Rcd not triping

[Wee wire]

Hi looking a little help. Replaced a consumer unit in a house with a contactum 8way dual rcd split board. After finishing it I tested with rcd tester at 1 time and 5 times with the rcd tripping in correct times. I went to connect up boiler after with the cable dead I cut it but the rcd would not trip. Then at the db I linked out the earth bar and neutral bar and neither rcd tripped to try and see if it would anyone any ideas?

 

[Wee wire]

Wat about when I linked out e an n bar

 

[Guitarist]

if its tripping in the correct times then theres nothing to worrie about, however RCDs should trip whe you cut through the cable even if its dead because its detecting a dead short between live and neutral

Really, please do as Tony says...

 

[alli]

If you cut the wire after a double pole fused spur the only cable connected back to the fuse board is the earth, therefore no fault will be seen by the RCD

Edit: Sorry , Sedgy34 beat me to it

 

[Richard]

What did the rest if your testing show? Were the results what you expected them to be? What was the earthing arrangment out of interest?

Rich

 

[Des 56]

Its a little disapointing to hear some silly responses in this thread

Especially since its not as if rcds and why and how they operate takes a rocket scientist to understand

 

[GLENNSPARK]

i think people get mixed up with "if the circuit is dead" and "if the RCD is dead"....if the circuit is dead..but the RCD is still energised....then it will still sense a N-E fault on the dead circuit.....but if the RCD is dead....then of course it wont sense any faults on the circuit/s it feeds.....

 

[Wee wire]

i think people get mixed up with "if the circuit is dead" and "if the RCD is dead"....if the circuit is dead..but the RCD is still energised....then it will still sense a N-E fault on the dead circuit.....but if the RCD is dead....then of course it wont sense any faults on the circuit/s it feeds.....

Is it a faulty rcd then if so why would the tester still give good tripping times