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Old 03-02-2016, 12:49 AM   #1
mjammersc
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AC Power to Inverter and then Subpanel

I am wrapping up a couple last minute details before I start my solar install. I am using a Magnum MS2812 inverter and was wanting to feed it in their "dual in-dual out" config where you route 2x30A breaker/feed into the inverters transfer switch circuit and then it routes the 3x30A to the sub-panel. My power center can't handle more than a 20A per spec so I am looking at options. One is setting up a new main panel sim-to BigBoomers setup that can handle the 2x30A breaker and moving my AC breakers to this panel. I was wondering if there was any other options/suggestions to reduce the amount of rewiring and space taken up by putting in 2 AC panels (new main and a sub). Is tying into the main 50A incoming and running into something like a MidNite BabyBox with a 2x50 or 2x30A input and then a 2x30A out doable? Other ideas?

Thanks for any suggestions
 
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Old 03-02-2016, 07:23 AM   #2
WaltBennett
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You've got a different sub-panel than ours so I don't know if you could do what I did. I wanted to have the inverter power only the lower wattage things (relatively speaking), and not the air conditioner, fireplace, AC part of the refer, and washer/dryer (which we don't have yet). Our panel has all odd numbered breakers on one 30 amp leg of the 50 amp service, and all the even breakers on the other. I left the leg that had the majority of those high wattage things on it and cut the leg to the other one, running it to and from our 4kw inverter. By doing this, I can only run the air conditioner when I've shore power (and all those other things as well) since our battery bank isn't big enough to run it for more than a half hour or so. When we're dry camping, the inverter will power the large TV & sound system, the microwave and all the outlets & the few AC lights that are left. It's up to us to manage the amount of power we use in this situation. When we've shore power, everything works off it (the inverter is in bypass mode).
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Old 03-02-2016, 09:09 AM   #3
mjammersc
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I'd have to look at the power center to see how it routes power, eg alternating legs to circuits or left half on one leg and right half on the other as the main is in the center so not sure. I'll be keeping the normal stuff (ACs, Water Heater, W/D though not installed, ...) on the main panel circuits and the rest on the inverter.
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2016 Montana 3160RL w/MOR/Ryde IS and Disc Brakes
855W Solar System, TriStar MPPT-60 Controller, Magnum 2800W Inverter, 6 Trojan T-105REs
2015 Chevy Duramax SRW SB Crew Cab

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Old 03-02-2016, 09:24 AM   #4
mjammersc
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In case it helps/matters, the Power Center is a Progressive Dynamics PD4575
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2016 Montana 3160RL w/MOR/Ryde IS and Disc Brakes
855W Solar System, TriStar MPPT-60 Controller, Magnum 2800W Inverter, 6 Trojan T-105REs
2015 Chevy Duramax SRW SB Crew Cab

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Old 03-03-2016, 08:07 AM   #5
Ozz
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I just wired into my panel, don't turn on the load if it is a high amp draw, or leave the breaker off. That way, any 120 outlet you plug into works, no resistance heat, no A/C use when Inverting and I really don't see a problem. I went through a transfer switch.
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