I have a fire pump that will be fed from the utility transformer. The pump is located 500' away. The pump is 3 phase 480 volt (no neutral of course). Do I need to pull a ground conductor as well in this conduit or just the 3 hots? If I do pull a ground what would I do with it the the transformer? Tie it to the ulitities ground rod?
Does 2008NEC 250.4 (A) (5) apply?
Thanks
Does 2008NEC 250.4 (A) (5) apply?
Thanks