The installation height of general household switches should be 1.3-1.4 meters above the ground.

The installation height of the pull-wire switch from the ground is required to be 2 meters.

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

The concealed socket should be 0.2 to 0.3 meters above the ground.

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

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

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

According to the national standard, it is necessary to reserve a socket at about 3.6 meters

When the two-pin socket is wired, the "left zero and the right fire" are distributed up and down, "the lower zero is fired", and the three-pin socket is "the left zero and the right fire, and the ground wire is connected.

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

The current residential design code requires that the cross-section of the entrance line of each residential house should not be less than 10 square millimeters.

The general lighting switch should be installed on the live wire.

When purchasing a power outlet, you should pay attention to the three protection functions of lightning protection, flame-retardant, and overload. Do not buy the "three-no" product; check the product's rated voltage and current value when purchasing, and it should be higher than the used rating.

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

Arrange the positions of switches and sockets reasonably from a practical point of view. For example, exhaust fan switches and toilet telephone sockets should be installed near the toilet, not on the wall where the toilet enters.