Electrical Equipment Working Spaces

LV Working Spaces

Required working space at the front of electrical equipment:

PEC Table 1.10.2.1 (a)(1) Working Spaces

Where rear access is required to work on nonelectrical parts on the back of enclosed equipment, a minimum horizontal working space of 750mm shall be provided.

MV & HV Working Spaces

Distances shall be measured from the live parts, if such are exposed, or from the enclosure front or opening if such are enclosed.

PEC Table 1.10.3.5(a) Minimum Depth of Clear Working Space at Electrical Equipment

NEC Table 110.34(A)
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