I'm looking to build a small solar generator and battery bank specifically for backup during hurricane season. I want to use it to run a mini split AC unit that operates on 115v with a 15a draw, estimated surge of about 1200 watts. I haven't purchased any components yet, so I want to get some advice from the community on my planned build list to ensure I've covered everything and to explore any ideas I might have missed.
Here's what I'm considering so far:
- 4x 325w solar panels connected in parallel and series
- 30a charge controller for 12/24v
- 2x 24v 100ah LiFePO4 batteries
- 4000w surge, 2000w continuous pure sine wave inverter
- 10ga copper stranded wire for connections between the controller and batteries, as well as the batteries to the inverter (I might increase to 8ga for the continuous draw).
I've read about using in-line fuses for the DC connections but I'm unsure if they're necessary since the generator will be used as needed. Am I missing anything? How can I optimize this setup? I plan on storing everything in a plastic bin and setting the panels up when required.
3 Answers
One thing to keep in mind is that if it stays cloudy for several days after a storm, your solar setup might run out of juice in just a few hours. Having a backup plan is essential.
Make sure to use a larger gauge wire for your inverter setup. And don’t skip out on adding fuses; they’re essential for safety! You might want to check out some of Will Prowse’s YouTube tutorials for deeper insights.
What’s your budget for this project? It really helps to figure out what components to look for.
I’m looking at around $1k. I can stretch it a bit more for quality parts or to increase capacity if needed. Ideally, I want something modular to expand later.
Yeah, I also have a 3000w dual-fuel generator for continuous power just in case. I’m looking for ways to extend fuel reserves or backup options in case anything fails.