The difference between non-standard cable and national standard cable

The difference between non-standard cable and national standard cable

The national standard cable is 100±0.5 meters/volume, and the corporate standard cable is 80-85 meters/volume. Some small factories have even shorter ones.

1, look at the appearance of the cable

See if there is a quality system certification; see whether the certificate is standardized; see if there is a factory name, site, inspection seal, and production date; see whether the trademark is printed on the wire, specifications, voltage, etc. Also look at the material of the copper core of the wire, generally the national standard cable uses the copper wire core.

2, to test the flexibility of the cable

It is advisable to use a cable head repeatedly bent by hand. The national standard cable is a soft touch, a good anti-fatigue strength, a large plastic or rubber feel elasticity, and no crack on the wire insulation.

3, the weight of the cable

National standard cables are generally within the specified weight range. Poor quality wires have insufficient weight or are either of insufficient length or have too many impurities in the wire copper core.

4, see cable copper

The copper core of the national standard cable should be purple, shiny and soft to the touch. Copper cores with poor quality are purple-black, yellowish or white, with many impurities, poor mechanical strength, and often broken wires. When checking, you just strip the wire 2 cm, and then use a piece of white paper to slightly squat on the copper core. If there is black material on the white paper, the copper core contains more impurities. In addition, poor quality wire insulation seems to be very thick, in fact, most of them are made of recycled plastic. Over time, the insulation layer will age and leak.
 

5, see the cable price

Because of the low production cost of the wire with poor quality, the price is also low. Consumers are also asked to distinguish carefully, not the low price.