Wiring model name:

1. Classification and use are used for the distribution of current, which belongs to the wiring class and is represented by the letter "B";

2. The conductor material is copper, which is represented by the letter "T". The copper conductor in the wiring is omitted.

3. The insulation material is polyvinyl chloride, represented by the letter "V";

4. Wiring structure is simple, in addition to the above three points, some have sheath, sheath material for PVC also use the letter "V";The letter "X" denotes the sheath material as rubber.If you don't have a jacket and if you don't have one at the back, you don't have to show it.

For example, BVV represents copper core PVC insulated PVC sheathed circular wire.