Standard Interpretations
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OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.
- 1926.405 - Acceptability of heat shrinkable insulating covers in making splices. - 07/16/1986
- 1926.405 - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405 - Compliance of type SJTW flexible cords with 1926.405(a)(2)(ii)(J) and use on construction sites. - 03/29/2004
- 1926.405 - Interpretation of the OSHA construction standards for electrical branch circuits. - 11/21/1995
- 1926.405 - Portable electric lighting. - 03/28/1995
- 1926.405 - Temporary lighting branch circuits. - 09/24/1987
- 1926.405 - Whether an employer can repair an extension cord under 29 CFR 1926, Subpart K. - 04/12/2010
- 1926.405(a)(2) - Maximum allowable distance between supports for temporary electrical wiring. - 05/13/2004
- 1926.405(a)(2) - Use of compressed air above 30 p.s.i. for cleaning purposes;nonmetallic-sheathed cable for temporary wiring. - 10/04/2000
- 1926.405(a)(2)(ii)(B) - Use of compressed air above 30 p.s.i. for cleaning purposes;nonmetallic-sheathed cable for temporary wiring. - 10/04/2000
- 1926.405(a)(2)(ii)(G) - Clarification of temporary vs. portable lighting. - 04/06/1976
- 1926.405(a)(2)(ii)(I) - Protection of flexible cords when hung in tunnel shafts. - 07/08/1991
- 1926.405(a)(2)(ii)(J) - Compliance of type SJTW flexible cords with 1926.405(a)(2)(ii)(J) and use on construction sites. - 03/29/2004
- 1926.405(a)(2)(ii)(J) - Temporary lighting strings used on construction sites. - 09/16/1981
- 1926.405(b)(2) - Electrical standard requirements concerning covers for electrical pull boxes, junction boxes, and fittings. - 10/03/2002
- 1926.405(b)(3) - Electrical standard requirements concerning covers for electrical pull boxes, junction boxes, and fittings. - 10/03/2002
- 1926.405(b)(3)(ii) - Electrical standard requirements concerning covers for electrical pull boxes, junction boxes, and fittings. - 10/03/2002
- 1926.405(g) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g) - Use of flexible cords for connection of appliances; scaffold base plates. - 07/20/1998
- 1926.405(g)(1)(i) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(A) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(B) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(C) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(D) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(E) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(F) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(G) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(i)(H) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(iii) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(1)(iii)(B) - Acceptable uses of flexible temporary cords/cables on construction sites. - 01/16/2003
- 1926.405(g)(2) - Acceptable job-made extension cords. - 06/17/1992
- 1926.405(g)(2)(iii) - Repair requirements for the cord plug (attachment plug) of double-insulated tools. - 05/19/2003
- 1926.405(g)(2)(iii) - Using electrical tape to repair minor damage to the outer jacket of an extension cord. - 12/16/1998
- 1926.405(g)(2)(iii) - Whether an employer can repair an extension cord under 29 CFR 1926, Subpart K. - 04/12/2010
- 1926.405(g)(2)(iv) - Acceptable job-made extension cords. - 06/17/1992
- 1926.405(g)(2)(v) - Acceptable job-made extension cords. - 06/17/1992
- 1926.405(g)(2)(v) - Contractor shop-made extension cords. - 03/03/1992
- 1926.405(j)(1)(i) - Can energized electrical outlets and switches be taped when rooms are painted - 11/02/2015
- 1926.405(j)(1)(i) - Electrical standard requirements concerning covers for electrical pull boxes, junction boxes, and fittings. - 10/03/2002