K8MEJ
Owner, Off-Grid Power Systems
I currently have two DIY 280Ah battery packs connected in parallel to run my 3000VA MultiPlus and DC loads. I have two MPPT's for solar charging. The system is all installed under the bed in my travel trailer. I am using a Lynx Distributor with MEGA fuses for input from my batteries. Each battery pack is connected to the Lynx bus bars via 2/0 wires between about 24" in length. I have since learned that MEGA fuses aren't recommended for battery fusing due to their low interrupt capacity in short circuit situations.
I'm going to be adding two more 280Ah battery packs giving me four of these packs in parallel. I'm using 280Ah EVE cells from Amy Wan with M6 welded studs. I'm thinking instead of using the MEGA fuses in the Lynx Distributor, I should instead be using a Lynx Power In with MRBF fuses mounted directly on each of the four battery packs' positive terminal. While more expensive, I'd rather go the MRBF route than ANL fuses if I make the switch.
My questions for the group:
I'm going to be adding two more 280Ah battery packs giving me four of these packs in parallel. I'm using 280Ah EVE cells from Amy Wan with M6 welded studs. I'm thinking instead of using the MEGA fuses in the Lynx Distributor, I should instead be using a Lynx Power In with MRBF fuses mounted directly on each of the four battery packs' positive terminal. While more expensive, I'd rather go the MRBF route than ANL fuses if I make the switch.
My questions for the group:
- In my 12 volt system, are MEGA fuses acceptable or should I use MRBF terminal fuses at each battery pack?
- The highest load in my system is the Multi, which can pull up to 200A at 12 volts. If I plan for one or even two batteries to fail or need to be brought offline, what size fuse should I use on each battery pack? I'm thinking 100A.