Transfer switch question???
I finally got around to installing an inverter and have question concerning transfer switch. A little information on what I have. I bought a 50A progressive dynamics xfer switch that I wired with prio...
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mbrower wrote:
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That is correct, I have shore power running through the "designated generator " side of the relay (NO) and generator running through the "shore power" side of the relay (NC). I keep power on my camper 24/7 and was nervous about the relay coil staying energized.
Although I don't have a PD transfer switch, mine is wired this way as well. When on shore power the coil is activated closing the shore power contacts. When not on shore power, a spring keeps the other contacts closed.
I've been told that the electromagnetic coil will keep the contacts closed tighter than the spring allowing greater current. This is appropriate for me as shore power should handle the full 30 A (50A in your case), but my inverter can only generate a very max of 15A.
Also when using the inverter, I don't want to waste energy for the coil.
But when on shore power the coil is always energized, and it does generate heat, and I noticed a faint hum recently. Otherwise it's worked well over the last year or two.
