UNCCShannon

So is this essentially taking the bonded connection in the main circuit panel and making it floating to get around the ground fault issue with the powerboost? Reason I ask is I installed a pro tran on our panel not knowing of the powerboost issue and it having a bonded neutral just like the house panel (newer construction). Now I feel stuck and am trying to find a workaround that won't kill me like unhooking the ground.

blkZ28spt

The workaround is to hire a real electrician to do whatever needs to be done

Hullguy

There isn’t a work around that is safe and to National Electrical Code

Donas

I hate to revive such an old thread, but can one of you electricians give me a little guidance as to how to help the electrician that I've hired. He has removed a group of breakers that I want the truck to power from the main panel and put them in a sub-panel controlled by a Generac Transfer Switch. Everything works fine if the ground is disconnected, when he connects the ground, it trips the truck. At this point of the the install, what needs to be done to resolve this issue?

imnuts

It's hard to tell without seeing the panel, but did the electrician move the neutral wires over to the new panel so that they are not bonded with the ground in the main panel? There's still a neutral/ground bond somewhere that needs to be found and corrected.

Donas

Here is the sub panel, is this what you wanted to see? I've got the electrician scheduled to come back out for about the 6th visit later this week; I'm really hoping to be able to steer him in the right direction.

imnuts

I'm assuming this entire panel is fed from ProPower, how do you energize it? I ask because that doesn't look like the Generac neutral switching panels, or any of the other bonded generator panels I've seen mentioned in the past. Are you putting the truck neutral in to the panel when it's hooked up or leaving whatever is in place there? Is there a neutral/ground bond in the panel? I don't see one, but it's difficult to tell on my phone.

Donas

Not gonna lie, I don't know crap about the electrical stuff, you are asking a bunch of questions I have to idea about. Here is a picture of all my panels, the one marked F150 is the panel pictured above. Also, a pic of the inside of the Generac. It receives normal line power regularly but remains powered via Generac transfer switch next to it when the truck is.

Everything works fine if the ground is disconnected on either end of the cable coming from the plug in the garage to the Generac. Obviously, the code inspector didn't like that idea, lol.



connected via plug in the garage.

imnuts

Ok, I think I see the issue, but again, the pictures are hard to view on my phone. The transfer switch is only swapping the two hot legs, all the neutrals are connected together. There's probably a neutral-ground bond in one of the panels causing your issue. I'm not sure if there will be a way to make it work without a different transfer switch, but the electrician can hopefully help you out.

Donas

Ok, thanks for taking the time to look at the pics. I will relay what you said to the electrician. If you think you can give any further diagnosis with different pictures, I can take whatever is needed. Thanks.