Harbor Freight Fuses

I've mentioned this before. My brothers job is field failure analysis on anti lock brake processors and more for Bosch. Those components are powered by 30 amp fuses in any application. Through testing they have found little or no consistency fuses.
30 amp fuses will conduct 50+ amps for X milliseconds before opening.
Nature of the beast no matter who made it.

I agree, every fuse has a blow time, or time of overload prior to failure. Hence: Slow-blow fuses.

This isn't X milliseconds. This is months (well, the total elapsed time of circuit overload was technically infinity since the plastic had melted/burned away and the "fuse" was still going strong) of wire-harness melting and wires arcing.

"No matter who made it"...I disagree.