2014 National Electrical Code: Top 10 Revisions Impacting Electrical Installations


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2014 National Electrical Code: Top 10 Revisions Impacting Electrical Installations

  1. 1. Schneider Electric 1-– 2014 NEC Changes – 20132014 National Electrical CodeTop 10 Revisions ImpactingElectrical Installation●Alan Manche, P.E.●Director, Industry StandardsTweet Live!#SchneiderXE
  2. 2. Schneider Electric 2-– 2014 NEC Changes – 2013ObjectivesUpon completion, you will be able to:● Identify key revisions to the 2014 NEC● Identify new requirements for AFCI and GFCI● Define and apply the lighting calculation to the NEC based onthe energy code lighting controls● Apply the revised NEC requirements for:● 1000V systems compared to 600V● Energy Management● Arc Energy Reduction● EV Supply Equipment as applied using an EnergyManagement system● Identify new requires for new surge protection requirements onemergency panels
  3. 3. Schneider Electric 3-– 2014 NEC Changes – 20132014 NEC Facts● 3,745 Proposals● 1,625 Comments● 4 New Articles (393, 646, 728, 750)● 19 Code Making Panels● 473 Volunteer Code Making Panel Members● NFPA Annual Meeting, June 2013● 2014 NEC Published, September 2013
  4. 4. Schneider Electric 4-– 2014 NEC Changes – 2013Article 750 Energy Management Systems•Article proposed by the “Smart Grid TaskGroup” appointed by the TechnicalCorrelating Committee•Energy Management has becomecommon place in today’s electricalinfrastructure - control of utilizationequipment, energy storage and powerproduction•Restricting the control of the system bythe energy management system becomescritical to ensure safety(Example: load shedding for an alternatepower source for fire pumps andemergency systems)
  5. 5. Schneider Electric 5-– 2014 NEC Changes – 2013Increasing 600 V requirements to 1000 V●High Voltage Task Group Appointedby the NEC Technical CorrelatingCommittee●Identified demand for increasing voltagelevels in wind generation andphotovoltaic systems as the basis forenhancing common voltage levels●Chapters 1 – 8 reviewed●Proposals were created in areas wherethe TG agreed the change resulted inminimal or no impact to the systeminstallation● Article 100 (Definitions) and Article 110 (Requirements forelectrical installations retained the 600 V breakpoint
  6. 6. Schneider Electric 6-– 2014 NEC Changes – 2013110.26(C)(3) – Personnel Doors(3) Where there is equipment 800Aor greater and there are doors thatare within 25’ of the nearest edgeof the working space – the doormust have panic hardware andmust open outward●Rules for two working spaceentrances in 110.26(C)(2) areunchanged (equipment is 1200Aor greater and the equipment isover 6 feet wide)Condition 1Working SpaceEquipment 800Aor greaterSheetrock wallTop Down View<=25’Door must openoutward andhave panichardware
  7. 7. Schneider Electric 7-– 2014 NEC Changes – 2013210.8(A) – GFCI (Dwellings)●All 125-volt, single-phase, 15- and20-ampere receptacles installed inthe locations specified in210.8(A)(1) through (10) shall haveground-fault circuit-interrupterprotection for personnel.●(10) Laundry Areas(10) - Laundry
  8. 8. Schneider Electric 8-– 2014 NEC Changes – 2013210.8(D) – GFCI (Dwellings)●GFCI protection shall be providedfor outlets that supply dishwashersKitchen Dishwasher Branch Circuit
  9. 9. Schneider Electric 9-– 2014 NEC Changes – 2013210.12 - AFCI120V, 15A and 20A branch circuits thatsupply outlets in dwelling unit:Kitchens, family rooms, dining rooms,living rooms, parlors, libraries, dens,bedrooms, sunrooms, recreationrooms, closets, hallways, laundryareas, or similar rooms(A) – Dwelling Units
  10. 10. Schneider Electric 10-– 2014 NEC Changes – 2013210.12 - AFCI120V, 15A and 20A branchcircuits that supply outletsin dormitory unit:Bedrooms, living rooms,hallways, closets, andsimilar rooms(C) – Dormitory Units
  11. 11. Schneider Electric 11-– 2014 NEC Changes – 2013210.12(A) – AFCI (Dwellings)1. Combination type arc-fault circuitinterrupter, installed to provideprotection of the entire branch circuit2. Branch/feeder type AFCI installed atthe origin of the branch circuit incombination with an outlet branchcircuit type arc-fault circuit interrupterinstalled at the first outlet box on thebranch circuit. (outlet box must bemarked to indicate that it is the firstoutlet of the circuit)Six Options now permitted for AFCI protection
  12. 12. Schneider Electric 12-– 2014 NEC Changes – 2013210.12(A) – AFCI (Dwellings)Six Options now permitted for AFCI protection (continued)3.Supplemental arc protection circuit breaker installed atthe origin of the branch circuit in combination with a listedoutlet branch circuit type arc-fault circuit interrupter installedat the first outlet box on the branch circuit where all of thefollowing conditions are met:(a) Continuous branch circuit wiring from the branch breakers tothe outlet branch circuit AFCI(b) Maximum length of the branch circuit wiring to the first outletmust not exceed 50 ft for a 14 AWG or 70 ft for a 12 AWG(c) First outlet box in the branch circuit shall be identified
  13. 13. Schneider Electric 13-– 2014 NEC Changes – 2013210.12(A) – AFCI (Dwellings)Six Options now permitted for AFCI protection (continued)4. Outlet branch circuit type arc-fault circuit interrupterinstalled at the first outlet box on the branch circuit incombination with a listed branch circuit overcurrentprotective device where all of the following conditions aremet:(a) Continuous branch circuit wiring from the branch circuitovercurrent protective device to the outlet branch circuit AFCI(b) The maximum length of the branch circuit wiring to the firstoutlet must not exceed 50 ft for a 14 AWG or 70 ft for a 12AWG(c) The first outlet box in the branch circuit shall be identified(d) The combination of the branch circuit overcurrent deviceand outlet branch circuit AFCI is identified as meeting therequirements for a "System Combination" type AFCI and islisted as such.
  14. 14. Schneider Electric 14-– 2014 NEC Changes – 2013210.12(A) – AFCI (Dwellings)Six Options now permitted for AFCI protection (continued)5. Outlet branch circuit type arc-fault circuit interrupterinstalled at the first outlet box on the branch circuit incombination with ...● RMC, IMC, EMT, Type MC, or steel armored Type ACcables meeting the requirements of 250.118,● Metal wireways, metal auxiliary gutters and metal outletand junction boxes are installed for the portion of thebranch circuit between the branch-circuit overcurrentdevice and the first outlet
  15. 15. Schneider Electric 15-– 2014 NEC Changes – 2013210.12(A) – AFCI (Dwellings)Six Options now permitted for AFCI protection (continued)6. Outlet branch circuit type arc-fault circuit interrupterinstalled at the first outlet box on the branch circuit incombination with ...● Listed metal or nonmetallic conduit or tubing or● Type MC Cable and● Encased in not less than 50mm (2 in.) of concrete forthe portion of the branch circuit between the branchcircuit overcurrent device and the first outletExceptions (1) and (2) removed. Exception (3) for fire alarm systems retained
  16. 16. Schneider Electric 16-– 2014 NEC Changes – 2013210.12(A) (5) & 210.12(A)(6)Install outletbranch circuit AFCIat the first outletProvides protection for:Wiring from panel tofirst outlet must beinstalled in RMC,IMC, EMT, MC orsteel jacketed ACcable.Must also have metaloutlet and junctionboxes.Also permits metallicand nonmetallicconduit or Tubing orMC cable whereencased in 2” ofconcrete
  17. 17. Schneider Electric 17-– 2014 NEC Changes – 2013220.12 Exception – Lighting Loads forSpecified Occupancies• New Exception allows lighting loads tocalculated using the adopted energycode• Building must be designed andconstructed to comply with the adoptedenergy code and meet the following:• Power monitoring system installed to providelighting load data• Power monitoring system must have alarm(s) toalert the building owner/manager if the lightingload exceeds limits• Demand factors in 220.42 do not apply
  18. 18. Schneider Electric 18-– 2014 NEC Changes – 2013240.87 – Arc Energy Reduction• Required for circuit breakers rated1200 A and above•Documentation on the circuit breakerlocation and•Reduced Clearing Time Method• Zone-selective interlocking or• Differential relaying or• Energy-reducing maintenanceswitching with local statusindicator or• Energy-reducing active arc flashmitigation system or• An approved equivalent means
  19. 19. Schneider Electric 19-– 2014 NEC Changes – 2013310.15(B)(7) – 120/240 V, Single Phase, Servicesand Main Power Feeders (Dwellings)●Table 310.15(B)(7) removed●Service or Feeder ratings 100 through 400 A, an adjustmentfactor of 0.83 of the service or feeder ampere rating can be usedto determine the size of the ungrounded conductors wheresupplying the entire load●Grounded conductor can be smaller than the ungroundedconductors, see 215.2, 220.61, and 230.42●Other correction or adjustment factors applicable to the conductorinstallation apply●New example added to Annex D
  20. 20. Schneider Electric 20-– 2014 NEC Changes – 2013406.9(B)(1)●Expands the “extra duty” coverrequirement to all wet location receptaclelocations not just those supportedfrom grade●Similar revision to 590.4(D)(2)- clarifiesthe “extra duty” requirements apply to allwet location temporaryinstallations, including dwellings
  21. 21. Schneider Electric 21-– 2014 NEC Changes – 2013Article 517 Healthcare Facilities● Revisions align NEC requirements with NFPA 99● Clarify the use of the term “Emergency” and where therequirements of Article 700 apply● Correlation of EES overcurrent device coordinationrequirements
  22. 22. Schneider Electric 22-– 2014 NEC Changes – 2013517.18(B) Patient Bed Location Receptacles●This proposed change increases the minimum number of receptaclesrequired from four to eight.●Aligns with NFPA 99 relative to the increases in quantity ofreceptacles and normal care patient bed locations.22
  23. 23. Schneider Electric 23-– 2014 NEC Changes – 201323
  24. 24. Schneider Electric 24-– 2014 NEC Changes – 2013517.19(B) Patient Bed Location Receptacles –Critical Care●Section 517.19 addresses critical care patient bed locations. Thisproposed revision in subdivision (B) changes the required minimumnumber of receptacles from six to fourteen.●List item (2) in this section was revised by removing the term“emergency system” and replacing it with the term “critical branch.”●Aligns with changes in NFPA 99-201224
  25. 25. Schneider Electric 25-– 2014 NEC Changes – 201325
  26. 26. Schneider Electric 26-– 2014 NEC Changes – 2013517.19(C) Operating Room Receptacles●The minimum number of receptacles required in an operating room isthirty-six of which at least twelve of the thirty-six receptacles must beconnected to either the normal system branch or the critical systembranch.●The grounding terminal of these receptacles must be connected to thereference grounding point by means of an insulated copper equipmentgrounding conductor.26
  27. 27. Schneider Electric 27-– 2014 NEC Changes – 201327
  28. 28. Schneider Electric 28-– 2014 NEC Changes – 2013517.26 Application of Other Articles● Revision clarifies the application of othercode requirements with healthcarefacilities● Life safety branch of the EES mustmeet Article 700 requirements foremergency systems● Aligns NEC requirements with NFPA 99
  29. 29. Schneider Electric 29-– 2014 NEC Changes – 2013Article 625 EV Supply EquipmentEV Supply Equipment requirements throughoutthe article●Electric Vehicle Supply Equipment System.A system of components that provide an acoutput that is supplied to the vehicle for thepurpose of providing input power to an on-board charger.●625.14 Permits Energy Management systemto establish calculated load●625.17 Cords and Cables added to cover thePower Supply Cords and Output Cable to theElectric Vehicle●625.44 Sets requirements for Cord and PlugConnected EV Supply Equipment
  30. 30. Schneider Electric 30-– 2014 NEC Changes – 2013690.17(A) Disconnect TypePV disconnecting means ... one of thefollowing devices:(1) An industrial control switch marked for use in PVsystems.(2) A molded case circuit breaker marked for use in PVsystems(3) A molded case switch marked for use in PV systems.(4) An enclosed switch marked for use in PV systems.(5) An open-type switch marked for use in PV systems.(6) A dc-rated molded case circuit breaker suitable forbackfeed operation.(7) A dc-rated, molded case switch suitable for backfeedoperation.(8) A dc-rated enclosed switch.(9) A dc-rated open-type switch.(10) A dc rated low voltage power circuit breaker.
  31. 31. Schneider Electric 31-– 2014 NEC Changes – 2013700.8 – Surge ProtectionEmergency systems are required to havesurge protection in or on all●Switchboards and●Panelboards
  32. 32. Schneider Electric 32-– 2014 NEC Changes – 2013700.16 – Emergency Illumination● Emergency illumination required inthe area of the disconnectingmeans required by 225.31 and230.70, as applicable, where thedisconnecting means are installedindoors.● Exception provided where analternative means is provided toensure emergency lightingillumination is maintained.
  33. 33. Schneider Electric 33-– 2014 NEC Changes – 2013705.31 – Location of Overcurrent ProtectionOvercurrent protection for thesource conductors, connected tothe supply side of the servicedisconnecting means inaccordance with 705.12(A), mustbe located within (10 ft) of the pointwhere the electric powerproduction source conductors areconnected to the service.Interconnected Electric Power Production SourcesException permits overcurrent protection more than 10 ft from the point ofconnection where cable limiters or current limited circuit breakers for eachungrounded conductor are installed at the connection point to the service.
  34. 34. Schneider Electric 34-– 2014 NEC Changes – 2013About the InstructorAlan Manche, P.E.● Director, Industry Standards at Schneider Electric● Member NEC Correlating Committee & NEC CMP 10● Past Member of NEC CMP 8 and CMP 20● Member of Technical Committee NFPA 110, 70B, and 73● Past Chair of NFPA 70B● Board of Directors Western Section IAEI● Education Chair –International Association of ElectricalInspectors (IAEI)● Member, NEMA Codes and Standards● Chair, NEMA Code Adoption Initiative● Chair, NEMA Water and Fire Damaged EquipmentCommittee