Electrical box : how to connect wires

What boxes select

Junction Box - a simple electrical device, install that, especially with the open layout of networks, capable of any person who does not skip class physics.But when you consider that any connection of electric wires (twisted, spikes, terminals) are high-risk sites, then refer to the installation the junction box should be with great care and precision.Overheating, or even worse, the melting of the electric wire due to careless connection, at best, will leave you without light, in the worst - without a home.

By mounting type, location, time and method of installing these containers wire can be divided like this:

• electrical boxes for open wiring, is almost universally used in the construction of the country;The advantages are obvious: easy access, the possibility rasklyuchit contact groups to make additional findings for the new electrical equipment;
• electricity distributors placed under the internal finishing works;You agree, convenient and aesthetically it is advisable to place a web of cables and place them in the joints drywall sheets or under half (tensioner) ceiling;
• stationary boxes, placed in the walls of the building;installation of junction boxes is carried out during the construction phase and meets the SAE (rules of electrical device).

Remove elektoraspredeleniya and change the configuration in the third embodiment, without the participation of qualified electricians, we do not advise you, but in the first two cases, to dissolve the electricity in the house, you can own hands.The importance of (technical and design) is the size of the insulating container, which is selected depending on the complexity of the electrical supply circuit premises.Thus, the terminal boxes of the same degree of protection IP54 may be size and 85h95h60 mm 210h280h90 mm.Feel the difference.

How to connect the wires in the box

Connecting electrical wires in the junction box can be carried out simply, intricately and professionally.Samih ways to ensure proper contact surface is not so much.

• Stranding .The simplest connector wires.No skills are required.Remove 3 cm insulation and gently twist the ends (phase-to-ground zero not confuse) among themselves.Possible negative effects of the mounting conditions in the country - the rapid oxidation, breach of contact and as a result, emergency shutdown of electrical equipment;
  
• Pike. In this case, it's just a tin solder wires twisted.Ability to use a soldering iron is welcome, but is not mandatory.Already in the third docking experience there.Tin tin contact group largely protected against corrosion and obviously last longer;
  
• Welding. This is a professional installation method most often used when wiring the power grids in urban apartment buildings.The method is fast, but it requires special equipment (the device for at least 500W, carbon electrodes) and skills;
• pressurization. most time-consuming option of fixing the cable twist, suggesting the presence of grooved sleeves, picked up by wire diameter, and professional press jaw.Pliers and other hand-held clamping devices should not be used here.
  

In the latter two cases, the connection wires in the junction box and the ability to change its rasklyuchit circuitry dramatically reduced.The ends have to be cut, the length of the conductor may not be enough.So you can safely assume that a node is fixed and unchanging.

Warning: isolate twisting necessarily always!

Securing exploitation

What should I look for when buying and install a junction box.

1. material. desirable self-extinguishing PVC plastic.Such valves under extreme loads on the network will be some time hinder the fire.
2. Type box. sufficient but not excessive amount of wire-O inputs, the presence of the rubber sealing tubes, terminal group, or a sufficient volume for isolated twists.
3. Protection. Usually it is listed on the packaging of the electrical box.For internal wiring in residential, dry or heated rooms sufficiently IP20 category for external networks and high humidity conditions is better to start with IP55.

If you carefully selected and properly carried out installation of the electrical junction box in his home, the light and the accompanying joy will please you, even far away from civilization.