Apr 8, 2010
193
12
93
South East Kent
Evening all,

Been to a job on Fri where the customer had a condition report completed. Two of the remedial identified was that there were too many spurs off spurs on the upstairs and downstairs circuit. There’s are separate circuits both rings which test okay etc. I looked at upstairs one first found the naughty spur off a spur and made it right by putting a fcu before the spurs. However the downstairs circuit there must be a junction box under a tiled floor. I can see where cable changes colour and have traced cable with wander lead but cannot see where that join is. I thought about splitting circuits into two separate radials on 20amp . However board is full. Customer does not want floors up etc at the moment (not particularly helpful either )but I do not want to leave this circuit on 32 amp so could change to a 20amp mcb just to protect cable.
Anyone got any suggestions
 
Last edited by a moderator:
Just leave it as an rfc, but reduce to 20A
If you can’t find the joint, and can’t lift the tiles, it’s one of the only solutions.

It will then be a radial with multiple branches, one of which comes back to the board.
 
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Reactions: pc1966
Are you saying there is an inaccessible joint under the tiled floor which goes off to feed a spur, and then there's a spur off that?
If so there may be another solution.
 
Without eyeballing every metre of the cable, there could be multiple branches hidden under the floor.

You might think you’ve got it solved, as then find another spurred spur, or a figure of eight.
 
  • Agree
Reactions: pc1966
then find another spurred spur, or a figure of eight.
If it looks to be abused RFCs due to DIY or builder, etc, take great care they are not cross-linked so two sets of OCPD feeding a rats nest!

If one is disconnected at the CU then you can check for IR to other RFC.

I think in ROI they are required to test for circuit-circuit isolation which is not a bad practice even if not mandated here.
 
Evening all,

Been to a job on Fri where the customer had a condition report completed. Two of the remedial identified was that there were too many spurs off spurs on the upstairs and downstairs circuit. There’s are separate circuits both rings which test okay etc. I looked at upstairs one first found the naughty spur off a spur and made it right by putting a fcu before the spurs. However the downstairs circuit there must be a junction box under a tiled floor. I can see where cable changes colour and have traced cable with wander lead but cannot see where that join is. I thought about splitting circuits into two separate radials on 20amp . However board is full. Customer does not want floors up etc at the moment (not particularly helpful either )but I do not want to leave this circuit on 32 amp so could change to a 20amp mcb just to protect cable.
Anyone got any suggestions
that wont make it right mate., putting the fcu before the spur that is
 

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To many spurs on ring circuit
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Rockomuir,
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