What is the national standard for power cords?

1. Irradiation cross-linked power cable, voltage level: 0.6/1KV; executive standard: GB/T12706.1-2002. The irradiated cross-linked cable uses high-energy rays to bombard the hydrogen atoms in the molecular chain of the polymer to discharge, so that the molecular chain generates voids and forms a networked macromolecular three-dimensional structure to form the cross-linked polyethylene.

2. Medium voltage XLPE insulated power cable, voltage class: 6/6KV-26/35KV; executive standard: GB/T12706.2-2002. The medium-voltage XLPE cable adopts a fully dry chemical cross-linking method, which greatly improves its mechanical properties, thermal aging properties and environmental stress capabilities.

For home appliances, although the power cord is only an accessory, it plays a vital role in the use of the home appliance. If the power cord is broken, the entire appliance cannot be used. Household power cords should be BVV2×2.5 and BVV2×1.5 type wires. BVV is the national standard code, which is copper sheathed wire.

2×2.5 and 2×1.5 represent 2 cores 2.5mm2 and 2 cores 1.5mm2 respectively. Under normal circumstances, 2×2.5 is used as the main line and trunk line, and 2×1.5 is used as a single electrical branch line and switch line. BVV2 × 4 is used for single-phase air-conditioning dedicated line, and a dedicated ground wire is additionally provided.