MEM grid system question

[coopersim]

could anyone tell me what the module on the right hand side of the photo is?

i currently have a light switch on the left, then a fused connection for the bathroom lights and fan, but no switch to turn the fan on and off - it has a timer built in and is keeping me awake at night, is there a chance that i can change the far right secret switch / blanking plate (?) for a extract fan switch?

without removing the switch plate, is anyone able to hazard a guess as to why the electrician wired a secret (?) switch in to this arrangement, and what it is likely to be for?

 

[Adam_151]

Thats quite likely your fan isolator, rather than swapping it out, why not just buy a key for it?

 

[RF Lighting]

It might be that the key switch is an override for the fan, to turn off the permanant supply.


<edit> Bah!

 

[coopersim]

I thought as much, I did ring around a few places today, including CEF, they say they don't stock the keys for this, and said it wouldn't be worth their while getting them in!! Does anyone know where I could get one from? Or, even if I could fashion one out of a piece of ally with a pair of tin snips?

Thanks

 

[RF Lighting]

The MEM keys look like this:

 

[coopersim]

is that to scale?

 

[RF Lighting]

Yes, but I'm not sure which scale

 

[Lectrician]

Buy a key switch module - cost you a couple quid, but they have to give you a key with it - they get enough keys for one per switch.

If you struggle - I have a few in the bottom of my tool box..........

Would be better to swap the switch out though, and alter the wiring so the fan is completely seperate from the light.....many people are requesting it this way these days.

We are finding that humidistats are becoming very popular - siting them can be a problem as they are not suitably IP rated in many instances, due to the fact the steam needs to get into it!

 

[Belle427]

you can use a cable tie to activate the key switch,its quite easy!

 

[coopersim]

In terms of isolating the power to the extractor, would you say that my builder should have left me some of these keys? I have another two switches with the same arrangement, and not a sniff of a key anywhere !

I have tried the cable tie trick, the slot is so thin though that the strong cable tie won't fit, and the thinner one meets some resistance and won't budge the switch

 

[Steve]

knives are very thin managed to jimmy one with a knife once.

 

[RF Lighting]

and paper clips work well, but I can't reccomend you go sticking metal wire into electrical accesories.

 

[Steve]

and paper clips work well, but I can't reccomend you go sticking metal wire into electrical accesories.

IIRC, i found a paperclip too chubby - it went in, but wouldnt move up or down

 

[ricicle]

it went in, but wouldnt move up or down

Cue Secure.............

 

[RF Lighting]

and paper clips work well, but I can't reccomend you go sticking metal wire into electrical accesories.

IIRC, i found a paperclip too chubby - it went in, but wouldnt move up or down

You have to prod the top or bottom rather than sticking it in the middle and trying to wiggle it up or down.