Hi,
I just set up a solar system for my cabin. I'm relying on the advice of a friend who has done his own small solar and an electrician to help keep me out of some trouble. I would appreciate comment and critique for people on this forum, you all have lots more knowledge and experience than the three of us combined.
I have 6x150W 12V Coleman panels, 3 strings of 2, feeding 24 volts over 10 gauge wires through a combiner box.
From there 6 gauge wire feeds a 24V 40Amp EPEVER MPPT. And from there 6 gauge wire feeds 2 strings of 4 golf cart batteries (215 amp-hours each) each connected with 6 gauge wire. I have a 50amp breaker on the positive wire between the batteries and everything else, and a on/off switch on the negative line between the inverter and the batteries/MPPT.
Connected to that is a 3000W continuous/6000W peak pure sine wave inverter. The inverter A/C goes through an on-off switch befor running underground to my cabin where it connects to a 200AMP panel with standard house wiring after that.
In the cabin I have minimized electrical loads. It has a propane forced air furnace, a 10 cubic foot electric fridge, an RV 100V water pump, a septic pump, a propane range, and LED lighting. There are circuits for a dryer and an electric range, but not in place today.
Some issues I think I have are
- the 6 gauge wire from the black bus bar to the on-off switch. That should be doubled or bigger I think.
- the 50amp breaker is probably too small for the total capacity of the battery bank and the draw of the inverter. That size was taken from someone else's system design with a 2000W inverter.
- I'm missing a ground wire from the combiner box. I don't know the right size for that or where to connect that. Does it run on the ground to the cabin?
As I said, I appreciate any input people have on this setup.
Thanks!
I just set up a solar system for my cabin. I'm relying on the advice of a friend who has done his own small solar and an electrician to help keep me out of some trouble. I would appreciate comment and critique for people on this forum, you all have lots more knowledge and experience than the three of us combined.
I have 6x150W 12V Coleman panels, 3 strings of 2, feeding 24 volts over 10 gauge wires through a combiner box.
From there 6 gauge wire feeds a 24V 40Amp EPEVER MPPT. And from there 6 gauge wire feeds 2 strings of 4 golf cart batteries (215 amp-hours each) each connected with 6 gauge wire. I have a 50amp breaker on the positive wire between the batteries and everything else, and a on/off switch on the negative line between the inverter and the batteries/MPPT.
Connected to that is a 3000W continuous/6000W peak pure sine wave inverter. The inverter A/C goes through an on-off switch befor running underground to my cabin where it connects to a 200AMP panel with standard house wiring after that.
In the cabin I have minimized electrical loads. It has a propane forced air furnace, a 10 cubic foot electric fridge, an RV 100V water pump, a septic pump, a propane range, and LED lighting. There are circuits for a dryer and an electric range, but not in place today.
Some issues I think I have are
- the 6 gauge wire from the black bus bar to the on-off switch. That should be doubled or bigger I think.
- the 50amp breaker is probably too small for the total capacity of the battery bank and the draw of the inverter. That size was taken from someone else's system design with a 2000W inverter.
- I'm missing a ground wire from the combiner box. I don't know the right size for that or where to connect that. Does it run on the ground to the cabin?
As I said, I appreciate any input people have on this setup.
Thanks!
