I am new to this chatroom. I have a Phoenix Multi 12/2500/120 in my narrowboat. two questions:-
How is the multi different to the multiplus?
I want to add a separate cable for charging the engine starter battery. What cable should I use? The manual suggests 70mm for the main bank but does not say for this smaller circuit.
The MultiPlus variant has the capability to do Power Assist.
The starter battery charge current is up to 4A. If your cable run to the start battery is less than 5 meters than a 1.5mm² cable should be fine. Fit a 5A fuse in line with this run.
A longer cable run would need thicker cable to mitigate Voltage drop.
