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diy solar

40 amp mphpt fuse size

Rhodeisland

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Joined
Jun 10, 2021
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I have the 400 panel system that is in the book. I have a 40amp mppt going to a 200 amp hour lith. Battery bank. I have a 40amp braker that has been collecting dust. Can I use it between the mppt and batterys. Or dose it have to be a higher amperage?
 
It should be about 50A DC rated breaker, and it also mean that the wires has to be the correct gauge because the breaker is for preventing wire from catching on fire if you have shorted circuit.
What does the manual for the SCC say about the breakers and wires?
Make and model of the SCC?
 
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