This checklist covers regulations issued by the U.S. Department of Labor, Occupational Safety and Health Administration (OSHA) under the general industry standards subpart S 29 CFR 1910.304 and 1910.307 and the construction standards subpart K CFR 1926.404 and 1926.407. It applies to all electrical use systems. This checklist does not cover installations in ships, watercrafts, railway rolling stock, aircrafts, or automotive vehicles other than mobile homes and recreational vehicles. The regulations cited apply only to private employers and their employees, unless adopted by a State agency and applied to other groups such as public employees. Definitions of terms in bold type are provided at the end of the checklist to help you understand some of the questions.
Questions marked with this symbol may require the help of an outside expert.
This checklist does not address regulations dealing with outside conductors, 600 volts, nominal, or less; services to buildings; overcurrent protection (fuses and circuit breakers) for over 600 volts, nominal; and grounding for over 1,000 volts. If any of these conditions are encountered, consult the OSHA regulations.