External electric external electric and magnetic fields

External electric

External wiring is the wiring, which is laid on the outer walls of buildings, sheds , between buildings on poles outside of streets and roads. It can be open and hidden . Wire field wiring must be protected or inaccessible to the casual touching them. From the point of view of the design space and energy indicators ( wire under the plaster cools better than the open air) hidden wiring better open .

But the flush has its drawbacks . Basically, it is a necessity shtrobleniya walls and subsequent recovery , construction waste , complexity of work performed , the complexity of diagnosis and subsequent upgrades. This is especially difficult wiring inside the wooden buildings.

Inside buildings during the change of ownership is often open wiring . Open wiring is preferable in structures and buildings made ​​of combustible materials.

External wiring is most often used to enter the electricity in the building. Yet it can help carry the electrical energy for various utility rooms : bath, garage , shed, backyard workshop and others.

Installation of field wiring

When routing the wiring In bare wires on poles around the building to keep a distance of 1.5 m from the wire to the balcony . Make installation of wiring In the roof is strictly prohibited. This is possible only when the power supply for input branch is housed . When crossing the road away from the wires to the road surface must be at least 6 m distance from the wire to the ground is allowed to sustain not less than 3.5 m, if the wires do not cross the roadway.

Also, the distance between the wires should not be less than 0.15 m

Open wiring transit of cables and wires through pantries and storage areas shall be prohibited.

Running Outdoor Electricity

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On the grounds of the fuel wiring and cables must be performed at a distance of not less than 10 mm from the base . If you can not do that , you need to separate the cable or wire from a combustible surface layer of non-combustible material .

Usually, the hidden wiring must be used in bathrooms, showers and bathrooms . Allowed open wiring .

Despite the advantages of outdoor electrical wiring, its use is only permitted in unheated raw and non-residential premises , as far open wiring is unsafe and can be easily damaged. If you can not use flush , you can use the cable channels or corrugated pipe. This will increase the electrical room and add aesthetics to your home.

If you want to add outlets and switch appropriate use of cable channels . This will keep the interior elements . Also in the cable channel can tuck the wires ” low current ” – the Internet and telephone.

When exposed wiring must be installed in non-residential , utility rooms is better to use a corrugated pipe. In terms of installation , it is much easier for cable channels. It is easy to bend in the right direction, it can be cut , to make the corners .

The use of electrical baseboards will be a good alternative to cable channels and corrugated . Electrical baseboard is virtually no different from the usual , but it is inside a carrying part in the form of a cavity . Its use will help avoid serious installation errors . When buying electrical baseboard note that it involves the use of internal and external corners for mounting.

Seal exterior wiring on brackets

With this method it is better to use hard laying single core cables in a double or triple insulation from the copper wire . Electrical cables attach straps directly to the surface when the installation is a single cable and conductor cross-section is less than 6 square millimeters .

If you want to use a cheaper cable , you must install a fireproof lining. Typically, a metal or asbestos. To place spacers so that it protrudes 10 mm from each side of the cable. Also possible to provide an air gap of 10 mm from the base fuel . Another way resembles the installation cable on ceramic insulators.

Asbestos is a toxic material , so the manufacture of open posting his best not to apply. If you are using a cable double or triple insulation proper section, then you can give up the pads. In terms of aesthetics, this method is very controversial , but the cheapest.

Seal wiring In a corrugated tube

This is the preferred method , as the special electrical corrugated pipes do not support combustion and mechanically protect electrical cables . Pipes attached to the walls of plastic and metal ties or special clips . Several cables can be tightened in one corrugation . But the modification of the wiring will have to change all the cables are stretched in one corrugation .

Corrugated pipe looks better than a single cable, and it fits well on uneven walls cylindered logs. Also, such a pipe provides an air gap between the wall and the cables outdoor wiring . You should know that when it comes to open wiring in wooden houses , the walls of the passage is necessary to use metal sleeves . In the case of wood shrinkage they protect the wiring.

Laying outdoor wiring stranded wire on insulators

This is the first method of wiring, which can be seen in the village houses of the last century . Now this method back into fashion (open wiring with twisted wires). But with the materials is difficult. At this moment it is very difficult to obtain ceramic insulators for open wiring . We’ll have to make a twisted wire by hand. This is perfect for stranded copper wire , preferably with double insulation and a section of at least 2.5 square millimeters.