"John Aston" wrote in message
...

"Christian McArdle" wrote in message
. net...

As an example, my house has the following circuits installed into a 16
outgoing way Contactum CU. TN-S earthing, 100A DP switch incomer. (60A
cutout). RCBOs are double width, as they were the cheapest Type B RCBOs
I
could find.


Some single width RCBOs are single pole only. Would you recommend a RCBO
that disconnects the neutral as well?

there is no requirement
a standard CU has hard wired neutrals