...The fuse is rated at "7.5" (amps?)... an issue.
"Amps" <--I think it should have a capital "A" (I may be wrong about that) ...even though it is a slang.
an Ampere is a measure of the amount of electric charge passing a point per unit time.
6241000000000000000 electrons, or one coulomb, passing a given point each second constitutes one ampere.
...so just multiply by 7.5 to solve how many electrons are whizzing around you in those wires in your jacket.
No wonder you feel warm!