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Charge controller/ inverter recs for small off grid system

Gaspasser

New Member
Joined
Sep 30, 2023
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Location
New Hampshire
Have a current grid tie system and some electrical technical knowledge but need advice please. We have a new property off grid with plans to build a retirement home. Currently just have a small barn that I wish to put some lights in (12V LED's?). It would also be nice to run a table saw in short bursts if possible (mabye not practical). I have a propane portable generator but it is a pain in the a$$ to drag out and setup. I have 12 300 watt used panels and 2 6 volt Trojan Motive T-105 (in series for 12v) deep cycle lead acid batteries available. Spec on batteries: Capacity (min) 447 @ 25 amp, 115 @ 115 amps; bulk charge 14.82 v (in series for 12 v), float charge 13.5 V, equalize charge 16.2 V. I realize lead acid is "old-fashioned" but since I have them, why not use them as a temporary set-up? The system would only be used sporadically in short intervals so I'm thinking 1-2 panels would be sufficient. Eventually I'd upgrade to the latest and greatest (currently Fe Li Ph is the rage I'm hearing).

Can any give me a specific brand/specs for a charge controller that would work for me?
Series or parallel on panels?
12 V LED light recs.
Inverter for table saw (thinking this is overly ambitious for this system).

Appreciate all comments/critiques. Many thanks.
 
short intervals so I'm thinking 1-2 panels would be sufficient.
Then install six.
Can any give me a specific brand/specs for a charge controller that would work for me?
Series or parallel on panels?
12 V LED light recs.
Inverter for table saw (thinking this is overly ambitious for this system).
I have an affordable QZRELB 2000W PSW inverter that will run my smaller (portable) craftsman tablesaw and makita compound miter saw. And shopvac, coffeemaker. No problem.
I’d recommend the 3000W model.

For SCC even if using the QZRELB I run a setup like this: MPPSolar 1012LV AIO because it has a 1000W inverter, takes a reasonable amount of solar, is inexpensive yet reliable, has a built in charger… I leave it off and just use it for the SCC alongside (this month LOL) a couple powrMR 60A SCC’s. The QZRELB provides the 120VAC power.
That will give you a very robust system with very little upfront cost. And it will work, plus offers redundancy with several backup possibilities.
 
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