- Nut clamp
- Clamping clamps
- Clamp type AS AS8888D Clamp type
- Grandfather's clutch
Clamp nut
When we considered the basic ways of connecting the wires in the junction box, special attention was paid to a special nut-type clamp. The product has a fairly simple design, but, despite this, it makes it possible to make the branch reliable and durable. Compression nut is made of carbolite case, steel plate and plate, which actually presses the veins with four screws.
The compact size of the nut, as well as its low cost, makes it one of the most popular couplers for the power line. In its turn, the disadvantages of the product are low tightness( degree of protection IP 20), as well as the absence of the possibility of tapping live wires under voltage. It should also be noted that a very important advantage of "nut" is the ability to connect copper and aluminum wires with a cross section from 1.5 to 150 mm2 in quality.
All you need is to place the stripped contacts in a special plate and carefully tighten the screws with a screwdriver, then snap the housing.
Puncturing clamps
The advanced model of cable nut clamping is piercing clamps. Disposable products, however, allow you to make a branch wire without cutting and even without cleaning the insulating layer during splicing. The construction of the clamp is represented by a hexagonal head, which tightens the veins, as well as contact plates with teeth, which actually pierce the insulating material.
Advantage of these products is as follows:
- branch off the wires from the overhead line( VL) can even be energized without fear for its safety. This is due to the fact that the contact plate is securely insulated from the clamping bolts;
- the body of the products is sealed and reliably protects the junction from bad weather conditions;
- clamps are simple to operate and have a long service life;
- low cost of products;
- possibility of bonding copper and aluminum conductors.
As for the shortcomings, the main thing is only "disposable" products, but this point is very controversial, given the durability of this method of branching the wires without breaking.
Installation is carried out in the following way:
Clamp type OB
When repairing or replacing the electrical wiring in the apartment, it is fashionable to use another rather good option for splicing the wires - using clamps of the type OB.The products have the simplest design and no less simple principle of operation - the cable is placed in a special latch, which bridges the insulation layer of the conductor with a brass connector. As a result, in a few seconds you can make a good branch from the main power cable( for example, to the socket).
As for the disadvantages of latches, the main is limited use conditions - the cross-section of the conductors should not exceed 6 mm2.In turn, for home electrical wiring such a section would be enough even for connecting a powerful electric plate.
Video instruction for using a latch for a branch wire without cutting:
Terminal block DKS
A more obsolete way of branching the wire is to use the DCS terminal blocks. Compact terminal blocks are not recommended;in this case, it is impossible to do without cutting and breaking the main vein. In addition, the terminal block has still such drawbacks as poor sealing and the need to periodically tighten the clamping screw, especially if the conductor is aluminum. As a result, you do not get any important advantages in splicing and at the same time you get several serious drawbacks.
Grandfather twisting
Well, the last method of tapping wires that can be used is to twist a new line from the passing line without additional soldering or welding. In this case, it is necessary first to clean the insulation of the conductors, after which the branch line should be properly screwed onto the main( as shown in the picture).
We draw your attention to the fact that during the creation of twisting it is forbidden to connect aluminum and copper wires. Conductors must be made of one metal. The use of this method is highly discouraged because of its unreliability. For information on how to correctly twist the wires, read the provided article!
Here, in fact, we provided the most popular ways of branching the wires without breaking and cutting. Now you know, what can be done high-quality splicing of two power lines. Our advice - use piercing clamps, which among all options cause the greatest confidence!
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