two way into one way switching

cpainter · Posted: Tue May 15, 2007 1:32 pm Post Subject: two way into one way switching

I have a room with a light controlled by two switches - one by each door. I want to take out one swithch and turn the other into a one way switch. each switch has a red into each L1 and L2 and a black into common. How do I do it please?

ColJack · Posted: Tue May 15, 2007 5:19 pm Post Subject:

not entirely sure that's right.... should be red and black into L1 and L2 respectively, with a single red into COM on both...

unless they are using singles or a twin red and a single black at each.. but why would they do that?

anyway.. the way it's wired you cannot "take out" a switch,
you can remove the switch and connect the COM and L1 of one switch in a terminal block, with the spare cable in a seperate connector block, and then blank off the switch, but the cables and box must remain..

unless you pull the cables back up / down into the ceiling / floor where you can connect them in a junction box as described, but this must remain accessible ( ie not under a laminate / tiled floor and with an access hatch over it )

cpainter · Posted: Tue May 15, 2007 5:37 pm Post Subject: Two way to One

OK can do that, but then want to wire-up remaining switch in a new single gang. Which of the three wires do I leave off?

ColJack · Posted: Tue May 15, 2007 8:54 pm Post Subject:

whichever one you didn't connect into the conector block...

( it's 2 reds, how am I supposed to define a difference between them? )

get a multimeter ( available for about £15 from the DIY sheds ), read the instructions for it, then continuity check from end to end...