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Re: Max battery bank
I assume the existing batteries are 12v, 4 in series for 48v string, and 4 strings for ~1100ah? Ideally, this bank would be 24x 1100ah/2v batteries in a single string, or maybe 24x 550ah/4v in two st…1 · -
Re: Oversized wire and breaker?
You should generally install the size of breaker or fuse recommended by the inverter manufacturer. Too small may not handle non-fault current safely, and too large turns the inverter and/or wiring in…1 · -
Re: Timer for battery bank vent fan?
I'm not familiar enough with the SMA aux port operations to say for sure. One mode of operation is for an aux port to simply close the circuit, which sounds like what you're describing. The circuit i…1 · -
Re: Timer for battery bank vent fan?
How about using the aux to just signal (not power) a relay, and have the relay control fan power?1 · -
Re: Cost of off grid systems
IMHO, propane fridges are a good option for an application like an RV or cabin not used all that often. Used weekends over the summer, for example, the cost of propane is minimal compared to a solar …1 ·
