I plan on replacing the GFCI breaker I already had one that was getting flakey and was tripping whereas its.
Christmas lights trip gfci when it rains. Plug the Christmas lights into your Ground Fault Circuit Interrupter GFCI or outdoor outlet. If you find yourself using an extension cord year-round you should consider running a new electrical line to where you need it. Dec 2 2020.
Broken exterior light fixture. Removing the GFCI outlet in the bathroom was the only thing that worked so that the lights stay on when it rains. If this happens and the power is on the circuit will trip causing the lights and décor to go out.
If the GFCI outlet trips off after the lights have been on for a while this may indicated that the heat of the lights is causing snow or ice to melt and create moisture which can cause the GFCI to trip off. I bet that your electricians are too. Wrap Teflon tape electrical tape securely and carefully around the plugs completely coating the plug to prevent water from getting in and effectively creating a water-tight seal.
Additional resources about GFCI Outlets and Christmas Lights. Or wait until it rains again and unplug 12 of the lights this will narrow down your search. I added a plastic spacer so the metal support wasnt grounded and the trips went away.
They seemed to work fine when it is dry outside. When it wasnt raining everything worked fine with or without the GFCI. I dont know how to correct the problem.
Water and electricity dont mix. Keep in mind though that even if a piece of equipment that IS plugged in is causing the GFI to trip when it rains that may not necessarily mean the equipment is faulty. The lights are designed for outdoor use.

