#	Letters of Interpretation
1	08/17/2026 - 1910.333(b)(2)(iii)(B) - Clarification Regarding the Requirements of OSHA's Selection and Use of Work Practices Standard for Electrical Work
2	08/17/2026 - 1910.333(b)(2)(iii)(A) - Clarification Regarding the Requirements of OSHA's Selection and Use of Work Practices Standard for Electrical Work
3	08/17/2026 - 1910.333(b)(2)(iii) - Clarification Regarding the Requirements of OSHA's Selection and Use of Work Practices Standard for Electrical Work
4	08/17/2026 - 1910.333, 1910.333(b)(2)(iii), 1910.333(b)(2)(iii)(A), 1910.333(b)(2)(iii)(B) - Clarification Regarding the Requirements of OSHA's Selection and Use of Work Practices Standard for Electrical Work
5	11/24/2025 - 1910.333(b)(2) - Clarification Regarding the Requirements of 29 CFR 1910.147
6	08/25/2025 - 1910.333(c)(2) - Electrical Busway Hot Swappable Plug-In Units
7	08/25/2025 - 1910.333(c) - Electrical Busway Hot Swappable Plug-In Units
8	08/25/2025 - 1910.333(a)(2) - Electrical Busway Hot Swappable Plug-In Units
9	08/25/2025 - 1910.333(a)(1) - Electrical Busway Hot Swappable Plug-In Units
10	08/25/2025 - 1910.333, 1910.333(a)(1), 1910.333(a)(2), 1910.333(c), 1910.333(c)(2) - Electrical Busway Hot Swappable Plug-In Units
11	08/05/2015 - 1910.333(c) - Lockout/tagout of electrical hazards by workers who install, maintain, repair or replace premises wiring systems.
12	08/05/2015 - 1910.333(b) - Lockout/tagout of electrical hazards by workers who install, maintain, repair or replace premises wiring systems.
13	08/05/2015 - 1910.333(b) - Lockout of tagout requirements for electrical hazards
14	12/12/2012 - 1910.333(b)(2)(iv)(B) - Whether an LED type device ca be used for the isolation and deenergization verification requirements of 1910.147 and 1910.333.
15	12/12/2012 - 1910.333(b)(2)(iii)(D) - Whether an LED type device ca be used for the isolation and deenergization verification requirements of 1910.147 and 1910.333.
16	12/12/2012 - 1910.333(b)(2) - Whether an LED type device ca be used for the isolation and deenergization verification requirements of 1910.147 and 1910.333.
17	12/12/2012 - 1910.333(b) - Whether an LED type device ca be used for the isolation and deenergization verification requirements of 1910.147 and 1910.333.
18	12/12/2012 - 1910.333, 1910.333(b), 1910.333(b)(2), 1910.333(b)(2)(iii)(D), 1910.333(b)(2)(iv)(B) - Whether an LED type device ca be used for the isolation and deenergization verification requirements of 1910.147 and 1910.333.
19	01/29/2007 - 1910.333 - Detachable vs. permanent side shields for safety glasses; modifications to safety glasses.
20	12/19/2006 - 1910.333(a)(1) - "Continuous industrial processes" and the infeasibility of de-energizing equipment under 29 CFR 1910.333.
21	12/19/2006 - 1910.333, 1910.333(a)(1) - "Continuous industrial processes" and the infeasibility of de-energizing equipment under 29 CFR 1910.333.
22	11/14/2006 - 1910.333(b)(2) - OSHA requirements for warning signs and protection from electric-arc-flash hazards and compliance with NFPA 70E-2004.
23	11/14/2006 - 1910.333(a)(1) - OSHA requirements for warning signs and protection from electric-arc-flash hazards and compliance with NFPA 70E-2004.
24	11/14/2006 - 1910.333, 1910.333(a)(1), 1910.333(b)(2) - OSHA requirements for warning signs and protection from electric-arc-flash hazards and compliance with NFPA 70E-2004.
25	07/28/2006 - 1910.333(c)(2) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
26	07/28/2006 - 1910.333(b)(2)(iii)(E) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
27	07/28/2006 - 1910.333(b)(2) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
28	07/28/2006 - 1910.333(b) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
29	07/28/2006 - 1910.333(a)(2) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
30	07/28/2006 - 1910.333(a)(1) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
31	07/28/2006 - 1910.333, 1910.333(a)(1), 1910.333(a)(2), 1910.333(b), 1910.333(b)(2), 1910.333(b)(2)(iii)(E), 1910.333(c)(2) - Clarification about 29 CFR 1910.333 and 29 CFR 1910.147 as they relate to work inside an electrical panel and on related equipment.
32	10/27/2005 - 1910.333(b)(2) - Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard.
33	10/27/2005 - 1910.333(b)(1) - Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard.
34	10/27/2005 - 1910.333(a)(2) - Acceptability of using a light switch as a disconnecting means for the electrical lockout/tagout standard.
35	09/26/2002 - 1910.333 - Use of ANSI C2-1997 as guidance for protecting employees working near insulated shielded conductors
36	07/08/2002 - 1910.333 - Use of verification tags for lockout.
37	11/19/2001 - 1910.333(c)(2) - Qualifications for resetting circuits or replacing fuses; electrical enclosures must be approved.
38	11/16/2000 - 1910.333(b) - Applicability of OSHA's LOTO standards; isolation and verification procedures.
39	07/10/2000 - 1910.333(b)(2)(v)(C) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures.
40	07/10/2000 - 1910.333(b)(2) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures.
41	07/10/2000 - 1910.333(a)(1) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures.
42	07/10/2000 - 1910.333, 1910.333(a)(1), 1910.333(b)(2), 1910.333(b)(2)(v)(C) - Evaluation of proposed modifications to the Bureau of Prisons' Lockout/Tagout (LOTO) procedures.
43	03/22/2000 - 1910.333(b) - Lockout/tagout: preferred means of energy isolation; non cord-and-plug powered equipment.
44	05/20/1999 - 1910.333 - Shutdown and restoration of power to equipment for a phase-to-ground condition.
45	06/22/1998 - 1910.333(a)(1) - Training and PPE for employees performing tests on equipment.
46	05/20/1996 - 1910.333 - Letter requesting interpretation of the OSHA electrical standards as they apply to employees using insulated hand tools
47	02/26/1996 - 1910.333 - Minimum approach distances
48	02/07/1996 - 1910.333(a)(1) - Safety electrical work practices; motor disconnects;work clearances.
49	12/30/1993 - 1910.333 - Eyeglasses with exposed metal parts.
50	09/09/1993 - 1910.333(c)(2) - Qualified employee requirements for the servicing and maintenance of electrical equipment.
51	09/09/1993 - 1910.333(b) - Qualified employee requirements for the servicing and maintenance of electrical equipment.
52	03/17/1993 - 1910.333 - Rulings or requirements for employees in the electrical trade to wear steel-toe shoes.
53	09/11/1992 - 1910.333 - Nonconductive siderails for portable ladders for private or contractual fire departments.
54	04/28/1992 - 1910.333 - Minimally acceptable levels of illumination; Resistor banks on overhead cranes; Overhead lines; Protective gloves on energized equipment.
55	09/07/1990 - 1910.333 - Applicability of the new Electrical Safety final rule, Subpart S, to the construction industry