I have all the major components (I think) and wanted to run this plan out for comment. This is 100% off grid, I will install it and this forum will get to inspect it.
Equipment will be in a 3X5 closet. The 3' side is the outside wall and what is represented in the picture. Imagine the cardboard on the floor is a vertical wall. Solar panels will be mounted just outside this wall on a pergola type structure. (eventually) The main AC panel will be on the 5' wall which would be to the left in the picture. The MPPT would be about 70" above the floor. In lieu of cardboard, it will get mounted on cement board in the final install.
Battery to the busbars which feeds the various components. 100 amp fuse to the inverter, 63 amp DC breaker to the MPPT, 30 amp DC breaker to the plug in battery charger (run off generator), single battery so the 100 amp CB on board for the battery. #2AWG for battery and inverter. #10 for the charger, #4 for the MPPT. PV is going to be JA solar 295W used panels, 39.6 VOC, 32 VMP, 9.2 amps. Not sure how many, but initially will try 5 in series. (Nicely stays under the 250V limit) Final configuration TBD based on usage and will add combiner box if needed. Initially the panels will be set out on the ground and wires enter through the wall just below the disconnect. Probably will be plastic conduit or liquid tite. (violation #1, bad idea?) All equipment chassis', PV frames, main AC panel will connect to a common ground bus (not pictured, think it will be between battery and charger) connected to a ground rod driven just outside.
AC will exit the top of the inverter and go to a small distribution panel. Back feed a 30 amp breaker and jumper both legs for 120v. The inverter is bonded, so will leave it that way and not bond the panel. I am not planning a transfer switch for generator.
Some questions. No doubt will have more.
1) Is the battery negative also supposed to be connected to the earth ground (ECG)? Small explanation anyone?
2) Should I exit the PV disconnect in conduit for a few inches up towards the MPPT? Of course at some point the wires do have to see the light of day. Better to just keep it short and skip conduit?
3) This one gets it's own picture. AC output. As pictured it's temporary cord connected to a handy box with a duplex outlet. For the final install, can I use #10 romex, exit into the wall directly (DOWN through cardboard in the picture) and come out around the corner into the main AC panel? Should I be using crimp ends or bare solid wire?
Thanks!!
Equipment will be in a 3X5 closet. The 3' side is the outside wall and what is represented in the picture. Imagine the cardboard on the floor is a vertical wall. Solar panels will be mounted just outside this wall on a pergola type structure. (eventually) The main AC panel will be on the 5' wall which would be to the left in the picture. The MPPT would be about 70" above the floor. In lieu of cardboard, it will get mounted on cement board in the final install.
Battery to the busbars which feeds the various components. 100 amp fuse to the inverter, 63 amp DC breaker to the MPPT, 30 amp DC breaker to the plug in battery charger (run off generator), single battery so the 100 amp CB on board for the battery. #2AWG for battery and inverter. #10 for the charger, #4 for the MPPT. PV is going to be JA solar 295W used panels, 39.6 VOC, 32 VMP, 9.2 amps. Not sure how many, but initially will try 5 in series. (Nicely stays under the 250V limit) Final configuration TBD based on usage and will add combiner box if needed. Initially the panels will be set out on the ground and wires enter through the wall just below the disconnect. Probably will be plastic conduit or liquid tite. (violation #1, bad idea?) All equipment chassis', PV frames, main AC panel will connect to a common ground bus (not pictured, think it will be between battery and charger) connected to a ground rod driven just outside.
AC will exit the top of the inverter and go to a small distribution panel. Back feed a 30 amp breaker and jumper both legs for 120v. The inverter is bonded, so will leave it that way and not bond the panel. I am not planning a transfer switch for generator.
Some questions. No doubt will have more.
1) Is the battery negative also supposed to be connected to the earth ground (ECG)? Small explanation anyone?
2) Should I exit the PV disconnect in conduit for a few inches up towards the MPPT? Of course at some point the wires do have to see the light of day. Better to just keep it short and skip conduit?
3) This one gets it's own picture. AC output. As pictured it's temporary cord connected to a handy box with a duplex outlet. For the final install, can I use #10 romex, exit into the wall directly (DOWN through cardboard in the picture) and come out around the corner into the main AC panel? Should I be using crimp ends or bare solid wire?
Thanks!!