Standard connection of wire connector

Hydropower projects occupy a very important position in our home decoration. Similarly, when we connect wires, what is the most correct way to connect them?

Many workers may connect like this, and then it will be fine. In fact, this connection is not the most standard connection.

First, the basic requirements of wire connectors

1, and the joint resistance cannot be greater than the conductor;

2. The mechanical strength of the joint should not be less than the strength of each wire itself;

3. The insulation of the joint cannot be lower than the main line;

4. The connector has good corrosion resistance and oxidation resistance.

Second, the basic specifications of wire connectors

1, the reserved length of box thread is about 15-20cm, and then the remaining insulation skin, paint layer and oxide layer are scraped off.

2. Wiring color code: generally, red is used for live wire, blue for neutral wire and color for ground wire; If it is a dual-control switch with multiple live wires, it needs to be distinguished by other colors.

3. Hot canned food. All threads shall be tinned according to specifications.

Third, the connection of the wire ends.

1, single core and single strand, same diameter

First, cross the two wires, then wrap them around each other for two or three turns, then straighten the beam end at 90 degrees, then wrap another wire at each end for five or six turns, and then cut off the redundant ends.

2. Single core and single strand with different diameters

Wrap the thin thread around the thick thread for about five or six turns, then fold the thread end of the thick thread back and press it back, then continue winding the thin thread for three or four turns, and then cut off the extra thread end.

3, 1 packing 2

One is straight, and the other two are wound side by side. Then fold the straight wire in the middle back and flatten it, and then cut off the excess thread and straighten it. This winding is stronger, but more difficult.

4. Single-wire T-shaped sub-connector

Stripping the insulation skin from the middle of the trunk line core, and then tightly winding the branch line end on the trunk line core; If necessary, you can tie a knot and wrap it tightly for 5-8 times.

Of course, there are many other connectors, so make sure that if the wires are on the same parallel line, the connectors must be staggered to avoid leakage caused by poor insulation protection.

Fourth, insulation treatment.

1, heat shrinkable tube. Coat the joint with a layer of waterproof glue, and then insulate it with heat shrinkable tube.

2. Line pressing cap. If multiple wires are connected, it is not applicable, simple and practical. However, the crimp cap is disposable. If there is any maintenance, the crimp cap needs to be replaced.

3. magnetic tape. Wrap one layer with yellow tape (adhesive) first, and then wrap it with tape twice.