Wiring devices

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 6. Electric lighting

Lighting fixtures and wiring devices. Wiring devices

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

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6.6.21. The requirements set out in paragraphs. 6.6.22 - 6.6.31, apply to devices (switches, switches and socket outlets) for rated current up to 16 A and voltage up to 250 V, as well as plug connections with protective contact for rated current up to 63 A and voltage up to 380 V .

6.6.22. Flush-mounted devices must be enclosed in boxes, special casings or placed in holes in reinforced concrete panels formed during the manufacture of panels at construction industry plants.

The use of combustible materials for the manufacture of covers covering the openings in the panels is not allowed.

6.6.23. Plug sockets installed in lockable warehouses containing combustible materials or materials in combustible packaging must have a degree of protection in accordance with the requirements of Ch. 7.4.

6.6.24. Plug sockets for portable electrical receivers with parts subject to protective earthing must be equipped with a protective contact for connecting the PE conductor. In this case, the design of the socket should exclude the possibility of using current-carrying contacts as contacts intended for protective grounding.

The connection between the earthing contacts of the plug and the socket must be established before the current-carrying contacts come into contact; the order of shutdown must be reversed.

Grounding contacts of socket-outlets and plugs must be electrically connected to their housings if they are made of conductive materials.

6.6.25. Plug connectors must be designed in such a way that they cannot be plugged into mains sockets with a higher rated voltage than the rated voltage of the plugs. The design of sockets and plugs should not allow the inclusion of only one pole of a two-pole plug, as well as one or two poles of a three-pole plug.

6.6.26. The design of the plugs of the plug connectors must exclude tension or breakage of the wires connected to them at the points of connection.

6.6.27. Switches and switches of portable electrical receivers should, as a rule, be installed on the electrical receivers themselves or in electrical wiring laid motionless. On moving wires it is allowed to install switches only of a special design intended for this purpose.

6.6.28. In three- or two-wire single-phase lines of networks with grounded neutral, single-pole switches can be used, which must be installed in the phase wire circuit, or two-pole ones, while the possibility of disconnecting one zero working conductor without disconnecting the phase one should be excluded.

6.6.29. In three- or two-wire group lines of networks with isolated neutral or without isolated neutral at voltages above 50 V, as well as in three- or two-wire two-phase group lines in a 220/127 V network with a grounded neutral in rooms with increased danger and especially dangerous, bipolar switches.

6.6.30. Plug sockets must be installed:

1. In industrial premises, as a rule, at a height of 0,8-1 m; when wiring from above, installation at a height of up to 1,5 m is allowed.

2. In administrative, office, laboratory, residential and other premises at a height convenient for connecting electrical appliances to them, depending on the purpose of the premises and interior design, but not higher than 1 m. It is allowed to install socket outlets in (on) specially adapted for skirting boards made of non-combustible materials.

3. In schools and children's institutions (in the premises for the stay of children) at a height of 1,8 m.

6.6.31. Switches for general lighting fixtures should be installed at a height of 0,8 to 1,7 m from the floor, and in schools, nurseries and kindergartens in rooms for children - at a height of 1,8 m from the floor. Installation of switches under a ceiling with control by means of a cord is allowed.

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

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