Osha 1926

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Zog..I appreciate your reply but I am sure I can find the OSHA website on my own. I need for you to be more specific such as the specific standard because I cannot find MAD in the construction standards, however it is listed in the general industry. Thank you
 
Pardon my ignorance, but what is MAD?
 
The approach distances are shown in NFPA 70E. 70E is refered to by OSHA for enforcement.
70E has many references to approach boundaries. The table related to shock protection is:
Table 130.2(C) Approach Boundaries to Energized Electrical Conductors or Circuit Parts for Shock Protection
 
I don't think it is in 1926, but this is in 1910:

1910.333(c)(3)(ii)(C)

The person is insulated from all conductive objects at a potential different from that of the energized part.

TABLE S-5 - APPROACH DISTANCES FOR QUALIFIED
EMPLOYEES - ALTERNATING CURRENT

______________________________________________________________
|
Voltage range (phase to phase) | Minimum approach distance
__________________________________|___________________________
|
300V and less ....................| Avoid Contact
Over 300V, not over 750V .........| 1 ft. 0 in. (30.5 cm).
Over 750V, not over 2kV ..........| 1 ft. 6 in. (46 cm).
Over 2kV, not over 15kV ..........| 2 ft. 0 in. (61 cm).
Over 15kV, not over 37kV .........| 3 ft. 0 in. (91 cm).
Over 37kV, not over 87.5kV .......| 3 ft. 6 in. (107 cm).
Over 87.5kV, not over 121kV ......| 4 ft. 0 in. (122 cm).
Over 121kV, not over 140kV .......| 4 ft. 6 in. (137 cm).
__________________________________|___________________________
 
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