The wiring is never complete without connecting the wires. The higher the power consumption in everyday life grows, the more important is the correct connection of the wiring wires, which would ensure the requirements for electrical and fire safety. Correct connection of wires is the level of contact density, as well as the electrochemical compatibility of metals, connected wires.
Contents
- How to connect aluminum and copper wires in this situation?
- Make it very simple
- Video connection of copper and aluminum wires
Now many apartments still have aluminum wiring. As soon as there is a simple task in such an apartment to replace a chandelier or a socket, the problem of connecting aluminum and copper wires can arise.
It is known that the direct connection of these metals is strictly prohibited and is a gross violation. Direct contact between copper and aluminum is unacceptable because of the incompatibility of these metals. Under the influence of moisture, such a connection becomes unsafe: it can cause a fire.
Dry contact, though slightly more reliable, but also unsafe: it will simply collapse more slowly. If such contact suddenly gets wet, an accident may occur even with a slight current.
How to connect aluminum and copper wires in this situation?
There are several ways, here are the main ones according to the ASE:
- Using the terminal clamps
- Using the
- threaded connection Using a layer of neutral material
- Using the
welding Perhaps the simplest way is using a layer of neutral material. lead-tin solder acts as a neutral metal.
Do it very simply
- With a stationery knife, carefully cut and remove the insulation from the wires by about 6-7 cm. Do not put the knife perpendicular, so you can cut the core of the wire. It is better to do this at an angle, approximately the way you sharpen a pencil.
- Use a soldering iron to coat the copper wire with solder. To do this, we collect the solder on the soldering iron solder and dip it into rosin. After rosin melts, very quickly we conduct a sting on the wire.
- Make sure that the copper wire is well irradiated. The solder should completely cover the wire.
- We do the twisting of irradiated copper and aluminum wires. Good twisting should take as a result about 4 cm.
The method is good in that it does not require the presence of clamps, or if the bolted connection does not fit into the box.
Despite the fact that the method is simple and fast, nevertheless, if the cumbersome connection is not a problem - it is better to use a threaded connection, it will be more reliable. The threaded connection of copper and aluminum wires is also quite simple. For this type of connection, it is necessary to prepare a spring washer, three simple washers and a nut. If the conductors have a core diameter of up to 2 mm, select the screw M4.
- Remove the insulation approximately four times the length of the screw.
- We clean the metal to shine and form rings.
- We put a spring washer on the screw, then a simple washer, then a ring of one conductor, a simple washer, a ring of the second conductor, a washer, a nut.
- We screw the screw and pull it all together until the spring washer is straightened and press it down about half a turn.
If the copper wire is stranded, it must first be welded. Do not forget that such connections must be checked periodically: the optimal frequency is once a year.
It is highly recommended to call electricians-professionals if you are not confident in your abilities! After all, working with an electrician is dangerous for health and life!
