This Handbook is approved for use by the Office of Health, Safety and Security and is available to all DOE components and their contractors.This NFPA Electrical Safety 2018 book replaces the DOE Electrical Safety Handbook that was originally issued in 1998, and revised in 2014. DOE handbooks are part of the DOE directives system and are issued to provide supplemental information regarding the Department's expectations for fulfilling its requirements as contained in rules, orders, notices, and regulatory standards. The handbooks may also provide acceptable methods for implementing those requirements. Handbooks are not substitutes for requirements, nor do they replace technical standards that are used to describe established practices and procedures for implementing requirements.This updated handbook contains DOE-developed explanatory material in support of national electrical safety codes and standards, including those referenced in the Code of Federal Regulations (CFR) in 10 CFR 851, Worker Safety and Health Program. Sections of this handbook were revised and relocated within the handbook for improved clarity of information. This document references the most recent version of each code and standard at the time of development, recognizing that newer versions are invariably improved and provide increased safety over previous versions.