WAC 296-46B Electrical Safety Standards, Administration, and Installation - Exam Friendly Version - Part A - NEC Installation Amendments, Standards, Inspections, and Definitions

Sep 23, 2026

Uploaded by nayy☆

Washington State L&I Electrical Program provides an exam-friendly, web-referenced version of WAC 296-46B. The material organizes electrical safety requirements covering NEC installation amendments, adopted standards, and inspection processes, followed by general definitions and installation requirements. It also outlines equipment examination and product listing concepts, discusses identification and deterioration-related provisions, and sets out detailed requirements for branch circuits, feeders, services, GFCI rules, grounding fault protection, and relevant calculation methods. It concludes with standards addressing outside circuits and higher-voltage systems.

LanguageEnglish

CategoryExam

FormatPDF

Pages148

Reading Time6 h 13 min

AccessFree to download

PART A-NEC INSTALLATION AMENDMENTS, STANDARDS, INSPECTIONS, AND DEFINITIONS

WAC 296-46B-010 General

WAC 296-46B-100 General definitions

WAC 296-46B-110 General requirements for electrical installations

WAC 296-46B-210 Branch circuits not over 1,000 volts ac, 1,500 volts dc nominal

WAC 296-46B-215 Feeders

WAC 296-46B-220 Branch circuit, feeder, and service calculations

WAC 296-46B-225 Outside branch circuits and feeders

WAC 296-46B-230 Services

WAC 296-46B-235 Branch circuits, feeders, and services over 1,000 volts ac, 1,500 volts dc nominal

WAC 296-46B Electrical Safety Standards, Administration, and Installation State of Washington L&I Electrical Program Exam Friendly Version Last update: September 12, 2025 Scan the QR code for the official version or visit: [https://apps. leg.wa.gov/wac/default.aspx?cite=2](https://apps. leg.wa.gov/wac/default.aspx?cite=2)[ ](https://apps. leg.wa.gov/wac/default.aspx?cite=2)96-46B Electrical Program On [the Web:](the Web: www.lni.wa.gov/Electrical)[ ](the Web: www.lni.wa.gov/Electrical)[www.lni.wa.gov/Electrical](the Web: www.lni.wa.gov/Electrical)[ ](the Web: www.lni.wa.gov/Electrical)F500-142-000 (9-2025) Table of Contents PART A-NEC INSTALLATION AMENDMENTS, STANDARDS, INSPECTIONS, AND DEFINITIONS ..............10 WAC 296-46B-010 General....................................................................................................... 10 Adopted standards................................................................................................................. 10 Inspections-General............................................................................................................. 11 Inspection move on buildings and structures........................................................................ 12 Wiring methods for designated building occupancies........................................................... 13 Traffic management systems................................................................................................. 13 WAC 296-46B-100 General definitions..................................................................................... 15 WAC 296-46B-110 General requirements for electrical installations....................................... 21 003 Examination, identification, installation, use, and listing (product certification) of equipment.............................................................................................................................. 21 011 Deteriorating agents....................................................................................................... 22 022 Identification of disconnecting means............................................................................ 22 030 Over 1,000 volts-General.............................................................................................. 22 WAC 296-46B-210 Branch circuits not over 1,000 volts ac, 1,500 volts dc nominal................ 22 008(A) Dwelling units GFCI requirements.............................................................................. 22 008(B) Other than dwelling units-GFCI requirements......................................................... 22 011 Branch circuits................................................................................................................. 23 013 Ground fault protection of equipment........................................................................... 23 025 Common area branch circuits......................................................................................... 23 052 (A)(2) Dwelling unit receptacle outlets........................................................................... 23 052 (C)(2) Island and peninsular countertop and work surfaces........................................... 23 063 Equipment requiring servicing........................................................................................ 23 WAC 296-46B-215 Feeders....................................................................................................... 23 002 Minimum rating and size................................................................................................ 23 005 Diagrams of feeders........................................................................................................ 24 010 Ground fault protection testing...................................................................................... 24 WAC 296-46B-220 Branch circuit,

FAQs

What is the document and how is it linked to the official WAC version?

The document is an “Exam Friendly Version” of WAC 296-46B from the State of Washington L&I Electrical Program. It instructs readers to scan a QR code for the official version or visit the provided web link.

What topics are covered in Part A of WAC 296-46B?

Part A covers NEC installation amendments, standards, inspections, and definitions. It includes adopted standards, general inspection guidance, and definitions used throughout the electrical program requirements.

How does the document organize electrical installation requirements by electrical system type?

It structures requirements by system sections such as branch circuits (including GFCI requirements), feeders, branch circuit/feeder/service calculations, outside circuits, and services. It also includes provisions for equipment requiring servicing and higher-voltage systems over 1,000 volts AC / 1,500 volts DC nominal.

Sep 23, 2026

Uploaded by nayy☆

WAC 296-46B Electrical Safety Standards, Administration, and Installation - Exam Friendly Version - Part A - NEC Installation Amendments, Standards, Inspections, and Definitions_Page 1

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