Thanks for all the info and advice. The way the boat is now wired, I have two banks of house batteries, with a 1, 2, off and 1+2 switch between them and the house. Each bank is in an engine room with a small diesel
, on a catamaran
. The charger is a single
output that is wired to bank 2. There's no way to charge bank 1 without switching to "1+2" on the battery switch. All the output of the IOTA goes to bank 2.
Now, I am having issues and chasing down gremlins and shorts in this old boat. I like to charge and maintain the batteries, with the house disconnected. At the moment, I can't charge bank 1 without hooking both banks to the house, which has a short in it. I need to put a disconnect switch between the combining switch and the house, but I'd have to Mickey Mouse two lugs to do that. I don't have any way to make up short battery cables
with a good lug on each end.
I also just noticed today that the house banks are not fused between them and the house wiring
. I found a new Blue Sea 300 amp fuse in the spares locker, so I figure previous owner had planned to install it. Ain't it fun buying
As for the IOTA, we were hit by lightning
on the way down here last year. Fried just about everything on board that was hooked up to 12volts and turned on. Both fuses
blew on the IOTA. Since then, it's been suspect. It sometimes has no measurable output at all ( using a digital multimeter looking at volts ) . The label says the max is 13.6, but I don't see that. I see 12.6, or sometimes zero. Last time I checked the fuses
one of them was intact, but the plastic was melted. It's starting to show signs of corrosion
. I have been thinking that if I just replaced it with a two bank charger, I could run wires to each house bank independently.
The charger installation
location on this boat exposes it to rain and splash when the engine room door is open. The IOTA has a fan on the top of it and the chassis is steel
, with a lot of open ventilation holes. I think it would be great in an RV.
Or in a more protected location on a boat.