no matter what size wire your running ALWAYS disconnect the battery
got in a hurry.. shorted out a smaller gauged hot wire and it welded itself to the metal.. had to pull it off in a hurry and well all i had was my hand..
I (had) a small solar setup which consisted of 6 12v batteries in a tight azz box for my battery bank. I recently needed the room for my new venture in knife selling so the setup needed to go among other things. Trying to dismantle this was nothing short of a game of operation! I remember vividly installing this and accidentally contacting two battery leads and WOW the sparks!! Melted one of my Craftsman wrenches also. I considered myself lucky. It's no picnic when you have your hand with wrench in there believe me I know. Look out!
wow, nice crisping on the edges. I bet that hurt. Yes, I too had done something like that, but not my hands, I was testing an amp to buy of CL in a parking lot, I wired it up quick to test it, I used 12awg as test wire, anyway as soon as i connected the pos/neg and turn around to see if it lit, the wire smokes and catches fire. I got a burn mark in my van carpet from where the wire layed. Needless to say i didnt buy the amp. But i was pissed that it ruined my carpet, glad it wasnt on my seat. btw, the guy still insisted that it was fine. it was a a little 2 channel extant..like 50x2. 12awg is fine for no load testing.
not much of a story.. was running the last wire for my methanol injection controller which happened to be a constant 12v.. i tapped into the wire needed and when i started to run that wire to the controller it hit a peice of metal somewhere under the dash and grounded out .. it welded itself to that metal and smoke was going everywhere since the coating was melting off
i had no other option but to hurry and pull the wire bare hands.. just seemed to melt into my finger lol
and no there was no fuse.. it would be a bad idea to fuse it.. if the controller is going to fail it has to just fail.. it has its own safety and the problem if i were to fuse it.. lets say for some odd reason the fuse blew while under boost.. the kit would loost power and lose failsafe.. and my motor would blow.