- Scope of application
- Preparatory work
- Assembly technology
- Recommendation from practice
Scope of application
According to chapter 2.1 of the EMP, this method is applicable for networks up to 1000 volts. Most often, cable wiring is used in places where the VL organization does not make sense, but it is enough to throw a cable attached to the cable, and this will be enough to electrify the object.
In this way, lighting and wiring for outlets in warehouses, power cables in production halls, and between two separate buildings are carried out.
For a home master this method of posting has a certain interest. All because with the help of simple technology there is an opportunity to electrify farm buildings in the country. Thanks to the cable wiring it is possible to carry light from the house to the bathhouse, garage, barn, gazebo and other spaced-out buildings and lighting devices.
Preparatory work of
First you need to determine the wire and its cross-section. About how to calculate the cross-section of the cable, we told in the relevant article. After this, you need to measure the length taking into account the entire route of the wiring from the machine to the distribution board. When choosing a cable and suspension elements, one must take into account the weight of the wire in this section, with a three-fold safety factor. As the load on the suspension structure increases in difficult weather conditions, it can cause breakdown and de-energization. The main use is a steel galvanized cable with a diameter of 4.6 to 6.8 mm. In cases where the length of the suspension is small and the weight is such that it can be neglected, a string string can be used instead of the cable wiring( galvanized steel wire or lacquered hot-rolled wire from 5 to 10 mm is pulled).
Mounting technology
First, you need to fix the anchor section and the securing elements of the cable wiring to the selected section of the anchor. Most of this steel plates are pulled from both sides of the wall by studs, and welded to them by rings to suspend the cable. The tension of the fastening is done to strengthen and avoid their falling out, distributing the weight of the load evenly over the wall, and not at the fixing points.
Next, you need to fasten the cable with one of the special loop cable clips on the other side, on the other hand, tighten it to the maximum and screw the screw couplings to the state of the string.
The height of the suspension must not be less than 2.75 meters above the pedestrian zone, and not less than 6 meters above the road pass. All the norms of the air wiring, including the distance between the supports, are indicated in the diagram:
After installation, the strings begin to tie the cable with a bandage. To hang the cable harness in the street, you can use plastic clips, galvanized iron bands, knitted galvanized wire. The distance between the bandage is 50-80 cm.
Recommendation from the practice of
When using a binding wire, it is necessary to prevent the cutting of the core into insulation, for this, a gasket is made between the shroud and the wire made of insulating material. The winding area of the bandage should be maximally distributed by laying 7-10 turns of the shroud. When using plastic clamps, please specify their performance data. Otherwise, in winter in the cold or very hot summer, you will find scattered yokes.
When laying the cable over the cable, it is also necessary to protect the line from the medium to the insulation, so it is recommended to stretch it in the corrugation, as shown in the photo below. This will then reduce the cost of operation and restoration of the cable wiring.
With a short span or no possibility of fastening to the cable at the installation site, it is possible to assemble the suspension on the ground. Already prepared design can be tightened and attached.
Following our instructions, you will be able to independently conduct wiring to free-standing buildings in the country. We also recommend viewing a useful video that shows how to make a loop on the cable with your own hands:
That's all I wanted to tell you about how to install the cable wiring yourself. As you can see, cable laying on the cable is a rather labor-intensive exercise, but nevertheless the home master can do it!
It will be interesting to read:
- How to conduct a cable in corrugation
- Underground wiring harness
- How to make lighting in a garage without electricity
