Butt connectors

[Michaelwgroves]

Sorry I should have been more specific, no the connection boxes.

 

[Midwest]

I can't see how these boxes can be MF as they do not have cable clamps.
But I like the New DRE-5 v2 DIN Rail Enclosure.

Which boxes?

 

[michaelw6]

i have put wagos into a metal enclosure mounted on a wooden plate clipped externally to blank gromit or compression gland. this meets all regulations and provides a maintenance free joint that can be accessed under a floor at a later date if needed. just make sure you identify all cables. future proofing the addition of works.