On 03/05/2021 14:53, Andrew wrote:
On 03/05/2021 14:45, newshound wrote:
On 03/05/2021 14:02, Andrew wrote:
On 03/05/2021 09:38, Jedzi wrote:

I've got an ancient, maybe 40 or 50 years old, switch for the
immersion heater in my airing cupboard.Â* It's a thin-ish one,
mounted on the wooden door frame.

Increasingly, it gets hot in use and has started to smell slightly
(I think it's a heated plastic type smell).

I want to replace it with a switch like this https://bit.ly/336ClVA
, mounted in a steel back box, on the wall next to it.Â* Am I allowed
to do that?


IT will look silly on a metal backbox, they are intended to be sunk
into the wall. Just use a single surface-mount pattress box like
this -

https://www.screwfix.com/p/mk-1-gang...ite-30mm/11340


Good point. Although a metal box designed for industrial installations
with conduit would be OK.

https://www.screwfix.com/p/mk-1-2-ga...clad-box/37530


Those boxes in ?incompatible with the switch that the OP was
asking about though. They are intended for industrial use.

I think you will find the outside dimensions as well as the corner radii
do match up, especially since this is an MK switch.