The fuse on my cigar lighter extension lead blew and it's marked 250V 3 amp . My question is does any 3 amp fuse the right size do the job ?
I know excess current blows fuses but what puzzles me is that at 250 volts a 3 amp fuse will take 750 watts but at 12 volts only 36 watts .So is the voltage rating of the fuse irrelevant ?
I know excess current blows fuses but what puzzles me is that at 250 volts a 3 amp fuse will take 750 watts but at 12 volts only 36 watts .So is the voltage rating of the fuse irrelevant ?