Open wiring

Open wiring - wiring that is laid on the surface of walls, ceilings, on farms and other construction elements of buildings and constructions, to support and Mr T

General - open wiring inside the accommodation
The open pad exposed insulated wires should be re-konuvaty:
- Directly on the bases, on rollers, wards of cables and trays:
a) at a voltage above 42 V in areas without high risk and at a voltage to 42 V at all - which premises - at a height of not less than 2 m from the floor or grounds maintenance;
b) at a voltage above 42 V in areas of high risk and dangerous person - at a height of not less than 2.5 m from the floor or platform service.
These requirements do not apply to the slopes to switches, outlets, start-tive aids, shields, lamps that are mounted on the wall.
In industrial premises slopes unprotected wires to Off-chiv, sockets, devices, shields, and so p. should be protected from mechanical damage to a height of at least 1.5 m from the floor or platform-obslu hovuvannya.
In residential areas of industrial enterprises, residential and common buildings sous-specified slopes may not be protected from mechanical influences.
In areas accessible only to specially trained personnel can operate it, the height position laid open unprotected insulated wire is not standardized.
If unprotected insulated wires intersect with unprotected or protected insulated wires with a distance between the wires less than 10 mm, in places of crossing for each unprotected wire should be imposed additional insulation.
At the intersection with hot pipelines wires and cables must be pro-scheni from exposure to high temperatures or must have adequate performance. In places the passage of wires and cables through walls, floors or exits a need to provide the possibility of replacing wiring. This passage should be re-Conan in the pipe, duct, opening and Mr T In order to prevent penetration and accumulation of water and fire spread in places pass through walls, floors or exit out should seal the gaps between the wires, cables and pipes (duct, aperture and t on) and back-up tubes (ducts, openings and t on).
When laying exposed wires on insulating supports wires must be further isolated (eg pipe insulation) in the field passes through walls or ceilings