How to install the power supply to meet the specifications

　　1. The installation height of general residential switches should be 1.4 meters from the ground.

　　2. The pull-cord switch must be installed at a height of 2 meters from the ground.

　　3. The installation height of the surface-mounted socket must be 1.3 to 1.5 meters from the ground.

　　4. The concealed socket must be 0.2 to 0.3 meters from the ground.

　　5. The installation height of indoor chandeliers should generally be greater than 2.5 meters, and can be reduced to 2.2 meters if conditions permit.

　　6. The installation height of outdoor lighting fixtures is generally not less than 3 meters.

　　7. The installation height of outdoor wall lamps should not be less than 2.5 meters.

　　8. When purchasing a power socket, you should pay attention to the three protection functions: lightning protection, flame retardancy, and overload protection. Do not buy products without the three functions. When purchasing, check the rated voltage and current values ​​of the product, which should be higher than the rated value used.

　　9. In order to use electricity safely at home, it is generally required that a small-capacity leakage switch be installed behind the electricity meter.

　　10. The relative insulation resistance to ground after indoor wiring construction should not be less than 0.5 megohms.

　　11. The current residential design specifications require that the cross-section of the service line to each residence should not be less than 10 square millimeters.

　　12.General lighting switches should be installed on the live wire.