SpaceCoastBrew
Well-Known Member
I just finished my control panel build and I'm ready to crank the thing on but when I turn the key, I trip my GFCI in my breaker panel. The panel is modeled off of Kal's with the exception that I'm feeding 60A/240V into the panel and my main relay. I have 30A fuses protecting the two heater relays downstream. When I say feeding the panel, I mean I have a 4/4 AWG cable hard wired to the main relay with a plug on the other end.
In my trouble shooting, I've removed circuits from the main relay one at a time with the same result of tripping the GFCI. I then replaced the 240v feed with a 120v feed just to ensure the relay wasn't damaged. I plugged this 120v feed into a GFCI and it did not trip. Everything in the panel worked as I expected. So I now believe that the problem is in my 240 feed cable or how it's connected. I've searched the cable for any damage to the insulation but have found nothing.
I'm using a tap connector to connect my 4 AWG neutral to the neutral bus but I don't see this being an issue. I'm not overly familiar with 240v wiring but I'm at a loss for what the issue may be. Is it possible that I have a leakage on the 120V but not enough to trip the GFI outlet and that its amplified when I try the 240V cable? Any suggestions that might help me narrow this down?
Thanks for the help!
In my trouble shooting, I've removed circuits from the main relay one at a time with the same result of tripping the GFCI. I then replaced the 240v feed with a 120v feed just to ensure the relay wasn't damaged. I plugged this 120v feed into a GFCI and it did not trip. Everything in the panel worked as I expected. So I now believe that the problem is in my 240 feed cable or how it's connected. I've searched the cable for any damage to the insulation but have found nothing.
I'm using a tap connector to connect my 4 AWG neutral to the neutral bus but I don't see this being an issue. I'm not overly familiar with 240v wiring but I'm at a loss for what the issue may be. Is it possible that I have a leakage on the 120V but not enough to trip the GFI outlet and that its amplified when I try the 240V cable? Any suggestions that might help me narrow this down?
Thanks for the help!