Quote:
Originally Posted by sjh
Ergo, the advice. Thirty (30) plus amps at 12 volts is 360+ watts. Take four (4) 100 watt light bulbs (about 10% light & 90% heat) and turn them on. Sense all the heat they put out. Concentrate all that heat in a wire, in a car, buried under a dash, etc.
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The heat is only generated in a light bulb due to the very thin wire and the resulting very high temperature due to the current in the wire.
A 60W bulb has only 1/2 amp, and yet it generates significant heat.
A fuse accepts 30A while remaining below the temperature threshold required to melt it.
Two completely different concepts.