On 16/02/2021 16:36, Chris Green wrote:
I have an old blanked off double socket box that I'd like to fit an
FCU into, is there any way to do this? It's a cemented in double
metal box so is pretty much immovable without destroying things
somewhat.


as others have said you can cope with that with a grid system but IIRC
not with the IP rating you were previously seeking.

--
Robin
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