If the cover for an underground pull box used for circuits over 600v is not locked, bolted, or screwed into place, then it must weigh equal to - correct answer 100 pounds



The maximum total voltage droop on a branch circuit is - correct answer 3%



the floors of vaults in contact with the earth shall be of concrete that is not less then - correct answer 6 inches thick



according to the NEC bare live parts are guarded from the public in the following methods except - correct answer protected...
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