Just browsing the screwfix catalogue for a couple of light switches
and see they have something that looks identical to a single gang
light switch but they call it an intermediate switch? Just curious as
to what it is and where it's used?

In article , DIYdisaster
?@?.? writes
Just browsing the screwfix catalogue for a couple of light switches
and see they have something that looks identical to a single gang
light switch but they call it an intermediate switch? Just curious as
to what it is and where it's used?

Same as crossover switch identified he
http://www.wiki.diyfaq.org.uk/index...._Way_Switching

It extends the concept of 2 position switching to more than 2 positions
eg. Top of stairs, bottom of stairs to same + middle landing. Placed
(connected) between the end switch positions it can be extend the number
of switch positions indefinitely if required.
--
fred
Plusnet - I hope you like vanilla

DIYdisaster wrote in message
...
Just browsing the screwfix catalogue for a couple of light switches
and see they have something that looks identical to a single gang
light switch but they call it an intermediate switch? Just curious as
to what it is and where it's used?

Do you know how to wire a pair of 2 way switches (say)
at the top and bottom of the stairs?

You can put an intermediate half way up so the lights can
be controlled from all three switches.
You simply break the strapping wires and connect them to the
four terminals on the switch operating the switch simply
reverses the connections of the strappers making the "on"
condition "off" and vice versa.
--
Graham

%Profound_observation%

In an earlier contribution to this discussion,
DIYdisaster DIYdisaster wrote:

Just browsing the screwfix catalogue for a couple of light switches
and see they have something that looks identical to a single gang
light switch but they call it an intermediate switch? Just curious as
to what it is and where it's used?

It's used when you want 3 or more switches to be able independently to
switch a single light (or group of lights wired in parallel).

Two-way switching is straightforward, but if you want 3 or more ways you
need to insert one or more intermediate switches between the 2-way jobbies.
An intermediate switch simply swaps the two through connections and thus
toggles the light on and off.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

OK now I get it. Thanks for your replies.

DIYdisaster wrote:
OK now I get it. Thanks for your replies.

Damn cleaver these electrical chaps.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257

The Medway Handyman wrote:
DIYdisaster wrote:
OK now I get it. Thanks for your replies.

Damn cleaver these electrical chaps.


Sharp as a blade...

Roger Mills wrote:
It's used when you want 3 or more switches to be able independently to
switch a single light (or group of lights wired in parallel).
Two-way switching is straightforward, but if you want 3 or more ways you

c/ways/points/

3-way switching is where a switch has three selection options, eg
off, ignition, drive.

The confusion arises because two-point switching uses two-way
switches.
Three (and more) point switching uses two two-way switches and one
(or more) intermediate/crossover switches.

--
JGH

wrote:
JGH

Buggit, that was me. Previous owner left himself logged in.

--
JGH

In article ,
DIYdisaster wrote:
Just browsing the screwfix catalogue for a couple of light switches
and see they have something that looks identical to a single gang
light switch but they call it an intermediate switch? Just curious as
to what it is and where it's used?

Two way plus intermediate switching circuit.




L1 L1
0===========0 0===========0============= Line
| \ / |
C 0================================O C
\ / \ /
0===========0 0===========0============= Switch return
L2 Optional L2
Intermediate

--
*How about "never"? Is "never" good for you?

Dave Plowman London SW
To e-mail, change noise into sound.

"The Medway Handyman" wrote in message
. uk...
DIYdisaster wrote:
OK now I get it. Thanks for your replies.

Damn cleaver these electrical chaps.




FMAAYOR (follow my advice at your own risk)
IINAE (work it out for yourself)
--
Graham

%Profound_observation%

wrote in message
...
Roger Mills wrote:
It's used when you want 3 or more switches to be able independently to
switch a single light (or group of lights wired in parallel).
Two-way switching is straightforward, but if you want 3 or more ways you

c/ways/points/

3-way switching is where a switch has three selection options, eg
off, ignition, drive.

The confusion arises because two-point switching uses two-way
switches.
Three (and more) point switching uses two two-way switches and one
(or more) intermediate/crossover switches.

Also useful as a reversing switch for a dc motor etc.

--
Graham

%Profound_observation%