New Earth bonding - RCD now trips

[Newboy]

Installed a replacement shower pump.Electrical supply via a fused spur protected by RCD as the consumer unit. No earth bonds on the pump pipework so I installed earth clamps on the hot & cold pipework both on the supply side and the shower side of the pump so all four tails are now earth bonded to each other. The RCD protecting the ring main has now tripped 4 times in two days - not related to when the shower pump is running - any suggestions?

 

[andy]

Installed a replacement shower pump.Electrical supply via a fused spur protected by RCD as the consumer unit. No earth bonds on the pump pipework so I installed earth clamps on the hot & cold pipework both on the supply side and the shower side of the pump so all four tails are now earth bonded to each other. The RCD protecting the ring main has now tripped 4 times in two days - not related to when the shower pump is running - any suggestions?

obviously there is a fault somewhere. unless you have proper test equipment/knowledge, it might be a good idea to call someone who has

 

[Newboy]

My main concern is that the new earth bonding is leading to the trip - any suggestions.

I have installed quite a few pumps, on new installs I use a qualified sparks - unfortunately he is way for the next weeks or so.

 

[andy]

My main concern is that the new earth bonding is leading to the trip - any suggestions.

I have installed quite a few pumps, on new installs I use a qualified sparks - unfortunately he is way for the next weeks or so.

could be a fault with the pump leakin (most likely neutral since it trips when its not on) power to the pipework. unless you have an insulation tester, this could be hard to find

 

[Newboy]

Would a neutral leaking to earth occur randomly - ie 4 times over 2 days with nothing obvious triggering the trip?

 

[Big_Spark]

Would a neutral leaking to earth occur randomly - ie 4 times over 2 days with nothing obvious triggering the trip?

NO...you have a fault, call an electrician and stop risking your life and those of your family.

 

[Big_Spark]

My main concern is that the new earth bonding is leading to the trip - any suggestions.

I have installed quite a few pumps, on new installs I use a qualified sparks - unfortunately he is way for the next weeks or so.

could be a fault with the pump leakin (most likely neutral since it trips when its not on) power to the pipework. unless you have an insulation tester, this could be hard to find

Andy, spurs are double pole, so tripping when off is not going to be the pump unless the spur is permaanently on.

 

[plugwash]

modern ones are, some older ones i've seen most certainly are not.