rvlifer
Senior Member
I hope this isnt me being dumb or getting senile but you will have to explain that one to me
I hope this isnt me being dumb or getting senile but you will have to explain that one to me
I am curious how you fuse that 2,400 AHs worth of batteries in parallel.The electric bay has eight 300 AH LiFePO4 batteries in parallel for a total of 2,400 AH
The key is utilizing the correct size fuses, breakers and cables. Also, since I have two inverters, all cables must be the same length to each, to keep everything balanced. Whoever installed system the you linked to didn't know what they were doing.I am curious how you fuse that 2,400 AHs worth of batteries in parallel.
Here is the reason I am so curious about that.
-Don- Auburn, CA
IYO, is there any problem with using separate lower current fuses on each battery before it is paralleled with the other batteries?The key is utilizing the correct size fuses, breakers and cables.
IYO, is there any problem with using separate lower current fuses on each battery before it is paralleled with the other batteries?
IOW, instead of a single 400-amp fuse for a four-battery output, all in parallel, use, a 100-amp fuse on each battery before it is paralleled with the other batteries. Still a total of 400 amps.
While will be more expensive and a dead short will blow all four fuses, I somehow have a hangup WRT using extremely high current fuses if not absolutely necessary unless where such cannot be avoided. I would feel safer with the 100-amp fuses. But is there an issue there that I am not considering?
IYO, would that do anything useful, or would it just be a FWOTAM?
-Don- Auburn, CA
Most lithium batteries have internal current limiting (overcurrent shutdown) in their internal BMS so adding a dedicated external fuse on each battery is largely irrelevant. Overcurrent shutdown is one of the things Will Prowse tests when he does his battery teardown and evaluations.IYO, is there any problem with using separate lower current fuses on each battery before it is paralleled with the other batteries?
IOW, instead of a single 400-amp fuse for a four-battery output, all in parallel, use, a 100-amp fuse on each battery before it is paralleled with the other batteries. Still a total of 400 amps.
-Don- Auburn, CA
Less heat on the fuse sockets I thought could be helpful. But perhaps not a realistic issue. Just would make me feel a bit better to not have the large numbers for a current draw all at one place.Having fuses between batteries is fairly useless.