208V 30A GFCI Breaker Trip

[topgone]

I'm going to be honest and say stuff that others may not like:


Physics does not allow the use of 6ma GFCIs in large appliances, longer runs, or a combination of both. Capacitive and resistive leakage will in one way or another lead to tripping.

And 85 feet is not long run to me! My own experience is that when you buy equipment that are a dime a dozen, you'll get GFCIs trips. Once, it was a cheap CFL blacking out the house!
@Lbartowski, please get/secure/borrow another brand of coffee maker to see if your problem disappears.

 

[kwired]

This is a dedicated circuit about 85' to a coffee maker.

Change out the coffee maker, changed out the breaker, pulled in new wire. Still tripping randomly.

What's next? Would XHHW wire help with "leakage"? I actually disconnect the device from the branch wiring and capped the wires off. Still trips, so it's not the coffee maker. I'm at a loss.

That right there says to me not the coffee maker also. some other load or RF is likely the issue, presuming it does reset but trips at seemingly random times. If won't reset at all with no load wires connected may be malfunctioning GFCI.

Could try to energize it at some other location to see if it holds there to help eliminate any on site interference issues.

Add: I presume you disconnected branch wires from the GFCI breaker, if you just capped the load end of them you still could have leakage somewhere on the circuit. - megger might be your friend if that is what is going on.