounded overhead service conductor for grounded systems. This proposed language will provide installers clear bonding provisions and the AHJ a clear requirement for enforcement. info@tpctraining.com

    20. 2017 NEC Chapter TWO - Wiring and Protection NEW: 240.67 - Arc Energy Reduction (Fuses) The proposed requirements of 240.67 are based upon the requirements in 240.87 for circuit breakers, but modified to work with fusible switches. This arc energy reduction requirement for fusible switches has a proposed future effective date of January 1, 2020. info@tpctraining.com

    21. 2017 NEC Chapter TWO - Wiring and Protection REVISION: 250.30(A)(4) - Grounding Separately Derived AC Systems - Grounding Electrode System The new proposed text at 250.30(A)(4) will allow any of the building or structure grounding electrodes described at 250.52(A) to be used as the grounding electrode for the separately derived system without an order of preference. info@tpctraining.com

    22. 2017 NEC Chapter TWO - Wiring and Protection REVISION: 250.52(A)(2) - Grounding Electrodes - Metal In-Ground Support Structure(s) Currently, two conditions exist in the 2014 NEC in order for a metal frame of a building or structure to qualify as a grounding electrode. The proposed text for the 2017 NEC leaves only one condition: One or more metal in-ground support structure(s) in direct contact with the earth vertically for 3.0m (10ft) or more, with or without concrete encasement. 3.0m (10ft) or more info@tpctraining.com

    23. 2017 NEC Chapter TWO - Wiring and Protection NEW: 250.52(B)(3) - Not Permitted For Use As Grounding Electrodes Decisive language was proposed that would prohibit the structures and/or structural reinforcing steel of an in-ground swimming pool described at 680.26(B)(1) and (B)(2) from being used as a grounding electrode for a building or structure. info@tpctraining.com

    24. 2017 NEC Chapter THREE - Wiring Methods 2017 NEC Changes to Chapter Three: Wiring Methods Source: http://iaeimagazine.org/magazine/2015/04/30/analysis-of-changes-2017-nec/ info@tpctraining.com

    25. 2017 NEC Chapter THREE - Wiring Methods REVISION: Table 300.5 - Minimum Cover Requirements A new “General Note” to Table 300.5 has been recommended to resolve a potential conflict between UL 1838 and Table 300.5. The proposed footnote would read: “A lesser depth [other than specified by Table 300.5] shall be permitted where specified in the installation instructrions of a listed low-voltage lighting system.” info@tpctraining.com

    26. 2017 NEC Chapter THREE - Wiring Methods REVISION: 310.15(B)(7) - Sizing Dwelling Unit Services and Feeders For the 2017 NEC, a First Revision will allow the reduction in size for dwelling unit service conductors and a feeder that supplies the entire dwelling to also include systems of a 120/208-volt system to qualify as well. info@tpctraining.com

    27. 2017 NEC Chapter THREE - Wiring Methods NEW: 314.27(E) - Outlet Boxes - Separable Attachment Fittings Addresses new technology incorporating listed power supply devices, and listed locking support, and mounting receptacles and supporting means for luminaires and ceiling-suspended paddle fans to be installed in or to boxes designed for the purpose. info@tpctraining.com

    28. 2017 NEC Chapter THREE - Wiring Methods NEW: 320.6 - Listing Requirements - Cable Wiring Methods New provisions have been proposed to be added at .06 of several of the cable-type wiring method articles that would require the wiring method (cable) and associated fittings to be listed and labeled. This new listing requirement was proposed for: 320.6 Type AC cable 322.6 Type FC cable 324.6 Type FCC cable 328.6 Type MV cable 330.6 Type MC cable 332.6 Type MI cable 334.6 Type NM cable 336.6 Type TC cable 338.6 Type SE cable 340.6 Type UF cable. info@tpctraining.com

    29. 2017 NEC Chapter THREE - Wiring Methods REVISION: 338.10(B)(4) - Uses Permitted - Type SE Cable Provisions have been proposed to limit the restriction of service-entrance (SE) cables ampacity ratings to the 60ºC(140ºF) conductor temperature rating. This change will align smaller Type SE cables wi th Type NM cables as related to heat dissipation when installed in thermal insulation. info@tpctraining.com

    30. 2017 NEC Chapter THREE - Wiring Methods NEW: 366.20 - Auxiliary Gutters - Conductors Connected in Parallel Specific language requires parallel conductors to be installed in groups consisting of not more than one conductor per phase, neutral, or grounded conductor to prevent current imbalance in the paralleled conductors due to inductive reactance. The same parallel provisions were also proposed for metal wireways at 376.20 and for nonmetallic wireways at 378.20. info@tpctraining.com

    31. 2017 NEC Chapter FOUR - Equipment for General Use 2017 NEC Changes to Chapter Four: Equipment for General Use Source: http://iaeimagazine.org/magazine/2015/09/04/analysis-of-changes-2017-nec-part-2/ info@tpctraining.com

    32. 2017 NEC Chapter FOUR - Equipment for General Use NEW: 404.22 - Electronic Lighting Control Switches This new provision prohibits electronic lighting control switches from introducing current on the equipment groundign conductor during normal operation. This proposal would have a future effective date of January 1, 2020. info@tpctraining.com

    33. 2017 NEC Chapter FOUR - Equipment for General Use NEW: 406.3(F) - Receptacle With USB Charger New provisions would require 125-volt 15- or 20-ampere receptacles that additionally provide Class 2 power in the form of a USB charger to be listed and constructed such that the Class 2 circuitry is integral with the receptacle. info@tpctraining.com

    34. 2017 NEC Chapter FOUR - Equipment for General Use REVISION: 406.12 - Tamper-Resistant Receptacles The proposed requirement expansion would bring tamper-resistant safety devices to areas that small children frequently occupy. New locations include: Preschools Elementary Education Business offices Corridors Outpatient facilities Waiting rooms Clinics Medical Offices Dental Offices Gymnasiums Skating Rinks Auditoriums Dormitories info@tpctraining.com

    35. 2017 NEC Chapter FOUR - Equipment for General Use REVISION: 408.3(A)(2) - Barriers at Service Panelboards, Switchboards, and Switchgear Panelboards have been added to the type of service equipment, along with switchboards and switchgear, that will require barriers to be placed in these service enclosures to prohibit uninsulated, ungrounded service busbars or service terminals from being exposed to inadvertent contact by persons or maintenance equipment while servicing load terminations. info@tpctraining.com

    36. 2017 NEC Chapter FOUR - Equipment for General Use NEW: 409.23 - Available Fault Current (Industrial Control Panels) New provisions were proposed for a field marking requirement for industrial control panels indicating the available fault current. This proposed field marking would be similar to the available fault-current field marking requirements of 110.24(A). info@tpctraining.com

    37. 2017 NEC Chapter FOUR - Equipment for General Use REVISION: 422.16(B)(2) - Built-in Dishwashers Proposed revisions would allow only the receptace outlet for a cord- and plug-connected dishwaster to be located in the space adjacent to the dishwasher. info@tpctraining.com

    38. 2017 NEC Chapter FOUR - Equipment for General Use REVISION: 445.11 - Marking (Generators) The marking and nameplate requirements for all stationary generators and portable generators rated more than 15kW have been proposed to be revised to include not only the power factor, the subtransient, and the insulation system class but also the transient reactances, and the maximum short-circuit current. info@tpctraining.com

    39. 2017 NEC Chapter FIVE - Special Occupancies 2017 NEC Changes to Chapter Five: Special Occupancies Source: http://iaeimagazine.org/magazine/2015/09/04/analysis-of-changes-2017-nec-part-2/ info@tpctraining.com

    40. 2017 NEC Chapter FIVE - Special Occupancies RELOCATION: 500.2 - Definitions: Hazardous (Classified) Locations The existing definitions presently located at 500.2 have been proposed to be relocated to Article 100 to comply with the NEC Style Manual, which states that: A definition used in two or more articles is required to be located in Article 100. info@tpctraining.com

    41. 2017 NEC Chapter FIVE - Special Occupancies REVISION: 501.10(B)(1) - Wiring Methods for Class 1, Division 2 The wiring methods permitted for Class 1, Division 2 locations have been proposed to be expanded to include rigid metal conduit (RMC) and intermediate metal conduit (IMC) with listed threadless fittings, along with the addition of electrical metallic tubuting (EMT) with listed fittings. info@tpctraining.com

    42. 2017 NEC Chapter FIVE - Special Occupancies NEW: Tables 511.3(C) and 511.3(D): Tables for Major and Minor Repair Garages In order to align with NFPA 30A, 511.3(C) and 511.3(D) are proposed to be replaced respectively in their entiretey with new tables. 511.3(C): Covering both major and minor repair garages where heavier than air gaseous Class 1 liquirds are transferred or dispensed. 511.3(D): Covering major repair garages where vehicles using lighter than air gaseous fuels are repaired or stored. info@tpctraining.com

    43. 2017 NEC Chapter FIVE - Special Occupancies REVISION: 517.2 - Definitions: Health Care Facilities Health Care Facilities will now include buildings, portions of buildings, or “mobile enclosures” in which human medical, dental, psychiatric, nursing, obstetrical, or surgical care is provided. info@tpctraining.com

    44. 2017 NEC Chapter FIVE - Special Occupancies REVISION: 517.31(B) - Essential Electrical Systems Transfer Switches Assuring that all transfer switches of all of the branches of the essential electrical system meet the same requirements as emergency systems found in other types of occupancies will help the health care facility’s essential electrical system protect paitients and health care personnel during times of emergencies and/or disasters. info@tpctraining.com

    45. 2017 NEC Chapter SIX - Special Equipment 2017 NEC Changes to Chapter Six: Special Equipment Source: http://iaeimagazine.org/magazine/2015/09/04/analysis-of-changes-2017-nec-part-2/ info@tpctraining.com

    46. 2017 NEC Chapter SIX - Special Equipment NEW: 600.34 - Photovoltaic (PV) Powered Signs This new section of NEC Article 600 will provide rules for field wiring and the installation and safe usage of PV-powered signs. This section is also intended to harmonize Article 600 with Article 690 and the end use of PV signs constructed per UL 48. info@tpctraining.com

    47. 2017 NEC Chapter SIX - Special Equipment NEW: Article 680 Part VIII - Electrically Powered Pool Lifts This proposed new part to Article 680 attempts to permit a compliant installation with adequate safety requirements for all swimming pool users, and would cover: Listing & Labeling Requirements GFCI Protection for Personnel Bonding Requirements Switching Devices Nameplate Info. & Requirements info@tpctraining.com

    48. 2017 NEC Chapter SIX - Special Equipment DELETION: Table 680.10 - Minimum Cover Depths - Swimming Pools CMP-17 determined that all underground wiring should be installed per the burial depths of Table 300.5, thus eliminating the requirement for Table 680.10. info@tpctraining.com

    49. 2017 NEC Chapter SIX - Special Equipment REVISION: 690.8(A)(1) - Calculation of Maximum PV Sourse Circuit Current The substantiation of this revision points out that an engineer qualified to design PV systems is capable of making the necessary calculations or running the necessary simulations to develop accurate maximum circuit currents of PV sourse cicruits based on the specifics of an installation location. info@tpctraining.com

    50. 2017 NEC Chapter SIX - Special Equipment NEW: 695.15 - Surge Protection for Fire Pumps A new provision was proposed for fire pumps that would require a listed surge protection device to be installed in or on the fire pump controllers. The NFPA Fire Protection Research Foundation discovered that 12% of the fire pumps tested had damage due to voltage surges. info@tpctraining.com