First cut the outer sheath, the insulation is pulled out, and then cut a section of conductor observation cross section copper is uniform, if it is pure copper, gold would be a uniform color; but if the inside doped iron or aluminum alloy or other can see obvious white noise or black.
How to distinguish cable? The eight step, teach you to buy Cable
First cut the outer sheath, the insulation is pulled out, and then cut a section of conductor observation cross section copper is uniform, if it is pure copper, gold would be a uniform color; but if the inside doped iron or aluminum alloy or other can see obvious white noise or black.
