Stand alone rcd

[comms]

Evening all,
Is it feasible to install a stand alone rcd to a ring main by removing ring from 32amp mcb at cu, extending both legs of ring(using crimps) by a few inches into rcd out terminals. Then using 6mm from the 32amp mcb at cu connect into rcd incomer terminals.
Unable to use rcbo (that would just be to easy wouldn't it) as the only rcbo contactum do is a double module, you've guessed it there are no spare ways on the cu.

 

[plugwash]

yeah nothing wrong with doing that

i guess the cables are burried so you can't just move them into the new box for the rcd

 

[comms]

Cheers plugwash.
Yes your right the cables are buried nothing is simple is it.

 

[kai]

Another way, is to run the ends of the existing circuit into two single sockets either side of the fusebox, then run 2.5.sq.mm. cable from each to the RCD output terminals, and then the 6.0.sq.mm. from the fusebox to the RCD input terminals. Join the earths with a din rail terminal connector.

The single sockets serve as joint boxes too, and there is no risk of accidentally plugging 26 amps into one end of the ring, with the overloading hazard, because the two singles are on separate ends of the ring circuit loop.

 

[plugwash]

Another way, is to run the ends of the existing circuit into two single sockets either side of the fusebox, then run 2.5.sq.mm. cable from each to the RCD output terminals, and then the 6.0.sq.mm. from the fusebox to the RCD input terminals. Join the earths with a din rail terminal connector.

from the way he is talking i think he has the cables coming out behind the CU (ie making it impossible to move them without pulling the service fuse removing the CU digging away plaster and then putting everything back together)