Thank you one and all. This is a new issue since moving into a new marina (very new and modern marina), so new slip to us. I have a 30 amp plug
and cord, breaker close to the boat end receptacle (which incidentally has both a green and red LED light, neither of which are lit...this is also new though I cannot say when they stopped working; just noticed this a few days ago), 10 gauge 3 wire to my source selector, then to my Blue Sea 5 breaker distribution panel. We often pull 20 amps while heating
the boat at the dock
(we live aboard), charging
the house bank, heating water
or using the microwave; then the hot water
heater kicks in, we bump up to a full 30 amps. No red LED at all without draw. If I remember correctly (and I can easily check, no time right now) I have 12 gauge 3 wire port and starboard lines on separate breakers, 12 gauge 3 wire to my built-in wall heater, and 12 gauge 3 wire to both the battery charger
and hot water heater (on separate breakers). I am certain that the problem is voltage differential as suggested, but I will be sure to confirm. There are no live aboards adjacent to us, but I will ask others further down the finger re: their experience. Thank you!
Any thoughts as to why my LED's on the very first Blue Sea breaker are not functioning? Also, there is one green LED on the distribution panel (the one indicating when the battery charger
breaker is on) that is not functioning; I have purchased a replacement from Blue Sea, but not replaced it yet. The panels
and breakers are all approx. 8 years old. Can I chalk this up to age? Voltage irregularities in the marina? Thanks.