architrave switch: daft question

Because the switch will be 'on' in the 'off' position? (unless 2 way)

That was much first response, but Fred says 'patress box' not switch.

So no, I can't see any reason not to mount it the way he wants.

He's talking about the backbox, not the switch. You can fit the switch on the backbox either way up.

There's no obvious reason why the manufacturer elected to print "top" on the architrave patress. You can mount it either way up, unless Crebtree live in a strange universe where you can only mount the switch one way up relative to the patress.

Basically, if you can mount the switch either way (which I expect you can) then you can mount the patress either way.

I am not sure that you can on the Crabtree ones! Zoom in on the picture and look at the lug under the earth tag

I don't have one to check it with.

Unless you are fitting a retractive switch then it really does not matter as you will use a 2 way switch

Ah, well spotted. As you say though, with a two way switch and a one way circuit, the problem can be overcome by installing both the patress and the switch upside down.

Or an angle grinder on the lug!

Ah yes, could be.

Thanks for all the replies. I have mounted the box upside down. The lug is a bit of a red herring, it does not foul the switch, so it seems the switch can be fitted in either direction.

TBH I'm not sure which way up my switch is fitted, I didn't realise until today that they had an "up" and a "down".

I can understand the need to have a top on other switches (e.g. FCU or

I've also fitted a crabtree 3-gang light switch this afternoon. I carefully trimmed some of the wires longer than others, only to find that the switch had "top" marked onto it and I had trimmed the wires to suit it the other way around. I was going to ask does it matter if I install the switch upside down to save me re-doing the wires but from the answers given already, it seems I will be fine to do so, which I have done.

Thanks.

It saves numpties phoning them up to ask which way up the box goes!

Also some foreign parts reverse our convention for light switches