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- 10 Jan 2004
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Hi, I have been asked to replace 3 1G2W switches with these time delay pneumatic switches and having looked through the forum, I can't see that they have been discussed before. Basically, there are 2 ceiling pendants in a hallway and currently 3 1G2W switches to control them. Both the lights come on and off together. At the first switch there is T+E and 3 core+E, the second switch has 2 cables of 3 core+E and the final switch has 1 cable of 3 core+E. I assume that these pneumatic switches are 1 way only because they turn themselves off, so I will have to make this current wiring into a 1 way rather than 2 way circuit. So, do I say use the 3 core+E to wire up these pneumatic switches, but say not connect the yellow of the 3 cores. I will then be left with at the first switch 2 reds, 1 blue and 1 black. The second switch will have 2 blues and 2 reds and the final switch 1 blue and 1 red. Which I will wire as reds to common and blue+black to the 1 way terminal. I do hope this makes sense and that someone could point me in the right direction. Many thanks, Ben