When installing any electrical wiring, a reliable connection of wires is required. In the middle of the last century, when housing was massively built, wiring was carried out with aluminum wire. This was done for economic reasons. The connection of wires in such wiring was carried out by twisting. If the twisting was performed correctly, then such a connection without preventive maintenance served for quite a long time.
In those days it was the most reliable connection, and there were simply no other ways. There were no particular problems, since there were few household appliances in the apartments of ordinary citizens, and the power consumption remained small. Therefore, aluminum wire wiring and twisted wire connection satisfied everyone.
Today, literally every apartment is crammed with household appliances and appliances. The power has increased, therefore, special requirements are imposed on the wiring, which are specified in the Rules for the installation of electricalinstallations. According to this document, the connection of wires can be made only in three ways: welding, soldering or using clamps.
There is no twist in this listing. Twisting is allowed by modern rules, but this connection must be temporary before welding or soldering.
Welding is the connection of wires by contact heating of their ends with a carbon electrode to form a point of contact. This method is very reliable and of high quality.
Before welding, the wires are stripped of insulation and twisted. A flux is poured onto a flat electrode, where we subsequently lower our twist. We press it to the electrode and start the welding transformer.
The ends of the twist will fuse. The result is a contact point. Next, the connection is covered with a special varnish and insulated. This is how wires are welded.
You can connect wires with molten solder. This method is called soldering. To solder the wires, you need to remove the insulation from their ends and connect them. Can be twisted. The soldering iron heats up the solder and transfers it to the twist. After hardening, the solder joint is washed with alcohol and isolated
Crimping. For this type of compression connection, a hand press is needed. Connected wires are twisted. The twist is placed inside the copper tube and pressed in.
And finally, the screw connection. This connection is made using a terminal block. The twist is inserted into the terminal block and clamped with screws, and thenjust isolating.
And where can I apply the wire connections described above? They are usually made in distribution boxes. The connection of wires in the junction box can be done in different ways. Each electrician has his own technique, but the most commonly used is an insulating clamp connection. It is very reliable. And the main thing is that it is a detachable type of connection. If the electrician did not like something or something was done wrong during the installation process, then such a connection can be quickly disassembled to correct an error or inaccuracy and just as quickly make the correct installation.
