Determining the quality of home appliance installation requires a comprehensive inspection from four dimensions: electrical safety, mechanical stability, normal function, and compliance with regulations. The specific criteria and procedures are as follows:
1. Electrical Safety: The Core of Preventing Electric Shock and Fire
Correct Socket Wiring: Use a socket tester to insert the socket and test it. The N (neutral), L (live), and E (ground) lights should illuminate normally. The ground wire must be effectively grounded, especially in damp areas such as kitchens, bathrooms, and near water heaters.
Effective Residual Current Device (RCD): Pressing the "TEST" button on the RCD in the distribution box should immediately trip the power, ensuring automatic protection in case of leakage.
Dedicated Circuit Matching to Load: High-power appliances (such as air conditioners, electric water heaters, and ovens) require independent 4mm² or higher copper wire circuits and a dedicated 16A socket to prevent overload and fire hazards.
2. Mechanical Installation: Ensure Stability and Durability
Equipment Level Stability: Refrigerators, washing machines, etc., must be calibrated with a level and the feet adjusted to ensure no wobbling; wall-mounted TVs, range hoods, bathroom heaters, etc., must be fixed to load-bearing walls or reinforced structures to prevent them from falling off.
Heat Dissipation Space Compliance: The back of the refrigerator must be at least 10cm away from the wall, and the sides at least 5cm away; built-in appliances (such as ovens and disinfection cabinets) must have adequate heat dissipation clearance according to T/CHEAA 0004-2023 standard to prevent damage from high temperatures.
Sealed Pipe Connections: There must be no leaks at the connections of the washing machine's inlet and outlet pipes and the range hood's exhaust pipe; a check valve must be installed on the exhaust pipe to prevent backflow of smoke.
