What's That Burning Smell?(inthewilderness.net) |
What's That Burning Smell?(inthewilderness.net) |
Their problem was that one of the screws got loose, and their suggested fix was to re-tighten them 6 month after installation. This is a good idea. I'd also suggest using wire ferrules and not ignoring blackened wires and smells from high-current electronics.
Also, and particularly in high current circuits like these, fuses generate significant heat on their own, at the connection points.
The better bet is to look to conservative standards (like ABYC for the marine industry) and follow their rules for wire termination. In this case that would be properly crimped ring terminals over simply wrapping stranded cable around a screw. That said I am sure the NEC has something to say about domestic solar installations.
Mag breakers and fuses won't help. A thermal fuse could work,provided it was thermally bonded to the bad connection. So you'll need a lot of thermal fuses - one at every potential bad connection.