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Well, having spent some time operating a 12VDC system last year when I moved into some shacks, I will say that I find it a lot more convenient to run 120VAC. I
by scarecrowbob 7mo ago
Well, having spent some time operating a 12VDC system last year when I moved into some shacks, I will say that I find it a lot more convenient to run 120VAC.
I end up converting stuff anyhow, because all my loads run at different voltages- even though I had my lights, vent fan, and heater fans running on 12V I still ended up having to change voltages for most of the loads I wanted to run, or generate a AC to to charge my computer and run a rice cooker.
Not to mention that running anything that draws any real power quickly needs a much thicker wire at 12V. So you're either needing to run higher voltage DC than all your loads for distribution and then lowering the voltage when it gets to the device, or you simply can't draw much power.
Not that you can't have higher voltage DC; with my newer system the line from my solar panels to my charger controller is around 350VDC and I can use 10awg for that... but none of the loads I own that draw much power (saws, instapot, rice cooker, hammond organ, tube guitar amp) take DC :D
- jazzyjackson 7mo agoCatch me wiring my house with 20V USBC ;)
- mauvehaus 7mo agoDo you have a website with your system on it? I have an off-grid building I need to add solar to in the next year or so. After I fix the foundation and roof, of course. Naturally I’m exploring options for item 387 on the todo list instead of think about how I’m going to jack the building up.
- scarecrowbob 7mo agoIt's a pretty simple system: 4KW of panels, 400W 48V EG4 6000XP charge controller/ inverter 3x EG4 LifePower4 48V batteries a raspberry pi running solar assistant I feels like a bit overkill, and there is still a whole mppt unused on the 6000xp so I could still double my panel input. Also solar assistant tells me that I rarly go below 75% battery storage. If I just wanted to run my fridge and assorted convenience loads (and ran things like table saws off a generator) then I could get away with a lot less of a system. But I'm operating a recording studio, and there were a couple days this winter where I had a full-band session and a couple days of storms and got down to below 50%.