I am currently using two battery banks for a 48V system. I have the traditional "1, 2, both, off" selector switch.
It's a tempting thought to install contactors (relays) so that I can have a small, low voltage 'control' panel where the switches are located. Part of me is trying to resist the urge. It adds more complexity, more opportunities for things to break or "go wrong".
If I install contactors to switch the battery banks on and off, what is a good source? If my typical load is expected to be 25-40A, do I need to get at least a 80-100A contactor / relay, or is it safe to use a relay at close to full rating?
John
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