Hey folks,
Im about two weeks into this solar system stuff when I had a few local companys come out and draft a plan. Im located in southeaster Massachusetts - (Hyannis). In Massachusetts, were capped at 10kw a/c systems for residential. With that being said, im looking to use my roof space to meet the cap. One system that was drawn up is an LG 425 x 33 with Enphase IQ7+ inverters. Thats a 1.45 AC/DC ratio. Their rational was that while undersizing will cause clipping a few hours a day for a few months, the excess sideloading generated will be worth while throughout the year. Another company came out with LG425 x 27 with IQ7A and wouldn't recommend using the IQ7+ because the panel is rated too high for it, he says that it will cause clipping quite often, and it will prematurely cause failure to the inverter. Now im at the point that I dont know who to believe.
I know that MA is not the best locale for year round sun; but the roof is facing 248 degrees west, 8/12 pitch with lots of sun aimed at it. Those panels just seem excessive for the inverter. If I step up to a IQ7A then that puts me at a max of 27 inverters utilizing something like an LG440 x27. I cant go to a IQ7 and use more lower wattage panels because im out of roof space. My max panel fitment is roughly 34 panels.
Any help is appreciated.
Thanks.
Im about two weeks into this solar system stuff when I had a few local companys come out and draft a plan. Im located in southeaster Massachusetts - (Hyannis). In Massachusetts, were capped at 10kw a/c systems for residential. With that being said, im looking to use my roof space to meet the cap. One system that was drawn up is an LG 425 x 33 with Enphase IQ7+ inverters. Thats a 1.45 AC/DC ratio. Their rational was that while undersizing will cause clipping a few hours a day for a few months, the excess sideloading generated will be worth while throughout the year. Another company came out with LG425 x 27 with IQ7A and wouldn't recommend using the IQ7+ because the panel is rated too high for it, he says that it will cause clipping quite often, and it will prematurely cause failure to the inverter. Now im at the point that I dont know who to believe.
I know that MA is not the best locale for year round sun; but the roof is facing 248 degrees west, 8/12 pitch with lots of sun aimed at it. Those panels just seem excessive for the inverter. If I step up to a IQ7A then that puts me at a max of 27 inverters utilizing something like an LG440 x27. I cant go to a IQ7 and use more lower wattage panels because im out of roof space. My max panel fitment is roughly 34 panels.
Any help is appreciated.
Thanks.