Answer: When the equipment is 800A or more and the personnel doors are with 25 ft of the equipment. Explanation: Section 110.26(C)(3) states, "Where equipment rated 800A or more that contains ...
Explanation: Section 250.52(A)(1) requires the pipe to be in direct contact with the earth for a minimum of 10 ft but no minimum depth is required. John Lupacchino is a senior design engineer with ...
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