TJ Sprocket
Veteran Member
- Joined
- Jul 21, 2016
- Messages
- 33
- Location
- United States
- Vessel Name
- Blue Heaven
- Vessel Make
- Mainship 430 Aft Cabin
We have a situation where one of the house batteries on our Mainship 430 Aft Cabin would run down when on the hard, even with all breakers turned off. It was discovered that 4 little relays were wired directly to the battery and there was sufficient current draw to drain the battery over a couple of days. Upon investigation, it appears that when any circuit in the bank of relays feeding the bilge pumps is broken, the relay powers up a main wire that sends current to a second bank of relays that fires up ALL of the bilge pumps and alarms. My yard says they've never seen a setup like this. Is anyone familiar with this type of redundant circuitry? Is this standard Mainship? Does anyone else have problems with drained batteries like this?