Installation method and matters needing attention of electric wire

In old houses, we can often see many intricate wires hanging in the room. At that time, I was still young and didn't know the danger of that installation. With the progress of home improvement technology, the previously exposed wire installation method has been eliminated by the times, and the safer bright/dark installation method has been sought after by the market. Get to know it with me!

Find out the usage of this line

L stands for fire line, n stands for zero line, also called zero line. Red, yellow and green wires are usually used. Red is the fire line, blue is the zero line, and the yellow-green double-color line is the ground line. For sockets, the right socket is the live wire and the left socket is the zero wire.

wire winding

The wire connector shall be wrapped firmly, smoothly and without burr. Before the wire connector is disconnected, press it with steel wire and then wrap it around the opening to ensure that the wire connector is disconnected. When connecting two insulated wires, it is necessary to peel off the insulation skin of the wire joint, wipe the inner core clean, and then twist and weld the wire joint.

Use of joint

When wires are connected to switches, fuses or other equipment, the wire ends must be welded with special joints, and the direction of the ring sleeve must be consistent with the direction of tightening screws, so as to avoid loosening the wire ends when tightening nuts.

Matching use

In order to prevent wires from contacting combustible substances, the type of electrical appliances selected should not exceed that of wires, so as to avoid premature aging of wires and fire.

Connection mode

In the process of laying wires, try to avoid joints, because there is often a large resistance at the joints, which leads to the heating of wires and accidents. If it is really impossible to avoid the joint, it needs to be wrapped tightly with insulating tape.

Correct use of grounding wire

For some washing machines and refrigerators that need three-phase plugs, reliable grounding wires must be installed.

Reasonable installation form

A. surface-mounted equipment shall be laid along the wall and ceiling. Note that the wires must not be squeezed or folded when the home is exposed, and the wires must be firmly fixed. B. Concealed installation refers to wires laid in walls or ceilings. For safety reasons, concealed installation must be operated by professionals.