The aluminum and copper wires - how not to miss ?

Why the connection of aluminum and copper wires requires attention?

Modern electrical consumers (washing machines, air conditioners, kettles, irons, etc.) High power often require replacement of the entire internal network in an apartment or house.To do this, use copper wire, but the network connection of the apartment have to do to the power cable - entry, made of aluminum.

Then it becomes urgent task to combine aluminum and copper wire.The same pattern is observed when connecting the built house.And then the power transmission lines are made from aluminum, while at the same time, the internal wiring is made of copper wire of the corresponding section.

With this layout, the project provided, we have to make numerous outlets for lighting devices, sockets, and so on. The connection of copper conductors can be done by twisting, soldering, welding or using a patch box or clips.

Twisting wires of copper, not a recommended way of connection can be made for single or multi-strand wire, provided their thorough cleansing in the joints of not less than 5 cm in length.If they are thin enough, they can be welded using an ordinary match flame.

Copper wire is very thin cross sections can twist, not stripping.Twisting to dip into acetone and, after wiping placed in molten tin.To do this, it is quite suitable conventional electrosolderers.Fulfilling twist stranded wires, it is necessary to provide splesnevanie lived as direct lay, and in the implementation of taps.

Ways of copper wires

most reliable way how to connect the copper wire, twisted with a combination of soldering tin-lead solder or weld connection.For frequently used welding compact welding machines (inverter), it is very convenient because of its light weight and ability to provide the necessary current (35 A).

Operation is carried out using coppered graphite electrode, in the absence of quite suitable graphite brush of motor.Welding can also be carried out using a gas burner.These methods are applicable to aluminum.

fairly simple and reliable method will opressovyvaniya bandage and solder connections.Care should be taken to isolate the space twisting or welding.For this purpose, insulation materials in the form of sticky fabric and plastic tapes, heat shrink tubing, and so on. D.

reliable way to

combined wiring wondering how to properly connect the copper wires, one can not but recall the terminal screw connections.This method, being quite versatile and reliable, has its drawbacks.In particular, using this type of connection, you need to remember to bias the screw connections, due to strength of materials.This particularly applies to aluminum.

Furthermore, using the core wire, at its ends to seal better special crimping terminals.Welds connections improves its reliability.Terminal and bolted methods can correctly connect the aluminum and copper wire.It has been known about the inadmissibility of direct contact of copper and aluminum.

Due to the varying degrees of oxidation and conductivity of materials, contact potential difference, with an increase in load possible sparks, heat, fire of such compounds.If the connection point is exposed to external atmospheric influences, these processes are enhanced, electrolysis can occur, leading to the destruction of shells and contacts.

Therefore, wiring copper-aluminum is carried out only with the help of these methods .Enough reliable and easy to work became popular contact systems WAGO , do not require special tools and equipment.It is suitable and bolt connection, subject to the exclusion of direct contact.

For this between the wires enough to put a simple steel washer and nut to hold the usual screed.In this case, a junction must be reliably isolated.The most appropriate is to place in the joints and taps special boxes, allowing easy access for routine inspections and maintenance.