Matters needing attention when selecting wires and cables

Cables and wires are mostly composed of one or more insulated conductors plus insulation and sheathing, which are mainly used for power or information connection. Cables and wires are used in power systems, information transmission, etc.
How to choose the cable:
1). The finished insulated wire and finished wire can be connected to the voltage experiment according to the rules after being placed in 20 + 5'C room temperature water for at least 150c for 1 hour.
2) Wires and cables have excellent electrical insulation properties, mechanical properties and non-continuous functions:
3) The insulation or sheath of the finished wire shall be marked with the name of the factory, type and voltage level.