frthompson
New Member
- Joined
- May 29, 2021
- Messages
- 62
I am building 2 12v 280ah 4s batteries each with a jbd 150a bms that will be connected in parallel. Each bms has two screw terminals for the B- and two for the C- connections. I am not counting on using the full capacity of the bms but seems reasonable to design the wire for 150a since that's the advertised capacity of the bms. From pictures of other installs I've seen it seems its considered best to use both B- and C- terminals with the two wires then going to a single terminal ring connector for each. So my question is what gauge wire to use if there are two wires for the B- and two for the C- connections with given the the rated capacity of the bms is 150a? The maximum draw I expect from the two batteries in parallel would be 100-200 amps if I run the microwave or air conditioner in my rv (but not at the same time!).