Laying cable lines in industrial premises

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 2. Sewerage of electricity

Cable lines up to 220 kV. Laying cable lines in industrial premises

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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2.3.134. When laying cable lines in industrial premises, the following requirements must be met:

1. Cables must be accessible for repair, and openly laid cables for inspection.

Cables (including armored ones) located in places where mechanisms, equipment, cargo and transport are moved must be protected from damage in accordance with the requirements given in 2.3.15.

2. The clear distance between the cables must correspond to that given in Table. 2.3.1.

3. The distance between parallel power cables and all kinds of pipelines, as a rule, must be at least 0,5 m, and between gas pipelines and pipelines with flammable liquids - at least 1 m. At shorter distances of approach and at intersections, the cables must be protected from mechanical damage (metal pipes, casings, etc.) throughout the approach area plus 0,5 m on each side, and, if necessary, are protected from overheating.

Cable crossings of passages must be carried out at a height of at least 1,8 m from the floor.

Parallel laying of cables above and below oil pipelines and pipelines with flammable liquid in a vertical plane is not allowed.

2.3.135. Laying cables in the floor and interfloor ceilings should be carried out in channels or pipes; sealing cables tightly in them is not allowed. The passage of cables through ceilings and internal walls can be made in pipes or openings; after laying the cables, the gaps in the pipes and openings must be sealed with an easily pierced non-combustible material.

Laying cables in ventilation ducts is prohibited. It is allowed to cross these channels with single cables enclosed in steel pipes.

Open cable laying in stairwells is not allowed.

See other articles Section Rules for the installation of electrical installations (PUE).

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