For home appliances, although the power cord is just an accessory, it plays a crucial role in the use of the appliance. If the power cord breaks, the entire appliance cannot be used. It is recommended to use BVV2 for household power cords × 2.5 and BVV2 × 1.5 model wires. BVV is a national standard code for copper sheathed wires × 2.5 and 2 × 1.5 represents 2-core 2.5 square millimeters and 2-core 1.5 square millimeters, respectively. In general, 2 × 2.5 Main Line and Main Line, 2 × 1.5 Make a single electrical branch line and switch line. BVV2 for single-phase air conditioning dedicated line × 4. Install a dedicated ground wire separately.