How to use low and medium voltage cables ?

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How to use low and medium voltage cables ?

How are low and medium voltage cables buried in the ground?? What are the main steps of the burial process??

Electrical cables shall be buried at a depth of not less than 80 cm from the surface of the earth, in accordance with international standards, according to design steps that cannot be bypassed, as follows:

Steps :

– A hole is dug with a depth of not less than 80 cm and a width suitable for the number of cables to be buried.
A layer of about 10cm fine sand is placed to protect the cable.
The cable is stretched over fine sand.
– Another layer of fine sand is placed on top of the cable, and it is also about 10 cm deep.
Bricks are placed along the cable to protect the cable and also as a guide for those who try to dig later.
The hole is backfilled with ordinary soil that resulted from the excavation process, to a depth of 20 cm from the surface of the earth, then a yellow tape is placed along the cable as a warning to those who dig later.
The earth is backfilled until the hole is completely covered.

How to use low and medium voltage cables ?

Important note:

When there is more than one cable buried next to each other, separators are placed ready, or brick molds are placed, taking into account the distance between the cables.

If the cable is not armored, it is placed in a pipe, usually made of PVC, to protect it from mechanical stress

Also, when the cable crosses a motorway, it must be placed in a pipe to increase its mechanical protection (even if it is armored).

If there are any other types of cables buried in the ground, such as telephone or light current cables, the distance between them and the low or medium voltage cables should not be less than 30cm in order to protect them from interference resulting from the electric field from the voltage cable.

How to use low and medium voltage cables ?

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How to use low and medium voltage cables ?