shower doesnt trip

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16 Nov 2004
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Glamorgan
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United Kingdom
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.
 
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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.
 
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.
 
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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.
 
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.
 
RCBO

"Residual current breaker with overcurrent protection"

this is basically an rcd and mcb combined.
 

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