- Reaction score
- 55
Had a really weird one this week.
Customer complaining about getting shocks from a power shower.
Inital investigations showed reaction from my volt stick from the shower hose! (All be it not full mains)
Took the lid off and the plumber who recently installed the shower had connected the neutral and earth the wrong way around!
Odd thing was that the power shower still worked..? Checked the fused spur in loft where power shower was fed from and seemed to be connected correctly (all be it very untidy). Not certain which circuit it was fed from but there was limited RCD protection for the house. (sockets only)
My question is:: Why didn't anything trip out!? how did the shower function with the CPC as the return path? Only thing I can think is that it using the common connection at the PME terminal but still doesn’t explain why it didn't trip the MCB at least... what do you guys think?
Customer complaining about getting shocks from a power shower.
Inital investigations showed reaction from my volt stick from the shower hose! (All be it not full mains)
Took the lid off and the plumber who recently installed the shower had connected the neutral and earth the wrong way around!
Odd thing was that the power shower still worked..? Checked the fused spur in loft where power shower was fed from and seemed to be connected correctly (all be it very untidy). Not certain which circuit it was fed from but there was limited RCD protection for the house. (sockets only)
My question is:: Why didn't anything trip out!? how did the shower function with the CPC as the return path? Only thing I can think is that it using the common connection at the PME terminal but still doesn’t explain why it didn't trip the MCB at least... what do you guys think?