Connection wires in the junction box

Junction boxes serve a very important function.They provide distribution of electrical wires between the points of consumption, ie,switches, sockets and lighting fixtures.

junction box Decided to install the devices listed above yourself?Then you need to thoroughly understand the features and how to connect cables, as well as the basic methods of their connection.

For a better understanding of the event process will be discussed in several stages: from the preparation of the necessary materials to connect the electrical outlet as an example, dvuhklavishnogo switch and light bulbs.Previously, you will learn about the basic methods of connecting cables and features rasklyucheniya box.

Methods wiring

There are several methods of electric wire connection.You can choose the most convenient and suitable option for your case.

Stranding

Currently the connection cables in junction boxes by the method of stranding smoking - it is considered to be extremely fragile in comparison with other existing options.Choosing a twist, you consciously take all possible responsibility.

The connection itself is done very simply, with wires peeled off about 10 mm of insulation, and after they are wound neatly on top of each other.When connecting wires with a diameter of 1 mm execute at least 5 turns in the case of stranding more "serious" cable - 3 turns.

Crimping

popular option compounds.Is performed using a special sleeve size wire bundle.Material sleeve also should match the cable manufacture.

For crimping products are applied pressing jaws for crimping sleeves.Folk artists often try to perform a crimping with a pair of pliers, but professionals recommend refrain from such an option, becausethe connection is not so reliable.

work is carried out in the following order.

first step

Remove to wire insulation, focusing on the length of the used cartridge.

second step

wires are twisted into a bun, and introduce them into the connector.

third step

crimped sleeve with wires Press ticks.

fourth step

perform insulation finished compounds shrink or ordinary tape.

Welding

After such a compound is obtained essentially solid wire, which is not afraid of any oxidation processes, or other negative effects that are typical of the split ways.

to connect the wires by the method of welding you need to prepare the following:

• welder 24V output power of 1 kW;
• flux;
• carbon electrode;
• protective equipment (gloves, mask / goggles).
  

  scheme welding wires

work in this manner.

first step

Remove from the cable insulation and we clean the veins to shine.To do this, use sandpaper.

second step

wire to be connected by twisting method.

third step

pour flux in deepening our electrode.

fourth step

Turn on the welding machine, presses the electrode to the cables and hold until a ball - the so-called"Contact points".

fifth step

obtained is purified by the contact point of the flux and cover it with varnish.

In conclusion, we can only insulate the finished compound.

Pike

The procedure remains the same as when connecting the wires by welding.The only difference is that the cables are connected by means of solder, the molten soldering iron.The molten solder must flow into the inside twist.

Important!The connection is very reliable and durable, but using it in places where cables can become very hot, professionals recommend to abstain.

Also not recommended for use in places of soldering possible mechanical loads on the connection.

Screw terminals

excellent method for fast and easy connection of wires in the junction box.Compact low-cost terminals allow for connection of both homogeneous and heterogeneous conductors.

work is done in two simple steps.We need to do the following:

• clean off the ends of the wires about 5 mm of insulation;
• insert the wire into the terminal and tighten the screw.

Important!Control the clamping force, so as not to disturb the integrity of the veins.In particular, work carefully when connecting aluminum conductors.

Bolting

Connection reliable but is very cumbersome.Suitable for the same bulky old-style boxes.In modern box bolted connection may simply not fit.

work is carried out in the following order.

first step

puts on bolt steel washer.

second step

put on top of the bolt on one of the connected cables.Pre-need to clean off the insulation of the cable and form a ring.With the second wire in advance do the same.

third step

We put the following steel washer.

fourth step

We put on a ring of the second wire.

fifth step

We put the latest washer and tighten the connection nut.

course, bolting also needs insulation that is not the best way impact on its size.

Self-clamping connections

most modern and popular option today.Clips are extremely simple to use.In addition, in such compounds initially present paste, it eliminates the risk of metal oxidation, which allows without any fears inserted into clips dissimilar conductors.

work in this manner.

first step. Remove approximately 10 mm of insulation from each wire.

second step. rises up lever clip.

third step .Insert the wires into the connector.

fourth step. goes down lever.

terminals without levers just snapped.

Operating scheme rasklyucheniya box

When connecting wires to the junction box is very important to know the characteristics of each cable marking.This will create a safe, reliable and generally the right mix.

For wire "zero" (on the scheme it blue) and grounding cables (marked in yellow) are connected accordingly by color, as demonstrated in theimage.At arrangement of the two-wire wiring diagram is the same, only the ground wires are eliminated.

is more complicated procedure unsoldering phase (indicated by black or red).If in a box held only cables for connection sockets, phase wires are also connected together.

If you go out of the box cables to the switch with a single click, the wire that goes to the switch must be twisted with all phases of the wires.The same cable that extends from the switch is connected to the wire phase, departing on the luminaire.As a result, compound 4 is performed.

In the case of connection through the distribution switch box with two buttons in a three-wire electrical wiring on the chandelier allowed cable with four cores.If the two-wire harness, number of wires is reduced to three, asgrounding is eliminated from the circuit, as shown in Fig.

Excluding separate earthing twist in the box created 4 connections.All wires "zeros" (marked in blue) are connected with each other.

Phase sockets and power cable are twisted together and then connected to a common terminal of the switch with two keys.On the last go 2 separate wires on the lighting unit.

Thus, there is nothing daunting in the pin-box.It is only necessary to understand the features of the designation of the wires and the order of their connection.After that, you can begin to consolidate the theoretical knowledge in practice.

To install and connect the junction box

You are invited to get acquainted with the peculiarities of all the key stages of connecting the junction box from liner wires to connect electrical appliances.

first stage - ready to work

First prepare all that is required to connect to the electrical box.The kit includes:

• cables 3h2,5, VVG;
• cables 2x2.5, AVVG;
• switch on the 2 keys;
• fixing;
• lighting;
• outlet;
• pliers;
• roulette;
• clippers;
• pliers;
• flat screwdriver;
• hammer.

second stage - making the layout

working surface at this stage mark up the installation location and the path of the electrical wires.So we can calculate the right amount of material for system installation.

third stage - Getting Started Installation

Pre switch off the electricity supply.

Summing wires to the junction box.As a rule, the cables are laid in Stroebe.To fix the cables used small nails or special plastic brackets.In the case of performance in a wooden house, the wire will be supplied by special mounting boxes.

Important!Wiring should try to pave the way so that the cables are not crossed.In case if the crossing is inevitable, such places should be isolated carefully.

fourth stage - connect electrical wires and connect

plant in pre-built into the wall or mounted on the same basis (depending on model) junction box about 10 cm wire.Remove the cables from the common envelope.Then remove about 0.5 cm of insulation from each conductor.At this moment the focus on the situation - to clean off as much insulation to conductors can be connected chosen method.

The diagram shows an example of the connection of cables through the terminals.

In this example, the connection is made using a two-wire cable, which has one core is zero, the second - phase.At zero electrical outlet and connect the lighting.Phase power cord from the outlet and connect a residential circuit breaker cable.

In our example dvuhklavishny switch.Each button is responsible for the control of a separate group of lighting fixtures.The second switch cable wire is connected to the first button, the third wire connects to the second key.

The junction box connected to the wires from the wall outlet and zero bulbs cartridges.Connect the power supply cable: zero is marked in blue, phase - red.Connect the wires to connect each radio button to the patrons lighting.

fifth stage - check the operation

system Turn off power and check the performance of our sockets and switches.Everything works fine.We have coped with the work.

Now you know the order of the connection wires in the junction box and connect each of the main features of the appliance.Using this information, you will be able to cope with all planned activities.

Successful work!

Video - The connection wires in the junction box