Light Switch Help Please

Marvo · Jun 14, 2024

I'm in the UK at the moment and I've already been roped into helping family out.

I've got 3 light switches to replace and I'm hoping maybe someone might have something very similar in a junk box in their shed and might be willing to swap them for a couple of beer tokens.

The switches are very old and I'm assuming none of them are available as new items.

[ElectriciansForums.net] Light Switch Help Please

littlespark · Jun 14, 2024

Yes… they are very old, and unlikely new switches will fit the old boxes.

I have a friend who likes this sort of thing, and I fitted out his house with new “old” switches… He sourced them online…. I think from here

Olivers Lighting

Olivers Lighting Company make traditional period light switches, wooden plug sockets and co-ordinating electrical accessories

www.oliverslighting.com

davesparks · Jun 14, 2024

The round one is surface mounted and can be replaced with a standard modern pattress and switch. That round type is non compliant these days as the front unscrews by hand giving direct access to live terminals.

The other two will probably be on cast iron back boxes, MK make an adaptor you can fix into the cast iron box to convert to the modern fixing hole pattern.
If they are on wooden back boxes then usually the only solution is to replace the back box.

Also be aware that if the wiring is equally old the insulation may be natural rubber which has disintegrated and disturbing it opens a very large can of worms.

Marvo · Jun 14, 2024

Thanks, you've kinda touched on my next question.

Are the backboxes going to be compatible with the switches available today? I was desparately hoping not to have to replace the backboxes. I also don't want to remove them to investigate because it's cotton wrapped VIR wiring so the less I disturb it the better.

The house belongs to my auntie who was my moms second cousin...or something like that. She's 102 years old and about an inch away from being bed ridden and she can't operate the new type lever switches so whatever I use has to be an old fashioned toggle type switch.

davesparks · Jun 14, 2024

You can get toggle switches similar to that in decorative metal finishes, obviously this assumes you have an earth available at those points.

westward10 · Jun 14, 2024

They can actually all be removed without the use of a tool assuming the toggle lock rings are free.

Marvo · Jun 14, 2024

Do the rings around the toggle switches just unscrew and the fascia plate falls off?

westward10 · Jun 14, 2024

Marvo said:
Do the rings around the toggle switches just unscrew and the fascia plate falls off?

They do indeed.

westward10 · Jun 14, 2024

The middle one is probably quite easy to undo, the bottom ones being brass maybe trickier. The top one should be easy with a bit of a tap.

westward10 · Jun 14, 2024

The rings on the bottom ones are knurled so a soft grip with pliers should do it, some had a keyway on two opposing points.

Marvo · Jun 14, 2024

I'm tempted to sub contract this out to someone who's got tools and a van full of parts. I thought it was an easy like for like replacement until I popped in today to have a look but I'm now worried I start this and the VIR disintegrates or there's another problem that means I can't complete the job and the light circuit can't be reenergised.

littlespark · Jun 15, 2024

Have a look at other parts of the installation. If the fuse board has been changed, then maybe it’s been rewired… or if other switches or ceiling roses have been changed already… there may not be any VIR left.

You’ll be able to take the plate or cover off the switch without disturbing the wires, just for a look first. The switch is fixed to the back box, cover screwed on top.

Whereabouts in Uk are you visiting? Maybe another forum member could assist??

Marvo · Jun 15, 2024

I'm heading back there on Monday to get some more war time stories and investigate further. I'll replace the entire surface mounted metal switch in the first photo and armed with new knowledge I'm going to try to remove the face plates on the other two. The house is in Denton which is about 5 miles East or South East of Manchester, I'm not sure if there's any forum sparkies in that area.

Dustydazzler · Jun 15, 2024

If the installatiion is all original, based on those switches the cable is going to somewhere between 50 and 100 years old?

I would not be touching those switches unless it was part of a full Re-Wire

littlespark · Jun 15, 2024

Dustydazzler said:
I would not be touching those switches unless it was part of a full Re-Wire

Honestly though... you can take the plates off without touching the actual switch, to examine the state of the wiring before anything else.

Your only issue is the round switch at the top.... the whole dome shape needs to be unscrewed from the base... and if its a bit stiff... a "gentle tap" could still smash it

Light Switch Help Please

Marvo

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littlespark

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Olivers Lighting

davesparks

Marvo

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davesparks

westward10

Marvo

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westward10

westward10

westward10

Marvo

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littlespark

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Marvo

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Dustydazzler

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littlespark

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