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Hi, I'm interested in putting solar panels on my detached garage. The house and the garage are separated by a concrete slab. Currently on the house side I have a 200 amp main panel. There is a 1/2" conduit that goes underneth the concrete slab and feeds the garage with (2) 15 amp circuits. The solar system will be (16) 240 watt panels with (16) enphase micro inverters. Each inverter outputs a max of 215 watts or 3440 watts total for the whole system. It would all fit nicely on a 2 pole 20 amp breaker. My main concern is only having that existing 1/2" conduit between the house and the garage to work with. The house and the garage are separated by only 20'
So my question is would it be to Code if I Install a 50 amp sub panel in the garage, pull out the existing 2 circuits in the 1/2" conduit and land them in the new sub panel. Then run (3) #8 wire and (1) #10 wire for the equipment grounding conductor in the 1/2" conduit to feed the sub panel off the main panel with a 50 or maybe a 40 amp breaker. At the sub panel I would I will make sure my grounded conductor and my equipment grounding conductor are isolated from each other with seperate bus bars. I would also Install a new ground rod at the garage location and connect it to my equipment grounding bus bar. That should get me to the next step which is the solar system. I could then install a 2 pole 20 amp breaker in the new sub panel and connect it to my solar system. Also I would land the solar systems #6 ground/lightning wire to the sub panels equipment grounding bus bar. Would this be legal? or do I need to bust out the sledge hammer and break up the concrete to install a dedicated conduit from the solar system straight to the main panel located at the house?
So my question is would it be to Code if I Install a 50 amp sub panel in the garage, pull out the existing 2 circuits in the 1/2" conduit and land them in the new sub panel. Then run (3) #8 wire and (1) #10 wire for the equipment grounding conductor in the 1/2" conduit to feed the sub panel off the main panel with a 50 or maybe a 40 amp breaker. At the sub panel I would I will make sure my grounded conductor and my equipment grounding conductor are isolated from each other with seperate bus bars. I would also Install a new ground rod at the garage location and connect it to my equipment grounding bus bar. That should get me to the next step which is the solar system. I could then install a 2 pole 20 amp breaker in the new sub panel and connect it to my solar system. Also I would land the solar systems #6 ground/lightning wire to the sub panels equipment grounding bus bar. Would this be legal? or do I need to bust out the sledge hammer and break up the concrete to install a dedicated conduit from the solar system straight to the main panel located at the house?
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