How to lay a power cable
You will need
- - steel rope;
- - vibrating plate;
- - metal stocking;
- plastic funnels;
- - polyurethane foam;
- - signal tape;
- - power cable;
- - equipment for trenching.
Select cable brand. You should know that for laying in the ground is recommended to use armoredcable. If you choose unarmoured cable brands, they should be laid in PVC or asbestos cement pipes.
Explore the geo-baseline of the plannedcabletrack and make sure that the route does not cross other engineering networks. Determine the depth of the trench. The depth of the trench depends on the location of the route. For example,cablepassing under the road, must lie at a depth of at least 1.25 m.
Mark and clear the place of lodging track. Install fences along the entire route. Prepare the required amount of sand.
Dig a trench of the desired depth. Pour sand into the bottom of the trench. The thickness of the layer should be 15 cm.Liberally wet the sand with water and carefully tamp so that the thickness of the compacted layer is 10 cm. For tamping the sand layer it is recommended to use a vibrating plate.
Place asbestos-cement pipes in a prepared trench. Connect them using special couplings of suitable size. To do this, heat the sleeve in boiling water and put the sleeve on with a screwdriver.
Check carefullycableand make sure that its insulation was not broken during transport.
To install the cable, you must use a special steel cable. Wind the cable into the pipe so that it passes through the track and extends from the other side of it to a length of 10-15 meters.
Install special plastic funnels at the inlet and outlet of the pipes to protectcablefrom damage. Attachcableto the cable with a special metal stocking. Gently stretchcablefor previously laid cable.
Measure the insulation resistance of the laid cable. Ensure that the insulation is not damaged anywhere. Carefully fill the funnels previously installed with foam to prevent sand and stones from entering the pipes.
Fill the pipes with 15 cm of sand.Moisten and thoroughly tamp the sand layer. Cover the trench with soil to half. Lay a special signal tape. In the case of unauthorized excavations, the tape will indicate that the site is laidcable. Lay the primer up to the planned mark.
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