Lowcountry
New Member
- Joined
- Jul 12, 2020
- Messages
- 22
MPPT 100/50. Rough calculation for 4 panels @ 280W: 4*280/12.5= 89.6A. Your MPPT 100/50 limit is 50A; it's over 39.6A. Not good.12 volt 560AH lifep04.
I currently have 2 315 watt panels in series using that controller but got the 280 watt panels at a great deal including the racking.
So I'll remove the other panels all together and use then elsewhere.
The risk is you will burn your mppt 100/30 in the long run. If this setup is for temp, then the risk is lower. My recommendation is to buy another mppt 100/50. And keep your mppt 100/30 for back-up (in case one of your 100/50 fails, you can use it for temp. till you get your replacement).I was just thinking adding another 100/50. I have a Victron 100/30 controller also. 280x2=560÷12.5=44.8.
Do you think that too much over paneled?
You may want to ask the forum having 2 mppt 100/50 charging same battery will cause any mppt logic confusion. I have not tried it yet. It should work. But just to be sure before buying another mppt 100/50.Ok, thanks for the help, much appreciated!
Two Victron SCCs can be setup to communicate with each other and coordinate their charging efforts. The biggest potential issue is can the batteries handle up to 100A of total charge current?You may want to ask the forum having 2 mppt 100/50 charging same battery will cause any mppt logic confusion. I have not tried it yet. It should work. But just to be sure before buying another mppt 100/50.
30A x 14.4V = 432W out of 630W of panels. That's 68%. High heat and poor angle will do that.withe the 315x2 panels and victron 100/50 controller I usually see around 30 amps going in the battery during charging
Once you have 3 or more strings of panels in parallel you need to fuse each string. If you only have 2 strings in parallel then you do not need to fuse them.Now the question is what do I need to do to fuse it? The panels in series don't need fuses correct? But what about when I put them in parallel?