Hi All
Got a scenario here where a stairwell is lit on two levels and 2 way pneumatic time delay switches are used - the type where you push them in, and they slowly come back out:
http://www.screwfix.com/prods/19689/Electrical/Timers/Time-Delay-Pneumatic-Sw-Polycarbonate
The ground floor and first floor pair of switches cause the lower lights to illuminate, and (another) first floor and second floor pair of switches cause the upper lights to illuminate..
Talking about just one pair of switches (though both the lower and the upper pairs exhibit this problem):
Now, these switches have been wired up like conventional 2 way switches which I find very illogical, because you enter the building and push the lowest switch in, illuminating the lights. You then climb the stairs to the first level and reach another push switch, but pushing it in causes the lights to turn off, until the ground floor switch pops all the way out, at which point the lights illuminate again, until the first floor switch pops all the way out at which point the lights turn off.
I presume they have been wired in such a way that the bridging wire between the two switches connects L1 to L2 and vice versa, but I'm writing to ask if it's possible, without installing new wiring, to wire them up in the more logical way of: pushing either switch in illuminates the lights, and subsequently pushing the other switch in allows the lights to remain illuminated, for the duration of the longest switch delay.. i.e. both switches are set at 30 seconds, i push the first switch in, climb the stairs, 10 seconds later push the second switch in, the lights will remain illuminated for a total of 40 seconds
I think I need to get them operating in parallel 1 way mode, such that the common of each switch is live all the time, and then only L2 (or whichever is switched by pushing the mechanism in) is connected to the other L2 and onto the light bulb?
Thanks in advance
Got a scenario here where a stairwell is lit on two levels and 2 way pneumatic time delay switches are used - the type where you push them in, and they slowly come back out:
http://www.screwfix.com/prods/19689/Electrical/Timers/Time-Delay-Pneumatic-Sw-Polycarbonate
The ground floor and first floor pair of switches cause the lower lights to illuminate, and (another) first floor and second floor pair of switches cause the upper lights to illuminate..
Talking about just one pair of switches (though both the lower and the upper pairs exhibit this problem):
Now, these switches have been wired up like conventional 2 way switches which I find very illogical, because you enter the building and push the lowest switch in, illuminating the lights. You then climb the stairs to the first level and reach another push switch, but pushing it in causes the lights to turn off, until the ground floor switch pops all the way out, at which point the lights illuminate again, until the first floor switch pops all the way out at which point the lights turn off.
I presume they have been wired in such a way that the bridging wire between the two switches connects L1 to L2 and vice versa, but I'm writing to ask if it's possible, without installing new wiring, to wire them up in the more logical way of: pushing either switch in illuminates the lights, and subsequently pushing the other switch in allows the lights to remain illuminated, for the duration of the longest switch delay.. i.e. both switches are set at 30 seconds, i push the first switch in, climb the stairs, 10 seconds later push the second switch in, the lights will remain illuminated for a total of 40 seconds
I think I need to get them operating in parallel 1 way mode, such that the common of each switch is live all the time, and then only L2 (or whichever is switched by pushing the mechanism in) is connected to the other L2 and onto the light bulb?
Thanks in advance
