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I have a circuit that trips periodically, but I can't trace the cause. Here's the set-up:
15a pancake breaker, through 14/2 wire for about 25' to a duplex outlet. The duplex drives two devices. One device is the timer for the irrigation, minimal load, the other is a 900w transformer for my landscape lighting. From there, the power goes to a motion sensitive cut-off switch. (The kind that turns the lights OFF after inactivity, but won't turn them ON without someone pressing the button.) The switch controls a single bank of 4 can lights (75w each)
The problem I have is that the breaker trips occasionally. There is no rhyme or reason that I can find. The lights may be on or off, although they are rarely on.
I'm running out of ideas. I replaced the breaker, thinking perhaps I just got a bad one. No dice. Any thoughts are appreciaited. I'm trying like heck not to have to rip out the wiring and upgrade to 12/2 so I can run a 20A breaker. Any thoughts?