British General 900 Series 13A 2-Gang SP Switched Plug Socket White 5 Pack (48563)

Hi, thank you for your product enquiry. The decision between Single Pole or Double Pole switching is often a personal one, as both are considered safe. The difference is that SP only disconnects the Live carrier (leaving the Neutral carrier connected, which will allow dissipation of any stored energy if the device has done this) where DP disconnects both. In both cases Earth remains connected whilst the plug is in the socket for safety reasons.

Hi, thank you for your product enquiry. These sockets will fit any standard back box (surface or flush mount) which is at least 25mm deep as long as there is not an excess of wiring sharing the box. If there is a lot of extra wire in the box then a 32mm box would be advisable to prevent the socket being pushed away from the box by the wire behind it.