Distinguish Between Good And Bad Normal Bare Copper Wire

The bare copper wire has good electrical conductivity, low resistivity, good thermal conductivity, high strength, and tensile strength is better than aluminum wire. Bare copper wire has good thermal conductivity, so it is used to make anti-magnetic and geomagnetic instruments, meters, etc. At the same time, the plasticity of bare copper wire is also very good, and it is easy to hot press and process. Cold pressed. Buried walls and buried ground generally use hard bare copper wire as the main line; Soft bare copper wire is generally used for the power connection cable of the device. There is no difference between the two, just which position is more suitable.
The bare copper wire of ordinary wire is bright and reddish in color, and the bare copper wire is pulled into a small circle. If there are too many impurities in the bare copper wire, such as copper-clad steel wire, it will rebound. The copper is a little better and will not bounce back and form a circle. Then slowly straighten and reduce the bare copper wire. When fully restored, it proves that the material of the bare copper wire is indeed good.
The bare copper wire is softer, more suitable for turning and threading the pipe, and it is easy to install and move. The BV wire is a single strand of hard bare copper wire; The BVR wire is a multi-stranded soft bare copper wire, that is, the number of conductor roots is increased and the diameter of a single conductor is reduced. THE CONDUCTOR DIAMETER IS LESS THAN 1MM. When the bare copper wire is used in a 220V single-phase circuit, it can carry a current of 1KW load; If used in a three-phase balanced load (such as an electric motor) circuit, it can carry a load current of 2.5 kW.
Ordinary bare copper wire is easy to identify, very flexible, resistant to folding and stretching, repeated experiments will not affect, feel good, soft feeling. If the bare copper wire breaks or is about to break when it is stretched and folded, the quality is not good enough.