Just in case anyone takes this the wrong way, part of the purpose of over current protection is to keep wires from melting, so if your protection and the thing you’re trying to protect both melt at the same time, your protection isn’t really working.
Isn’t that rating when the wire insulation catches fire and not when it melts? Copper can stand a much higher temperature that anything surrounding it, so the wire might survive long enough to cause the thicker wires to catch fire.
I don’t think that wire can handle 80A. So it is still kind of a fuse.
Just in case anyone takes this the wrong way, part of the purpose of over current protection is to keep wires from melting, so if your protection and the thing you’re trying to protect both melt at the same time, your protection isn’t really working.
But if this wire melts before the other wires melt, then it kinda works to some extent
The wire fuse
Isn’t that rating when the wire insulation catches fire and not when it melts? Copper can stand a much higher temperature that anything surrounding it, so the wire might survive long enough to cause the thicker wires to catch fire.