How to test whether the cable bought is all copper wire?
With the eyes can be directly observed, the metal wire cross-section of cable inside, pure copper wire cross-sectional area is yellow (now also participate in iron wire, the copper wire it feel stiff), if the wire cross-sectional area inside is white, that is copper clad aluminum cable.
A hand gloves, on the other hand pliers, cable will be truncated to 10 cm, and put them on the fire, stay cable insulation plastic melting, wire clamping of cable head, hand pinch wire, pull out, pure copper wire wire should be complete, if a section that is not complete, pieces of copper clad aluminum or by other means of producing cable production.
It's easy to be afraid of wire. Just try it with a magnet, but I've never met a wireSince the price of copper cable prices have risen very exaggerated, before a box of brand-name line as long as more than 200 Amp 450, will be able to buy, after copper prices amp to more than 700, to 350 ZapaiLook at the weight of cable quality is relatively simple, put up a Hodge box can be provided for a moment arm gently, AMP a box on the acid, but you only have to find a similar length to the contrast