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Electrical Safety Standards,Administration andInstallationState of WashingtonWAC 296-46BEffective October 29, 2020Electrical ProgramOn the Web: www.ElectricalProgram.Lni.wa.govF500-142-000 (10-2020)
FIELD SERVICES AND PUBLIC SAFETYSteve Reinmuth, Assistant DirectorELECTRICAL PROGRAMWayne Molesworth,Chief Electrical InspectorPO Box 44460Olympia, WA 98504-4460(360) 902-5249E-mail: ElectricalProgram@lni.wa.govELECTRICAL LICENSING AND CERTIFICATIONPO Box 44460Olympia, WA 98504-4460(360) 902-5269E-mail: ElectricalProgram@lni.wa.govELECTRICAL PLAN REVIEWFedEx: 7273 Linderson Way SWTumwater, WA 98501-4460PO Box 44460Olympia, WA 98504-4460(360) 902-5246E-mail: icensing/ElectricalHow to Request an Electrical EGION ONEREGION TWOBELLINGHAM, WA 98225-4647 (BHAM)BELLEVUE, WA 98005-3037 (NB75)MOUNT VERNON, WA 98273-5500(MTVE)TUKWILA, WA 98168-1050 (TB52)1720 Ellis St, Suite 200(360) 647-7300 FAX (360) 647-731024 Hr Inspection Line (360) 647-7272525 E College Way, Suite H(360) 416-3000 FAX (360) 416-303124 Hr Inspection Line (360) 416-3005EVERETT, WA 98208-3727 (TB26)TH729 100 ST SE(425) 290-1309 FAX (425) 290-139924 Hr Inspection Line (425) 290-1310616 120th Avenue NE, Suite C201(425) 990-1400 FAX (425) 990-144624 Hr Inspection Line (425) 990-1430PO Box 6905012806 Gateway Drive(206) 835-1000 FAX (206) 835-119924 Hr Inspection Line (206) 835-1198
REGION THREEREGION FIVESILVERDALE, WA 98383 (SILV)EAST WENATCHEE, WA 98802 (EWEN)10049 Kitsap Mall Boulevard NW, Suite 100(360) 308-2800 FAX (360) 308-284824 Hr Inspection Line (360) 415-4039SEQUIM, WA 98382 (SEQU)519 Grant Rd(509) 886-6500 FAX (509) 886-651024 Hr Inspection Line (509) 886-6520KENNEWICK, WA 99338 (KENN)542 W Washington Street(360) 417-2700 FAX (360) 417-273324 Hr Inspection Line (360) 417-27224310 W 24th Avenue(509) 735-0100 FAX (509) 735-012024 Hr Inspection Line (509) 735-0148EASTTACOMA, WA 98402-4453 (WT21)MOSES LAKE, WA 98837-2907 (MLAK)REGION FOURUNION GAP, WA 98903-1204 (UGAP)950 Broadway, Suite 200(253) 596-3808 FAX (253) 596-395624 Hr Inspection Line (253) 596-3822TUMWATER, WA (4814)PO Box 44814Olympia WA 98504-48147273 Linderson Way SW MS 4814Tumwater WA 98501-5414(360) 902-6350 FAX (360) 902-634024 Hr Inspection Line (360) 902-5242ABERDEEN, WA 98520-0013 (WA42)415 W Wishkah, Suite 1B(360) 533-8200 FAX (360) 533-822024 Hr Inspection Line (360) 533-8229VANCOUVER, WA 98684-3508 (S14)312 SE Stonemill Dr, Suite 120(360) 896-2360 FAX (360) 896-234524 Hr Inspection Line (360) 896-2350KELSO, WA 98626-2650 (S10)711 Vine St(360) 575-6900 FAX (360) 575-691824 Hr Inspection Line (360) 575-69233001 W Broadway Ave(509) 764-6900 FAX (509) 764-692324 Hr Inspection Line (509) 764-69661205 Ahtanum Ridge Drive, Suite C(509) 454-3760 FAX (509) 454-371024 Hr Inspection Line 1-800-442-7516REGION SIXSPOKANE, WA 99201-2149 (SPOK)901 N Monroe Suite 100(509) 324-2640 FAX (509) 324-265524 Hr Inspection Line (509) 324-2650PULLMAN, WA 99163-2416 (PULL)PO Box 8471250 Bishop Blvd SE Suite G(509) 334-5296 or 1-800-509-0025FAX (509) 334-341724 Hr Inspection Line (509) 334-42
Chapter 296-46B WACElectrical safety standards, administration, and installationLast Update: May 19, 2020; Effective: October 29, 2020Table of ContentsPart A – NEC installation amendments, standards, inspections, and definitions . 8WAC 296-46B-010 General. . 8Adopted standards. .8Inspections - General. .8Inspection move on buildings and structures. .9Wiring methods for designated building occupancies. . 10Traffic management systems. . 10WAC 296-46B-100 General definitions. 11WAC 296-46B-110 General - Requirements for electrical installations. . 15003 Examination, identification, installation, and use of equipment. 15011 Deteriorating agents. . 15022 Identification of disconnecting means. . 15030 Over 1000 volts – General. . 16WAC 296-46B-210 Wiring and protection — Branch circuits. . 16008(A) Dwelling units GFCI requirements. 16008(B) Other than dwelling units – GFCI requirements. . 16011 Branch circuits. . 16013 Ground fault protection of equipment. . 16025 Common area branch circuits. . 16052(A)(2) Dwelling unit receptacle outlets. . 16WAC 296-46B-215 Wiring and protection — Feeders. . 17002 Minimum rating and size . 17005 Diagrams of feeders. . 17010 Ground fault protection testing. . 17WAC 296-46B-220 Wiring and protection — Branch circuit, feeder, and servicecalculations. . 17012 Lighting load calculations. . 17WAC 296-46B-225 Wiring and protection — Outside branch circuits and feeders. . 18019 Clearances from buildings for conductors . 18032 Location of outside feeder disconnecting means. . 18036 Suitable for use as service equipment. . 18WAC 296-46B-230 Wiring and protection — Services. . 18001 General service requirements. . 18028 Service or other masts. . 18040 Service conductors - Two-family and multiple-occupancy buildings. . 22042 Service conductor - Size and rating. . 22043 Wiring methods for 1000 volts, nominal or less. . 22070 Service equipment – Disconnecting means. . 23Page 1 of 118WAC 296-46B-010 General.
095 Ground-fault protection of equipment. 23200 Wiring methods exceeding 1000 volts. . 23WAC 296-46B-240 Overcurrent Protection. . 23024(C) Not exposed to physical damage. . 23024(F) Not located over steps. . 24WAC 296-46B-250 Wiring and protection — Grounding and bonding. . 24028(D)(3) Separately derived system with more than one enclosure. . 24052 Grounding electrodes. . 24053(A)(2) Resistance of rod, pipe, and, plate electrodes . 24064 Grounding electrode conductor installation – Physical protection . 24068 Accessibility. . 25090 Bonding. . 25104(B) Bonding – Other metal piping. . 25184 Solidly grounded neutral systems over 1000 volts. . 25WAC 296-46B-300 Wiring methods and materials — Wiring methods. 26005 Underground installations. 26011 Support of raceways, cables, or boxes in suspended ceilings. . 27017 Conductors in raceway. . 27WAC 296-46B-314 Wiring methods and materials — Outlet, device, pull, and junctionboxes. .27001 Boxes and fittings. . 27023(H) Flexible cord connection of pendant boxes. . 27WAC 296-46B-334 Wiring methods and materials — Nonmetallic-sheathed cable. 28010 Nonmetallic-sheathed cable. . 28015 Exposed work. . 28WAC 296-46B-336 Power and Control Tray Cable – Type TC . 28010 Uses permitted . 28WAC 296-46B-358 Wiring methods and materials — Electrical metallic tubing. . 28012 Electrical metallic tubing. . 28WAC 296-46B-394 Wiring methods and materials — Concealed knob-and-tube wiring. 28001 Knob-and-tube wiring. . 28WAC 296-46B-406R Equipment for general use – Receptacles. 29012 Tamper-resistant receptacles. . 29WAC 296-46B-408 Equipment for general use - Switchboards, switchgear, andpanelboards. .29WAC 296-46B-410 Equipment for general use — Luminaires. . 29010 Luminaires. . 29062 Flexible cord connection of electric discharge luminaires. . 29WAC 296-46B-422 Equipment for general use — Appliances. . 30010 Water heater circuit. . 30WAC 296-46B-430 Motors, motor circuits, and controllers. . 30007 Marking on motors and multimotor equipment. . 30WAC 296-46B-440 Air conditioning and refrigerating equipment. . 30014 Disconnecting means. . 30WAC 296-46B-450 Equipment for general use — Transformers and transformer vaults.30Page 2 of 118WAC 296-46B-010 General.
027 Flammable-liquid or oil-filled transformers installed outdoors. . 30Figure 450-1 . 31Figure 450-2 . 31WAC 296-46B-500 Hazardous (Classified) Locations — Classes I, II, and III, Divisions 1and 2. . 32005 Classification of Locations. . 32WAC 296-46B-501 Special occupancies — NEC Class I locations. . 32001 Sewage disposal systems. . 32WAC 296-46B-505 Class I, Zone 0, 1, and 2 Locations. . 33007 Implementation of Zone Classification. . 33WAC 296-46B-513 Special occupancies — Aircraft Hangars. . 33001 Scope. . 33WAC 296-46B-514 Special occupancies — Motor fuel dispensing facilities. . 33001 General. . 33003 Classifications of locations. . 33011 Emergency disconnecting means - Dispensing and service stations. . 33013 Maintenance and service of dispensing equipment. . 34WAC 296-46B-517 Special occupancies — Health care facilities. . 34001 Health care facilities. . 34013 Wiring methods. . 34017 Ground-fault protection. 34WAC 296-46B-547 Special occupancies — Agricultural buildings. . 35001 Scope. . 35WAC 296-46B-550 Special occupancies — Mobile homes, manufactured homes, andmobile home parks. . 35001 Mobile/manufactured homes - inspection. . 35032 Mobile/manufactured homes - service. . 35033 Mobile/manufactured homes - feeder. . 35WAC 296-46B-555 Special occupancies — Marinas, boatyards, floating buildings, andcommercial and noncommercial docking facilities. . 35Floating Buildings . 36WAC 296-46B-590 Special occupancies — Temporary installations. 36001 Temporary installations. . 36003 Temporary installations – time constraints . 36004 Temporary installations - splices. . 36WAC 296-46B-600 Special equipment — Electric signs and outline lighting. . 36001 Electrical signs - General. . 36004 Markings. . 37007 Grounding and bonding. . 37010 Portable or mobile outdoor electrical signs. . 37030 Neon tubing. . 37WAC 296-46B-620 Special equipment – Elevators. 37WAC 296-46B-680 Special equipment — Swimming pools, fountains, and similarinstallations. . 37001 General. . 37040 Spas and hot tubs. . 38070 Hydromassage bathtubs. . 38Page 3 of 118WAC 296-46B-010 General.
WAC 296-46B-690 Solar Photovoltaic Systems. 38002 Definitions. . 38004 Installation. . 38007 Maximum voltage. . 39WAC 296-46B-694 Wind electric systems. . 39WAC 296-46B-700 Emergency systems. . 39001 Emergency systems - General. . 39007 Signs. 39010 Emergency systems - Equipment identification. . 39032 Coordination. . 39WAC 296-46B-701 Legally required standby systems. . 40007 Signs. 40027 Coordination. . 40WAC 296-46B-702 Optional standby systems. . 40007 Signs. 40WAC 296-46B-705 Interconnected electric power production sources. . 40011 Supply side source connections. . 40WAC 296-46B 760 Fire alarm systems. . 40WAC 296-46B 800 Communications systems — Communications circuits. . 40General. . 40001 Installation. . 41002 Definitions. . 41Part B – Electrical Plan Review. . 43WAC 296-46B-900 Electrical plan review. . 43Definition of occupancies. . 43Plan review for educational, institutional, or health care facilities/buildings. . 44Table 900-1 Health or Personal Care Facilities . 46Table 900-2 Educational and Institutional Facilities, Places of Assembly, or Other Facilities . 46Part C – Permits and fees. . 47WAC 296-46B-901 General — Electrical work permits and fees. 47General. . 47Permit - Responsibility for. . 47Permit - Requirements for. . 47Inspection and approval. . 49Permit - Duration/refunds. . 49Permit - Annual telecommunications. . 49Permit - Annual electrical. . 49Permit - Temporary construction project installations. . 50Posting of corrections. . 50WAC 296-46B-902 Equipment standards approval — City ordinances. . 50Evaluation engineers, testing laboratories, and equipment standards. . 50WAC 296-46B-903 Equipment standards. . 51General. . 51Industrial control panel and industrial utilization equipment inspection. . 51WAC 296-46B-906 Inspection fees. . 53Part D – Provisional permits. . 60Page 4 of 118WAC 296-46B-010 General.
WAC 296-46B-907 Provisional permits. . 60Provisional electrical work permit - Use/duration/refunds. . 60Part E – Class B permits. . 61WAC 296-46B-908 – Class B permits. . 61Class B electrical work permit - Use. . 61Part F – Administrative. . 64WAC 296-46B-909 Electrical/telecommunications contractor’s license, administratorcertificate and examination, master electrician certificate and examination, electriciancertificate and examination, copy, and miscellaneous fees. . 64WAC 296-46B-911 Electrical testing laboratory and engineer accreditation fees. . 67WAC 296-46B-915 Civil penalty schedule. . 68WAC 296-46B-920 Electrical/telecommunications license/certificate types and scope ofwork. . 72General Electrical. (01) . 72Specialties. . 72WAC 296-46B-925 Electrical/telecommunications contractor's license. 79General. . 79Electrical/telecommunications contractor bond, cash or securities deposit. . 79Telecommunications contractor insurance. 79Electrical/telecommunications contractor exemptions. . 80Exemptions - Electrical utility and electrical utility's contractor. . 81Exemptions - Electrical utility telecommunications transition equipment installations, maintenanceand repair. . 82Exemptions - Independent electrical power production equipment exemption. . 82Exemptions - Telegraph and telephone utility and telegraph and telephone utility's contractor. . 83Exemptions - Manufacturers of electrical/telecommunications products. . 83Premanufactured electric power generation equipment assemblies and control gear. . 83Photovoltaic equipment. . 84Submersible well pump installers . 84WAC 296-46B-930 Assignment — Administrator or master electrician. . 85WAC 296-46B-935 Administrator certificate. . 85General. . 85Qualifying for examination. .
Electrical Safety Standards, Administration and Installation State of Washington WAC 296-46B Effective October 29, 2020 Electrical Program On the Web
