25mm depth backbox not deep enough for faceplate

[NHW]

Currently have 25mm backboxes in the wall

But the faceplate that I have is one of those ones with the USB connector on so its abit deeper.

With the cables inside the backbox the faceplate won't fit on because when you push the faceplate on, it pushes the cables in (as per usual) but it just springs back because there isn't enough depth.

I've already got the faceplates (rookie mistake I know) so was just wondering if there was like something I can install behind the faceplate so that it just sticks it out abit more to give that extra depth required to ensure its not all just getting crammed in there.

Any advice appreciated. Thank you

 

[RandomGrinch]

Something like this?

Schneider Electric Lisse 2-Gang Spacer White - Screwfix

Order online at Screwfix.com. 2-gang spacer made from durable, high quality moulded urea with anti-microbial properties. Ideal for new construction and refurbishment projects. Concealed fixings. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

 

[NHW]

Ahhhhhh yes that looks like exactly something that I was thinking of. But the only thing is that it looks like where the faceplate actually goes in only brings it out like a few mm, as it seems its on 2 different levels. But yes exactly something like this. Does it make any difference if its for lightswitch vs a faceplate that you put sockets into? Thank you

 

[Adam_151]

Providing its not one of those completely flat accessories, then chances are, some careful dressing of the cables might help it go on. An annoyance, yes, but in a lot of cases take your time and its do-able
What make is the RCD accessory?

 

[pcaouolte]

The Schneider spacer linked to by RandomGrinch will gain you about 9mm so your 25mm back box effectively becomes 35mm which should be plenty. A possible problem is that the shape of the spacer at the corners might not match your faceplate which will still work but might look a bit unsightly depending on your level of fussiness.

 

[robinbanks]

In which case you can look to remove the back box from the wall, chisel the hole suitably deeper and then put the back box back