{"product_id":"nfpa-70-national-electrical-code-nec-2020","title":"NFPA 70, National Electrical Code (NEC) 2020","description":"\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:a4c32e15-d9fc-4f1d-b0ed-f2fbe3265ddc-1\" data-testid=\"conversation-turn-4\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"c1f25a5b-7a7d-42ba-a7e4-b60921c84faf\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"47\" data-end=\"248\"\u003eStay current with the code the electrical industry depends on to address today’s evolving electrical hazards, technologies, and installation practices with NFPA 70®, \u003cem data-start=\"213\" data-end=\"247\"\u003eNational Electrical Code® (NEC®)\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp data-start=\"250\" data-end=\"573\"\u003eThe NEC is the authoritative code governing electrical installations in residential, commercial, and industrial occupancies. Revised every three years, NFPA 70 helps keep pace with changing industry practices, renewable energy systems, electric vehicles, communication technologies, and modern electrical safety challenges.\u003c\/p\u003e\n\u003cp data-start=\"575\" data-end=\"838\"\u003eThe code provides comprehensive requirements for electrical design, installation, inspection, and maintenance, making it an essential resource for designers, installers, inspectors, engineers, electricians, contractors, and authorities having jurisdiction (AHJs).\u003c\/p\u003e\n\u003cp data-start=\"840\" data-end=\"1016\"\u003eOrganized for ease of use, the NEC helps professionals improve electrical safety, reduce hazards, and support code-compliant installations across a broad range of applications.\u003c\/p\u003e\n\u003ch3 data-section-id=\"xtvnl1\" data-start=\"1018\" data-end=\"1032\"\u003eHighlights\u003c\/h3\u003e\n\u003cp data-start=\"1034\" data-end=\"1134\"\u003eKey updates and changes to the 2020 edition of NFPA 70®, \u003cem data-start=\"1091\" data-end=\"1125\"\u003eNational Electrical Code® (NEC®)\u003c\/em\u003e include:\u003c\/p\u003e\n\u003cul data-start=\"1136\" data-end=\"1920\"\u003e\n\u003cli data-section-id=\"1c20y8t\" data-start=\"1136\" data-end=\"1288\"\u003eAdded, revised, and reorganized content addressing worker safety, energy systems, electric vehicles, limited energy systems, and communication systems\u003c\/li\u003e\n\u003cli data-section-id=\"l2ap5m\" data-start=\"1289\" data-end=\"1386\"\u003eUpdated service disconnect requirements designed to help protect workers from arc flash hazards\u003c\/li\u003e\n\u003cli data-section-id=\"1hffftg\" data-start=\"1387\" data-end=\"1478\"\u003eRevised installation practices supporting evolving Power over Ethernet (PoE) technologies\u003c\/li\u003e\n\u003cli data-section-id=\"1wfa3op\" data-start=\"1479\" data-end=\"1589\"\u003eModernized calculation tables reflecting improvements in energy efficiency and alignment with evolving codes\u003c\/li\u003e\n\u003cli data-section-id=\"m6zc69\" data-start=\"1590\" data-end=\"1662\"\u003eRevised ground-fault protection requirements for marinas and boatyards\u003c\/li\u003e\n\u003cli data-section-id=\"ptza4k\" data-start=\"1663\" data-end=\"1783\"\u003eNew guidelines covering the safe use of electric vehicles as backup or emergency power sources for buildings and homes\u003c\/li\u003e\n\u003cli data-section-id=\"1s0ajw8\" data-start=\"1784\" data-end=\"1869\"\u003eReorganization of Article 310 with more user-friendly numbering for ampacity tables\u003c\/li\u003e\n\u003cli data-section-id=\"kntzmc\" data-start=\"1870\" data-end=\"1920\"\u003eNew definition for \u003cem data-start=\"1891\" data-end=\"1905\"\u003ecable bundle\u003c\/em\u003e in Article 725\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"t74ry3\" data-start=\"1922\" data-end=\"1954\"\u003eSignificant New Requirements\u003c\/h3\u003e\n\u003cp data-start=\"1956\" data-end=\"2016\"\u003eThe 2020 NEC introduces important new requirements covering:\u003c\/p\u003e\n\u003cul data-start=\"2018\" data-end=\"3174\"\u003e\n\u003cli data-section-id=\"1trweu9\" data-start=\"2018\" data-end=\"2122\"\u003eExterior emergency disconnects for one- and two-family dwellings to improve emergency responder safety\u003c\/li\u003e\n\u003cli data-section-id=\"yys9nn\" data-start=\"2123\" data-end=\"2218\"\u003eResidential receptacle outlet installation requirements for island and peninsular countertops\u003c\/li\u003e\n\u003cli data-section-id=\"hj7hkk\" data-start=\"2219\" data-end=\"2288\"\u003eSurge protection requirements for services supplying dwelling units\u003c\/li\u003e\n\u003cli data-section-id=\"6pkcc5\" data-start=\"2289\" data-end=\"2368\"\u003eWorking space requirements for housekeeping pads serving electrical equipment\u003c\/li\u003e\n\u003cli data-section-id=\"yggrir\" data-start=\"2369\" data-end=\"2420\"\u003eInstallation of wiring methods in exit enclosures\u003c\/li\u003e\n\u003cli data-section-id=\"i6f6k7\" data-start=\"2421\" data-end=\"2500\"\u003eSizing of supply and load conductors used with adjustable-speed drive systems\u003c\/li\u003e\n\u003cli data-section-id=\"1e3ixgp\" data-start=\"2501\" data-end=\"2600\"\u003eAFCI protection requirements for branch circuits in patient sleeping areas within care facilities\u003c\/li\u003e\n\u003cli data-section-id=\"1cb14w5\" data-start=\"2601\" data-end=\"2689\"\u003eLoad calculations for electric vehicle supply equipment with variable current settings\u003c\/li\u003e\n\u003cli data-section-id=\"w5encg\" data-start=\"2690\" data-end=\"2782\"\u003eWorker safety provisions for identifying power sources associated with disconnecting means\u003c\/li\u003e\n\u003cli data-section-id=\"ihozec\" data-start=\"2783\" data-end=\"2853\"\u003eEgress requirements for spaces containing large electrical equipment\u003c\/li\u003e\n\u003cli data-section-id=\"116uy1l\" data-start=\"2854\" data-end=\"2954\"\u003eGrounding requirements for disconnecting means installed on the supply side of service disconnects\u003c\/li\u003e\n\u003cli data-section-id=\"1tl0u6c\" data-start=\"2955\" data-end=\"3032\"\u003eRequirements for cables installed exposed on ceiling surfaces and sidewalls\u003c\/li\u003e\n\u003cli data-section-id=\"1cqtqmz\" data-start=\"3033\" data-end=\"3174\"\u003eSpecial occupancy and equipment provisions involving splash pads, hazardous classified locations, swimming pools, and other bodies of water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy customers choose us over buying directly from publishers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe provide faster and more reliable service compared to ordering directly from publisher.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSame-day shipping available on eligible orders\u003c\/li\u003e\n\u003cli\u003eTrue overnight shipping options available\u003c\/li\u003e\n\u003cli\u003eFaster order processing and delivery support\u003c\/li\u003e\n\u003cli\u003eProfessional customer assistance for code and standards orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhile publisher orders may typically require 7–10 business days for delivery, we help professionals get critical fire protection standards faster when timing matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"NFPA","offers":[{"title":"New Book \/ No Practice Exam \/ No Pre-Printed Tabs","offer_id":52426854334776,"sku":null,"price":168.99,"currency_code":"USD","in_stock":true},{"title":"New Book \/ No Practice Exam \/ Add pre-printed tabs","offer_id":52426854367544,"sku":null,"price":183.98,"currency_code":"USD","in_stock":true},{"title":"New Book \/ Add Practice Exam \/ No Pre-Printed 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