I am about to install a forward battery bank to run a windlass (120 Amp max) and eventually a bow-thruster (300 Amp max). The forward bank will be 160 AH.

I will have the forward bank connected to the house bank (800 AH). The cable run is 15ft (30ft round trip). The house bank is charged directly from the engine alternator (120 Amps). The engine will be running when I am using the bow-thruster.

Logically I should expect 300 amps to run between the house bank and forward bank when the bow-thruster is running. Is this correct, or have I missed something?

Thanks

Gerry

ps. Already posted on Sailnet but it stunned them into silence.