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Solar Power System Circuit Breaker

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Thread Starter

Alcap

In the solar power system, how do you determine the size of the DC circuit breaker between the charge controller and the batteries?
 
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Allan Capadosa

The charge controller rating is 60Amp charging a 48VDC system batteries. What will be the rating of my DC circuit breaker? Thanks.
 
C

curt wuollet

Without any regulations or other requirements. I'd probably wire for 75 Amps and use a 75 Amp breaker. That's 125%. That should hold even if the controller puts out a little extra for dead flat batteries until they acquire a surface charge. Hard to know better on limited information.

Regards,
cww
 
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