The wires in the same circuit should be threaded into the same pipe, but the total number of wires inside the pipe should not exceed 8, and the total cross-sectional area of wires (including insulation skin) should not exceed 40% of the cross-sectional area inside the pipe; The parallel distance between wires and heating, hot water, and gas pipes should not be less than 300mm, and the cross distance should not be less than 100mm.
After the PVC pipe is installed, the wires should be threaded uniformly.
Article source: New type of rural self built houses, circuit construction cannot be careless! Having hired the construction team, I can’t let go of it myself.
3、 When installing power sockets, the left side facing the socket should be connected to a neutral wire (N), the right side should be connected to a live wire (L), and the middle and upper parts should be connected to a protective ground wire (PE).
Today, let’s talk about the things that should be paid attention to in circuit construction.
The live wire from the switch should be connected to the terminal in the center of the lighting fixture, and the zero wire should be connected to the threaded terminal.
The bottom edge of the power socket should be 30cm above the ground, the bottom edge of the flat switch board should be 130cm above the ground, the height of the wall mounted air conditioning socket should be 190cm, the height of the discharge socket should be 210cm, the height of the kitchen socket should be 95cm, the height of the hanging disinfection cabinet socket should be 190cm, the height of the washing machine socket should be 100cm, and the height of the television socket should be 65cm.
To avoid mutual influence, the two should be kept at a distance of 30-50cm.
It’s safer to keep an eye on it myself.
Socket uses SG20 tube, lighting uses SG16 tube; When the pipeline length exceeds 15m or there are two right angle bends, a pull box should be added; The groove depth should be consistent, usually with a PVC pipe diameter of+10mm.
Hurry up and learn! 1、 When designing wiring, execute strong current on and weak current on.
The high-power water heater also needs to be wired separately
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The lighting circuit is 16A, the socket circuit is 25A, the kitchen and bathroom circuit is 32A, and the air conditioning is wired separately.
2、 The concealed laying of wires through conduits must be equipped with flame-retardant PVC pipes.
The power supply, telephone, television, and other socket panels in the same room should be at the same horizontal elevation, and the height difference should be less than 0.5cm.
The 1 horsepower air conditioner is 16A, the 1.5 horsepower air conditioner is 20A, the 2 horsepower air conditioner is 25A, and the 3 horsepower cabinet machine is 32A.
When connecting the wires of switches and threaded lighting fixtures, the live wire should be connected to the switch.
Strong electricity is used as a power source, while weak electricity is used for information transmission.
The circuit construction is well done, and the later maintenance is much easier.
4、 The selection of Residual-current device shall be equipped with strong and weak current boxes, and the distribution box shall be equipped with a Residual-current device with an action current of 30mA.
The total power supply is 63A (the main power supply serves as a power on/off function, usually larger, with branches for overload tripping).
