"Christian McArdle" wrote in message
et...
Some single width RCBOs are single pole only. Would you recommend a RCBO
that disconnects the neutral as well?

A DP is nice, as it can act as an isolator for the circuit. Particularly
useful for maintainance, or if a neutral-earth short has caused the trip
on
that circuit (will prevent other RCBOs tripping too). However, there is no
requirement, AIUI. After all, an MCB is single pole.

easy way to do this if short of space is to run
the circuit through ab RCD switch as found
in consumer units but mounted in a 2 width box
like this
http://tinyurl.com/23yzw