Standby Generator on Line Side of Main

[LarryFine]

Thanks guys. Just to be clear ... the ATS will be the new main - the ATS EGC will have bonded nuetrals and grounds and will be run back to the current service entrance grounding electrode system.

Ground and nuetral at the existing equipment (no longer the service entrance) will need to be seperated ... correct ?

Correct. Basically, you have to replace SE with SER. You're also supposed to replace 3-wire major appliance conductors, receptacles, and cords, and separate the appliances' bond connections.

I once had to delve deep into an older dryer to find where in the wiring harness the white and green condcutors were joined. I cut the jumper and capped the neutral side of the cut.

 

[RUWired]

Not correct, if the ATS is in or on the same building.

Right Larry, I was thinking the ats was free standing away from the building when i said that.
Rick

 

[steveng]

No. As with any time an existing panel becomes a sub-panel, you must separate the neutrals from the EGC's.
__________________
Larry B. Fine
Master Electrician
Richmond, VA

This Forums Most Censored Member (and proud of it!)

larry, could you give the reason as to why this is not allowed?
i have seen this before in other sub panels.