I have this one:
And you're right, there is no main breaker. I was confusing it with the AC panel I bought, which is this:
So I guess I should just add up all the devices, maybe throw in a few extra amps for future expansion, and just size and fuse the feed to the panel accordingly.
My boat uses so little power and has so few devices that the 13 position panel was overkill, but the next one down, with I think 5 or 6 circuits, was pretty much the same price, so I figured what the heck.
When I am sailing along at night, the instruments, VHF, GPS and LED running lights all add up to about 3 amps, and thats a conservative number by far. If I key the VHF rig then that adds 5 amps. The big numbes come from the cabin lights, which I'll size as if they were halogen bulbs, just in case someone changes one out.
My guess is that 30A is plenty.
Thanks, sorry for the confusion about the breaker.
Scampi 30 MK-IV
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