I am looking at a job to repair fire damage to a detached 3 unit building that had a 3 wire sub panel .This building is a motel with several seperate or detached 3 unit buildings.When I rewire 1 building do I need to refeed sub panel with 4 wire to seperate grounds & netraul.I am thinking because it is detached building I can drive grounds & bond all grounded conductors together.
seperate grnd for sub panl detached bldng
- Thread starter jjackson
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charlie
Senior Member
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- Indianapolis
Re: seperate grnd for sub panl detached bldng
You will have to separate the grounds and neutrals and also establish a grounding electrode system. Run the GEC from the grounding bar to the grounding electrode. Do not connect the neutral and grounds together.
You are permitted to run a feeder without a grounding conductor and treat the feeder like service only where no metallic paths exist between the building being fed to the building where the feeder is coming from. That situation just about doesn't exist.
You will have to separate the grounds and neutrals and also establish a grounding electrode system. Run the GEC from the grounding bar to the grounding electrode. Do not connect the neutral and grounds together.
You are permitted to run a feeder without a grounding conductor and treat the feeder like service only where no metallic paths exist between the building being fed to the building where the feeder is coming from. That situation just about doesn't exist.
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