TE Connectivity / Raychem FLDWC0311-0.25-5

A conductor is a material which contains movable electric charges. In metallic conductors, such as copper or aluminum, the movable charged particles are electrons, though in other cases they can be ions or other positively charged species.

a measurement of?wire?diameter.?This determines the amount of electric current the wire can safely carry, as well as its electrical resistance and weight.