Grooving depth is consistent.
Grooving depth should not be uneven, should be consistent. Generally, the diameter of PVC pipe is 10 mm .. Try not to slot horizontally.
Flame retardant PVC pipe
The laying of dark wires must be equipped with flame retardant PVC pipes. SG20 tube for socket and SG 16 tube for lighting. When the pipeline length exceeds 15m or there are two right-angle bends, cable boxes should be added. The position of the lamp on the ceiling is fixed by a cable box.
ground pipe
The wiring generally adopts the way of buried conduit. There are two kinds of conduit: cold-formed conduit and PVC conduit. Cold-formed pipe can be bent without breaking, which is the best choice for wiring, because its corner is radian, and the wiring can be replaced at any time without opening the wall.
Cold bending tube radian
Bending tools should be used for cold bending pipes, and the radian should be 10 times of the pipe diameter, so as to thread or thread smoothly.
Strong and weak current separation
The distance between strong electricity and weak electricity should be 30-50 cm, not in the same tube, because strong electricity will interfere with your TV and phone. The total cross-sectional area of the wires in the pipe should be less than 40% of the cross-sectional area of the protective pipe. For example, up to 4 wires with a square of 2.5 can be inserted into 20 pipes.
Grouping wiring
Lighting, sockets, air conditioners, water heaters and other circuits in different areas of the home should be wired separately; Once an army needs power outage maintenance, it will not affect the normal use of other electrical appliances.
Conductor cross-sectional area
When wiring the power cord, the cross-sectional area of the conductor used should meet the maximum output power of the electrical equipment.
Distance between pipeline and pipeline
The parallel distance between the line and the heating, hot water and gas pipelines shall not be less than 300mm, and the crossing distance shall not be less than 100mm.
Same horizontal height
Indoor strong and weak current wiring, electrical appliances and lamps are behind the box table. The socket panels of power supply, telephone, TV, network, audio and video in the same room should be on the same horizontal plane (except those with special requirements of users), and the height difference should be less than 5mm.