Standard Interpretations
Standard Interpretations are letters or memos written in response to public inquiries or field office inquiries regarding how some aspect of or terminology in an OSHA standard or regulation is to be interpreted and enforced by the Agency. These letters provide guidance to clarify the application of an established OSHA standard, policy, or procedure, but they may not, in themselves, establish or revise OSHA policy or procedure or interpret the OSH Act. They must specifically cite the source policy or procedure document they interpret.
- 1926.403 - Acceptability of heat shrinkable insulating covers in making splices. - 07/16/1986
- 1926.403 - Approval of Portable Generators by a qualified testing laboratory. - 10/01/1991
- 1926.403 - Portable and vehicle mounted generators must be "approved" on the job site. - 06/28/1993
- 1926.403 - Repair requirements for the cord plug (attachment plug) of double-insulated tools. - 05/19/2003
- 1926.403 - Whether extension cords may be repaired and returned to use. - 04/04/2010
- 1926.403(a) - All electric tools need to be tested by a qualified national testing laboratory and be listed and labeled - 01/28/1994
- 1926.403(a) - Approval of temporary power for a construction site. - 01/08/1992
- 1926.403(a) - Contractor shop-made extension cords. - 03/03/1992
- 1926.403(a) - Electric power tools: grounding, NRTL approval, and suitable circuit connection. - 06/12/2000
- 1926.403(a) - Repair requirements for the cord plug (attachment plug) of double-insulated tools. - 05/19/2003
- 1926.403(a) - Tunnel boring machine equipment. - 12/09/1993
- 1926.403(a) - Using electrical tape to repair minor damage to the outer jacket of an extension cord. - 12/16/1998
- 1926.403(a) - Whether extension cords may be repaired and returned to use. - 04/04/2010
- 1926.403(b)(1) - Maximum allowable distance between supports for temporary electrical wiring. - 05/13/2004
- 1926.403(b)(1)(i) - Acceptable job-made extension cords. - 06/17/1992
- 1926.403(b)(1)(i) - Contractor shop-made extension cords. - 03/03/1992
- 1926.403(b)(2) - Extension cord manufacturers warning and compliance with electrical equipment - Installation and use. - 09/28/2015
- 1926.403(e) - Using electrical tape to repair minor damage to the outer jacket of an extension cord. - 12/16/1998
- 1926.403(g) - Contractor shop-made extension cords. - 03/03/1992
- 1926.403(i)(2)(i) - Use of caution tape or rope to barricade a crane's swing radius; guarding of lug connectors on portable welders - 03/10/2004