Running a new electrical feeder to the garage.

[DustynF]

To avoid harmonic distortion should I float the ground bar from the neutral bar inside the panel in the garage? I am already driving a grounding rod at the panel outside the the garage. I have a 200amp service in the house that will be feeding the garage. My run is going to be about 80 feet. I have a 100amp CH box in the garage. Anything else I should be aware of?

 

[Stuart in MN]

I'm not sure what your concern about harmonic distortion is, but the neutral and ground bar in the garage panel do need to be isolated from each other. The only point where neutral and ground should be connected is at the main service entrance back at the house.

 

[VHF]

And of course you need 4 wires feeding your garage subpanel. Two ground rods 6' apart are generally required.

 

[mrb]

main disconnect in the garage if you have more than 6 handles in the subpanel

 

[DustynF]

Thanks Guys. I can daisy chain the two grounding rods with a #6 or 8 right?

 

[Charles (in GA)]

Thanks Guys. I can daisy chain the two grounding rods with a #6 or 8 right?

So long as the ground wire is one un-interrupted run. There are ways around this requirement, but it is best to simply not have any splices in the ground wire. Be sure to use approved connectors at the ground rods.

Charles