Working Space, Entrances, and Illumination - More Than 600 Volts

Where energized parts are exposed, the minimum clear working space cannot be less than 6.5 feet high or less than three feet wide. In all cases, the working space must be adequate to permit at least a 90-degree opening of doors or hinged panels.

There must be at least one entrance, no less than 24 inches wide and 6.5 feet high, to give access to the working space around electrical equipment. Except when they are observed by a qualified person at all times, the entrances to any building, room, or enclosure containing exposed live parts or conductors operating at more than 600 volts, nominal, must be kept locked. Refer to 29 CFR 1926.404 for a complete listing of entrance and access requirements for working spaces around equipment operating at more than 600 volts.

All working spaces around electrical equipment must be illuminated. The points of control must be located in a place where people are prevented from contacting any live part or moving part of the equipment while they are controlling the lights.

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