Installed Generac Transfer Switch and still getting ground fault

[sabot37]

Hoping the community can help here. I've read tons of similar forum posts but having trouble finding a code-compliant solution. Got the Generac 6852 Transfer Switch installed by my electrician, and we're still getting a ground fault as soon as we switch over to Pro Power. Has anyone run into this issue on the install and care to share what the cause & fix was?

• I know we can end this nightmare by disconnecting the ground but I want to do this the code compliant way if we can
• To test the truck outlet, we plugged Sawzall into bed via nema outlet, works fine (I have a nema extension cable that splits into 4 12v outlets)
• We shut off Main, switched off every breaker in Generac panel except for one outlet with that same Sawzall plugged in, and truck ground faults as soon as we use the same tool

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[Maquis]

You have an unintended ground to neutral connection (or Generac neutral to house panel neutral) somewhere. You did move all neutrals to the Generac that are associated with the circuits now in the Generac, correct?

 

[sabot37]

Yes we ran hot and neutral wires over. Came across this helpful thread just now, going to try order of operations and if not that, sounds like we gotta chase down a neutral touching ground somewhere...

 

[hturnerfamily]

is one of the outlet/circuits a GFCI circuit?

 

[EVpower]

I understand the Generac panel has a ground to neutral bond screw. It might be green on the neutral buss (I have not seen the panel first hand) Double check that it has been removed.

Steve

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