Any reason I shouldn't mount a Fronius Primo (or other brand string inverter) at the panels location and then just run 240VAC over to the house (100' away) as opposed to running DC through the conduit. I save on wiring and don't have higher voltage DC running underground.
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What is your DC voltage? The higher the volts the lower your amps, and the thinner wire that is required. Because of the distance, you have to add that into the equation. -
Under 600V, there is no real difference if you run 450VDC vs 240VAC except the 450V can use smaller ( cheaper) wirePowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
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Originally posted by littleboss View PostAny reason I shouldn't mount a Fronius Primo (or other brand string inverter) at the panels location and then just run 240VAC over to the house (100' away) as opposed to running DC through the conduit. I save on wiring and don't have higher voltage DC running underground.
Good exercise but it can be annoying after awhile.Comment
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Originally posted by heimdm View PostWhat is your DC voltage? The higher the volts the lower your amps, and the thinner wire that is required. Because of the distance, you have to add that into the equation.Comment
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Originally posted by robbyg View Post
All the reasons above plus the 100 foot walk back and forth every time you need to change something in the settings or the inverter trips.
Good exercise but it can be annoying after awhile.
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Originally posted by littleboss View PostAny reason I shouldn't mount a Fronius Primo (or other brand string inverter) at the panels location and then just run 240VAC over to the house (100' away) as opposed to running DC through the conduit. I save on wiring and don't have higher voltage DC running underground.Comment
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Originally posted by littleboss View PostYou can't manage these fancy inverters with your computer or a phone app?Comment
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I mounted my Solaredge inverters at my ground mount array. I was told that DC is more sensitive to voltage drop than AC. My run is something like 175 feet. I upsized my wire one size more than necessary for the amperage to combat voltage drop.
I don't know why the concern about having inverters far away. It isn't like you are visiting them every day, or even every week. My Solaredge inverters just work and have never needed a reset.Comment
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