This is my first time posting here. I hope someone can give me some help.
The issue I have is new construction wiring for a driveway light and outdoor outlets at the head of the driveway. The contractor wired a sub-panel and buried the wire (8 awg 3 + gnd). I would like to have two 20 amp GFCI circuits, one for the lamps and one for two outlets. The contractor had left a single pole 20 amp GFCI breaker in the sub-panel for me to use.
I initially wired this up to the two GCFI outlets (overkill) and everything was OK. So since I have another 8 awg wire buried I thought I would just replace the single pole GFCI with a 2 pole (expensive) and have two circuits. The problem is the 2 pole GFCI breaker trips with no load. The single pole GFCI breaker worked fine when wired to just the outlets.
I did see that the 2 pole breaker stated that wire lengths should be less than 250' and I am at 350'. Could this be my problem? If so what can I do? Do I need to use GFCI breakers? Attached is a crude drawing of how it is currently wired.
Thanks in advance]1