Good answer, makes sense. I know you have repowered quite a few boats, James. Have you tried doing any with grounded banks, and actually seen electrolysis become a problem?
---In electricboats@yahoogroups.com, <james@...> wrote :
At 48 volts, The reason why we float the ground is to prevent possible corrosion of the through hulls and propeller. At higher voltages, the ground is floating for safety and reliability purposes.
Floated ground systems can be monitored for ground faults, whereas grounded systems cannot.
Floated Ground Systems require double pole breakers throughout. The negative is treated as a live wire requiring circuit protection.
I like isolating the 48 volt battery (floated ground) because it makes it easier to troubleshoot and to monitor. When you add a Resistance Monitor, you end up having an on board megger for every circuit.
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