I've been using my 15 kilowatt system for about half a year now and I was getting sick of it not being balanced because I'm off grid and I didn't really have a means to balance it. So I just spent 3 days balancing my batteries with a generator and when I put them back together I messed up bad..... I prematurely put the main positive wire on while I was still tightening all of the nuts to the batteries. My ratchet has electrical tape up to the top but it's bare at the top and also at the socket. Well I went to Tighten one of the nuts near the main positive and I accidentally touched it while I was tightening and it blew up (in a sense). There was a bright red glow and about 20 huge sparks burst out of where I was working. Thankfully no fire started.
I thought I just screwed up my entire system. There was a large gash on the steel socket and the BMS lead had melted completely off the wire. Luckily when I took a closer inspection, I realized that I was screwing down a positive terminal at the time of explosion and so it shouldn't have destroyed everything, but it did cause damage to the wires and socket. So I'm really confused why that happened because the voltages shouldn't have been much different at all. Can Someone please explain to me what happened here? Could I have possibly caused damage that I'm not able to see?
Thankfully I learned a lot from this experience and I think it might be important to include that the breaker attached from the main positive to the rest of the system was switched off. After putting everything back together it works fine.
I thought I just screwed up my entire system. There was a large gash on the steel socket and the BMS lead had melted completely off the wire. Luckily when I took a closer inspection, I realized that I was screwing down a positive terminal at the time of explosion and so it shouldn't have destroyed everything, but it did cause damage to the wires and socket. So I'm really confused why that happened because the voltages shouldn't have been much different at all. Can Someone please explain to me what happened here? Could I have possibly caused damage that I'm not able to see?
Thankfully I learned a lot from this experience and I think it might be important to include that the breaker attached from the main positive to the rest of the system was switched off. After putting everything back together it works fine.
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