The definition of "piercing boxes" is the most popular among professional electricians. However, the adaptations of this plan are often called distributive and tap-off. Regardless of the name, the essence of such means for performing wiring is to organize safe nodal wiring connections in accordance with the developed scheme.

Raspail boxes: basic types, mounting featuresDepending on the need to implement these or those tasks, the following boxes are distinguished:

  • For open wiring.
  • For internal wiring.

It is extremely simple to install the junction boxes intended for open wiring. In this case, the mounting means is fixed directly to the surface of the wall with screws. If it is necessary to connect the conductors, which are located in the thickness of the walls, it is enough to prepare a small opening, where the body of the distribution product is placed.

Application features

Thanks to the branching devices it becomes possible to carry out professional electrical installation, organize a reliable wiring, which feed electrical appliances and individual systems.

Raspaychnye boxes contain a removable cover, which easily and reliably slams after the completion of work. Cases of individual products of this category have the intended holes for the wires, which break through as necessary.

Regardless of the type, whether it is a box for indoor or outdoor wiring, secure fastening presupposes landing on dowels and screws. The fasteners for fixing the switchgear can be made of both metal and plastic. The last option looks more preferable. Because the plastic can not be corroded.

How rational is it to refuse the use of piercing boxes?

Can I do without the installation of distribution products? Theoretically yes. However, this will have to connect each zone of energy consumption with the switchboard by means of separate wires. Such a decision will lead to significant costs for the purchase of funds for the implementation of electrical wiring. In addition, in this case, deep shrouding of surfaces is required.

How much are the Rack-Boxes? The price of a standard plastic device for universal use starts from 10-15 rubles. Carbolitic and ceramic products are more expensive. Significantly reduce the cost allows the purchase of distributive boxes small wholesale.

Apparently, the reluctance to purchase switch boxes leads to serious labor costs and causes even greater costs. Although there are still arguments against the use of raspaychnyh devices. So, some masters consider the laying of individual wires by the method of wall shrouting in a safer way, since it eliminates the connection of electrical conductors at numerous points throughout the house.

Without a doubt, such an opinion has the right to exist. However, the use of a correct, professional approach to the installation works completely eliminates the possibility of short circuits in the junctions and avoids fires.

The installation process differs little from fixing on the surfaces of the same podrozetnikov. The difference lies in the need to create more voluminous holes in the ceilings.

The main requirement for assembling the welding boxes is to maintain the required depth of the opening, at which the edges of the product will go level with the wall surface. Proceeding from this, it is desirable to engage in the installation of distribution facilities only after the completion of plastering. Otherwise, it will be extremely difficult to sustain the required distance.

If you plan to cover the walls with a decorative layer, you need to make sure that the junction boxes are easily accessible, which may be required when servicing the line or performing repair work.

Understand the installation of the switchgear can be so-called rapid method, which involves planting on cement or alabaster. To begin with, the cable is inserted into special openings in the walls of the product. Then the wires are placed in the terminals for the boxes. In the absence of the latter, the electrical conductors are connected in the middle of the case by twisting.

At the end, the landing hole in the wall is cleaned of debris and contamination, filled with mortar. Then the box body is placed in the opening to the required depth. Unevenness is eliminated, after which it remains only to wait for the solution to solidify.

The wires in the junction box are broken down elementary. Conductors are connected in parallel according to the colors of insulation, the shades of which are identical regardless of the manufacturer of electrical installation products.


Raspaychnaya box - an effective tool for the rapid organization of reliable nodes of electrical conductors. Placing the connections in the middle of the distribution device protects the occupants from accidental electric shock and the occurrence of fire-hazardous situations, which can not be said about the surface installation of wires by the twisting method.