Lighting control with multiple switches. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Lighting control with multiple switches. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Electric installation work

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Lighting control from several places, most often used on flights of stairs and long corridors.

Lighting control with multiple switches
Rice. 1. Lighting control scheme with several switches

Lighting control with multiple switches
Rice. 2. Appearance of the switch

The wiring diagram for lighting control from three sides consists of two-way switches SA1, SA3, which, when switched, switch the power supply from one controlled line to another.

An intermediate switch SA2 is installed between them; when switching, it changes the connection scheme of the controlled lines, without an electrical break.

Due to the switches SA1, SA3 having an electrical break, the intermediate switch, changing the connection scheme of the controlled lines (phasing, polarity) in one of the positions, turns on and off the EL1 lamp.

To control lighting from more than three sides, it is necessary to use an additional intermediate switch, the number of which depends on the places of control of the flight of stairs, the corridor (floors, offices).

Publication: electro.narod.ru

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