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Re: Can i start an off-grid solar project without batteries and add them later?
The short answer is no--You cannot run a off grid AC inverter without a battery bank. What is normally done, if you have AC mains, is a Grid Tied Inverter to reduce the cost of electricity from the u…2 · -
Re: Misleading information from a supposed reputable? company
Yea... It is a good example of what an MPPT and PWM charge controller can do... But there is a whole bunch of stuff behind the scenes that go into designing and operating an off grid (or even grid ti…1 · -
Re: DC circuit breaker
Yes. That is correct. However, as long as the wire size is at least 12 AWG from array to charge controller, you do not need any breaker at all (only need breaker(s) with 3 or more parallel strings, o…2 · -
Re: DC circuit breaker
Isc~11 amps for your panels... 2x 11a=22a (two strings feeding into shorted string #3) would exceed the 20 amp maximum breaker/fusing for current through a single panel It is a close call for 3 paral…1 · -
Re: Van RV Proposed Solar System Check
What size controller for 175 Watt panels with Imp~9.8 amps... For a PWM controller charging a 12 volt battery bank, 40 Amp minimum. If you "believe" the NEC, they want to derate by 1/0.85 *…1 ·
