Grounding Electrode System for Generator and Building

[al]

For a Generator and a Building that are seperate strucures can the GES be the same for both structures? The generator is connected SDS (neut-grnd bond at gen) with no neutral run to transfer switch as there are no L-N loads. The transfer switch and service are at the building.

 

[Joe Villani]

Ges

Ges

How far is the generator from the building?

Take a look at 250.30(A)(7). It talks about the grounding electode being as near as practicable and perferably in the same area. This then becomes an interpretation issue with your inspector. I would probably check with him 1st or just drive some ground rods.

Joe

 

[al]

Distance

Distance

Joe, the generator is about 75' from the building

 

[raider1]

Joe, the generator is about 75' from the building

I would say that the generator would need it's own grounding electrode system separate from the building.

Chris

 

[e57]

Joe, the generator is about 75' from the building

Naaaa - you need some sort of electrode there....

If you have UG conduit - depending on depth you could just drop some plates right in the hole...

 

[cowboyjwc]

I agree that you need to ground the generator. Separately derived system.

 

[al]

Parellel Grounding Path?

Parellel Grounding Path?

Obviously the GEC would be a parallel path with the EGC for fault currents from the generator. Is this a concern?

 

[DARUSA]

Do the service neutral have any fisical connection to de GEN neutral? If not you should be trate the GEN as a SDS . (Bonding jumper,GEC and Stell bonding will require )