Too many GFIC's.??
I recently installed a waterfall in the back yard. It has two pumps, 4amp each, running off of a 20 amp circuit, and wired with 12/2 wire. it also has six underwater lights.
last week I unplugged one pump to see how well it would funtion on one. When I did that, the lights got brighter..! My first thoughts were, it's overloaded, or has a bad connection somewhere. It shouldn't be close to overloaded with pumps running at just under 8 amps total. The lights are tiny, low voltage lights.
In troubleshooting the problem, I discovered the guy who did the wiring has GFICs on all of the outlets..! Usually there is only one GFIC to protect an entire circuit. I don't see any other problems in the system, so I was wondering if the extra GFIC's are causing the problem..?
I might be calling out a knowledgable electrician, but wondered if anyone could shed some light on the subject.
Thanks in advance...