External wiring

II I-75. Unprotected insulated wires of external electrical wiring should be located or fenced in such a way that they are not accessible for touch from places where people may be frequently staying (for example, a balcony, a porch).

From the indicated places, these wires, laid openly along the walls,

should be at a distance of at least, m:

under the balcony, porch, as well as over the roof of an industrial building. ... 2.5

above the window. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0.5

under the balcony. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1.0

under the window (from the windowsill). ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1.0

When laid vertically to the window. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0.75

The same, but up to the balcony. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1.0

From the earth . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 2.75

When hanging wires on supports near buildings, the distance from wires to balconies and windows should be at least 1.5 m with the maximum deflection of the wires.

External electrical wiring on the roofs of residential, public buildings and entertainment enterprises is not allowed, with the exception of the entrance to buildings (enterprises) and branches to these inputs (see II-I-79).

Unprotected insulated outdoor wiring wires should be treated as bare when touched.

II-I-76. Distances from wires crossing fire passages and paths for transporting goods to the ground (road) surface in the carriageway must be at least 6 m, in the impassable part - at least 3.5 m.

II-I-77. The distances between the wires should be: with a span of up to 6 m - at least O, 1 m, with a span of more than 6 m - at least 0.15 m.

The distances from wires to walls and supporting structures must be at least 50 mm.

II-I-78. The laying of wires and cables for external electrical wiring in pipes, ducts and flexible metal sleeves must be carried out in accordance with the requirements given in II-I-63 - II-I-65, and in all cases - with a seal.

Laying wires on steel pipes and boxes in the ground outside buildings is not allowed.

II-I-79. It is recommended to enter the buildings through walls in insulating pipes so that water cannot accumulate in the passage and penetrate into the building.

The distance from the wires in front of the lead-in and the lead-in wires to the ground surface must be at least 2.75 m (see also II-4-37 and II-4-56).

The distance between the wires at the bushing insulators, as well as from the wires to the protruding parts of the building (roof overhangs, etc.) must be at least 0.2 m.

Entries can be made through roofs in steel pipes. In this case, the vertical distance from the branch wires to the input and from the input wires to the roof must be at least 2.5 m.

For buildings of small height (trade pavilions, kiosks, container-type buildings, mobile booths, vans, etc.), on the roofs of which people are excluded, the distance in the light from the branch wires to the input and from the input wires to the roof is allowed to be at least 0.5 m. In this case, the distance from the wires to the earth's surface must be at least 2.75 m.

PUE (Electrical Installation Rules)