Can someone help please. I need to replace a hallway socket which is a
The switch has connections Common, L1, L2
I have wires coloured:
Blue (with brown sleeve)
Which wires go in which connectors?
In the US that is called a 3-way, even though it only goes 2 ways.
I hope it's the same in England. We don't need another "billion"
What I would do is look at the old switch and look at the new switch
and decide which connectors correspond. There is usually one
connector on one side, and two on the other, for some definition of
"side". They might be embossed (or whatever the opposite is) in the
Between the two that are on one side, it doesn't matter which is
which, unless you want both switches to be up when it the light is on
(or off), or one to be up and the other to be down. If you don't get
it the way you want, you have to interchange these two wires.
If you mix up the single wire with one of the two wires, I don't think
anything bad can happen. When I bought my house, one hall switch was
like that, so I could only turn the light off if it was already on via
the other switch. I couldn't turn it on if it was off at the other
switch. I had to draw a diagram to figure out which wires were
reversed, and after that, I reversed the wires.
I'm pretty sure the worst you can do is have the switch not work quite
right. If anyone believes you can blow a fuse, let us know.
Not quite. It's called a "3 way" because there are three terminals on
the switch. The "4 way" switch, which has four terminals, can be added
to as many more locations as you want to control the light from. I'd
draw an ascii-art diagram, but I'm sure there are many better diagrams
out on the web (YCGI).
"Trust me, there is NO way to nonchalantly conceal the fact that you have a
power tool in your head, no matter what you do." -- El Gato
Yes. That includes 3. It isn't possible to say EVERYTHING in a short
I know how they're connected. A 4-way switch is effectively a DPDT
switch with the opposite terminals internally connected. This
arrangement reverses the connections between 2 wires.
BTW, the first time I say such a switch it was being used to reverse
the direction of a small DC motor. I learned something from the toy
lunar rover I got for my 11th birthday.
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