Normally aluminum, zinc, copper, or an alloy that will provide predictable characteristics and blow under the conditions the fuse was designed for.
A fuse in its simplest form - is simply a short piece of wire that is weaker than the circuit it is protecting. When the current flowing through the circuit exceeds the fuse rating, the fuse wire melts - breaking the circuit.
copper and tin
There is an oversized or malfunctioning fuse in the fuse box. The fuse should blow before the wire is damaged.
By 'fuse', I assume that you are referring to the fuse element (fuse wire), rather than the complete fuse?A fuse element is an alloy, such as tin and lead. Alloys such as these exhibit what is called 'eutectic' action. This means that the alloy retains the good conductivity (e.g. of the tin), but has a lower melting point (e.g. thanks to the lead).
Fuse wire is usually made with metal that has a low melting point, e.g. tin, to lessen the risk of fire.
The fuse wire is thinner and it's designed to melt faster.
Because then it wouldn't 'blow' at the prescribed amperage. -A fuse is made with very fine tolerance wire to melt at an EXACT amperage.
It will produce a dead short and blow a fuse if the circuit is fuse protected, if not it will burn the wire up until the wire(s) burns in half.
yes very safe.add. Fuse wire is usually made of tin-plated copper. The fuse wire may well get warm in service, and a bare copper wire will gradually oxidize and will fail sooner as a consequence.
NO. Usually the positive wire will have the fuse.
The wire may not melt and break if an unsafe current is produced.
Fuse wire is designed to open under over current conditions. Just like a fuse.