Hey everyone! I'm diving into my first solar project and I've put together a plan for a 1000 watt, 12-volt solar system. I've done tons of research, but I could really use some advice from those more experienced. Here's what I'm planning to use:
- 10 x 100 watt panels (5.13 amps at 23.4v each)
- 10 x 20 amp mc4 fuses
- 2 x 5 to 1 Y branch connectors
- 2 x 2 to 1 T branch connectors
- 60a/400v solar disconnect
- 60 amp MPPT charger (30a input max, 150v input max)
- 80 amp fuses between the solar charge controller and batteries
- 2 x 300ah 12 volt batteries in parallel
- 125a fuse going to a 100a fuse block
- 30a fuse to a 1000w inverter (the inverter is internally fused at 30a)
My idea is to connect the panels in two series of five panels each, in parallel, to get about 26a at 23.4v per string. This should give me around 26a and roughly 48v going into the solar charge controller. I haven't picked wire sizes yet, since I need to install the system first to see what's needed. My solar and power runs will be short, so I don't anticipate too many complications.
If you spot any safety concerns or anything I might have overlooked, I'd love to hear your thoughts! Thanks a lot for the help!
1 Answer
Hey! For your battery, I'd definitely recommend using ANL fuses—they're reliable and easy to find. As for the fuses on your panels, a 10A fuse should be sufficient. If you stick with the 20A ones, it could be a little too high. But if they’re cheap and you’ve already bought them, they should be fine. Just be cautious of any surges, since those higher amps might not pop as quickly if something goes wrong.
I appreciate the tip! I’ll go with ANL for the battery fuses. As for the mc4 fuses, I guess you’re right about the safety aspect. I’ll keep an eye on it during installation!