Methods of connection of electric wires and cables

Twist and solder two wires

More relatively recently twist was the main method of wiring in your home wiring, and often in industrial premises.In modern electrical codes, this method is not even mentioned, although in practice, he now finds application.

It provides reliable contact soldering, to prepare for a pre-twisting quite appropriate and even necessary for a greater contact area (given that the electrical conductivity of the solder is lower than the soldered materials) and mechanical strength.

For brazing soldering required capacity of 60 - 100 watts.You must first remove the insulation of the wires (4 - 5 cm), clean them with fine sandpaper and obludit, iecover with a thin layer of solder.For copper wire may be a conventional resin (solid or in solution) or special pasty or liquid fluxes.Rosin and neutral bezotmyvochnye fluxes do not require subsequent removal, asdo not cause corrosion.Soldering acid and other undesirable active fluxes used - their residues can cause corrosion of wires and even a short circuit.There soldering materials and aluminum, but their use is not recommended.

tinned braided wire, then carefully propaivayutsya.Soldering must cool down naturally, without forced cooling, which can lead to cracks in the joint.The finished soldering conveniently isolate shrink tubing of suitable size, which when heated tightly encloses the connection.This is the most reliable way to connect electrical wires and cables both copper and aluminum.Another option - a common masking tape, preferably at least 3 layers.

Connection insulating clamps (PPE) can be considered a modern version of an old twisted wire.This is - a plastic body having a spring inside the anodized conical shape.Connectable wire trimmed to a length of 10 - 15 mm, and collected into a bundle which is wound on the PPE - clockwise until it stops.Total bond area, depending on size - from 2.5 to 20 square millimetersThe connection quality is quite high, but slightly less than that of the screw terminal blocks.

compound of aluminum and copper wires with terminals

most common screw terminals, they are often used in distribution boxes.Available in both small and very large currents.If you are using aluminum conductors, it is necessary to be careful when tightening the screws, because it is soft (and sometimes - and fragility) and is easily damaged.

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Connection and screws with washers

This is somewhat outdated version, in the absence of an appropriate screw terminals suitable size, provides the same quality can be used to connect aluminum wire to copper.

Branch clip U733

This is actually a variant of the screw terminal block, it allows you to tap on the line, not cutting it.

Connecting multiple outlets train

In this embodiment, the socket can actually be used as a screw terminal blocks, but for greater reliability of the connection wires should be solder.

Self-clamping terminals Wago

Self-clamping terminals allow the connection of the electrical wires of up to 2.5 square millimeters, the allowable current can be up to 24 A. It is a very fast way to connect and tech.Stripping is performed on a length of only 10-12 mm, does not require any twisting or insulation, or even a screw tightening.Wires are simply inserted into the terminals.Do not get so just connect flexible stranded wire.Another drawback - because of smaller contact area of ​​the compound is still somewhat less reliable than screw terminal or, especially, soldering or welding.

Connecting two cable conductors by welding

This is the most reliable way of connecting, it provides the perfect touch and very long-term trouble-free operation.Electrical wires are twisted to a length of 50 mm, made of copper wires welded special carbon electrode coated with copper.It is best to use an inverter welding machine, although other options are possible.When welding wires, as with any other welding work must be strict compliance with safety regulations.