Solution:
The accompanying diagram depicts the most typical fuse setup. The fuse wire is strung between the two metallic terminals T1 and T2 in a porcelain holder. In this fuse setup (since porcelain is an insulator of electricity). This holder is designed to fit into a porcelain socket with two metallic terminals to which the circuit’s live wire is connected.
Copper has a high melting point and a low resistivity. As a result, a copper wire cannot be used to replace the fuse.