shower doesnt trip

[topbanana]

had a leak in a shower in my house which has a modern consumer unit.
i turned the shower off at the switch in the bathroom ceiling, and was quite concerned that the shower rcb didnt trip as i had to take out the cable and from my past experiences they usually trip, when the different cables touch.
has anybody any thoughts please.

 

[Steve]

Yes, the MCB would trip if there was a dead short. However, you say there was a leak. Unless the shower unit was full of water and the electrics were drowned, there probably wouldn't have been a dead short. Most of the watery bits in a shower are at the bottom. Electrics at the top.

 

[Spark123]

Do you mean an RCD normally trips when you touch earth to any core? This won't happen if you have turned off your double pole isolator to the shower.

 

[Steve]

misread the post, and not sure if he means RCD or MCB.

 

[RMS]

either way, they wont trip without a short/imbalance of coils etc. Just because there was a leak in your shower does not necessarily mean your mcb or rcd will trip.

 

[topbanana]

meant rcbo, but probably mcb.
thanks sparky didnt think of the double pole isolator- that makes sense why it doesnt trip.
thanks for your patience all.

 

[RMS]

RCBO

"Residual current breaker with overcurrent protection"

this is basically an rcd and mcb combined.