Use the wire that meets the requirements. The current carrying capacity of the wire should meet the requirements of the line load and leave a certain margin. The wire should have sufficient pressure resistance and insulation properties while having sufficient mechanical strength. Generally, indoor sheathing is usually made of plastic sheathed wires.
Try to avoid the joints in the wiring. When wiring, use the entire wire with the intact insulation layer to be placed at the head once, and try to avoid the wire joints in the wiring. Because the joint of the wire often causes an increase in contact resistance and a decrease in insulation performance, a hidden trouble is buried in the line. If it is a dark line laying (in fact, the indoor wiring is basically a dark line laying), it is difficult to find and repair once there is a fault such as poor contact or leakage at the joint. The necessary connectors should be arranged in the junction box, switch box, lamp box or socket box.
The wiring should be firm and beautiful. The conductors laid on the open line shall be horizontally and vertically fixed and firmly fixed. The wire trough is flat without distortion, the inner wall is free of burrs, the joint is tight and straight, and various accessories are complete.