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Why should a burnt out fuse never be replaced by one with a higher rating or with a piece of aluminum foil?
Wiki User
∙ 15y ago
The purpose of a fuse is to melt and open the circuit when an unsafe current is applied across the fuse, thus preventing the flow of further harmful current. If one replaces the fuse with an higher rating, the fuse may not properly burnout when an unsafe current is flowing, thus the current will continue to flow, possibly causing fire, electrocution, damage to the appliance or all three. Aluminum foil should not be used since there is no way to accurately calculate the rating of the selected strip, and coupled with the fact that it is an exposed bridge, combines to increase the risk of electrically related human injury or damage.
Wiki User
∙ 15y ago
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