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Re: Electrical power to pole shed
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Posted by Gary Schafer on September 06, 2006 at 17:35:35 from (63.135.138.185):
In Reply to: Electrical power to pole shed posted by Nick R (Wi) on September 06, 2006 at 05:56:44:
If I remember right, if you only run a single circuit to an out building (a hot, neutral and ground wire for a light and an outlet as an example) then you do not have to have a ground rod at the out building. More than a single circuit requires ground rods at the out building. A sub panel in the same building as the main distribution panel requires 4 wires run to it and the neutral / ground bond left open in the sub panel. A sub panel in a detached building only requires 3 wires, the two hot wires and a neutral. The neutral is bonded in the sub panel along with the required ground rods at the outbuilding. In this situation there are not supposed to be any other metallic connections between the main and detached building, no phone lines, water lines etc. Otherwise 4 wires are needed between main and outbuildings and neutral and ground bonds left open at the sub panel but a local ground rod is still required at the outbuilding and it is tied to the ground bus of the sub panel along with the ground wire from the main panel. You can always tie as many grounds as you like to the ground system in any case anywhere.
It is only sometimes that the ground and neutral are not to be bonded together. I.e. with 4 wire sub panel connections. Regards
Gary
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