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1shortcircuit
A client called to explain that the Water company have replaced a water main in the street and as a result the property earthing should be checked out.
Great, nice easy test to ensure that Ze is below specified figure for system... Mmmm, not so great? Turn up to find that the 16mm main earth from the consumer unit has been left to dangle for the last five years!
What I would like to establish here hopefully is WHAT is the best course of action?
I checked for Bonding to gas and Water and that is present in the form of 1 continuous 10mm cable not exceeding 3 metres.
The DNO have been informed and said that they can get someone out in about 2-3days after they have confirmed test results, something about if they just make the connection into the supply head the substation could blow up lol? They asked if I could do something temporary and I explained that I could but the client was not happy to relieve his wallet of said amount for the sake of a few more days considering it's been this way for 5 years already.
I couldn't test for Ze so I performed the same test but used the main earth terminal with all cpc's and bonding still connected and got a reading of 7.84 ohms, well above anything we would want but still indicating that earth was present probably in the form of the Gas/Water bonding?
What tests should I have performed??? How would you have handled this situation:thumbsup
I noticed an RCD present so I wanted to check it's operation. I plugged my tester into the downstairs ring and the RCD x1 and x5 test came back well within the specified 200ms and 40ms.
Any feedback is much appreciated.
Regards
1SC
Great, nice easy test to ensure that Ze is below specified figure for system... Mmmm, not so great? Turn up to find that the 16mm main earth from the consumer unit has been left to dangle for the last five years!
What I would like to establish here hopefully is WHAT is the best course of action?
I checked for Bonding to gas and Water and that is present in the form of 1 continuous 10mm cable not exceeding 3 metres.
The DNO have been informed and said that they can get someone out in about 2-3days after they have confirmed test results, something about if they just make the connection into the supply head the substation could blow up lol? They asked if I could do something temporary and I explained that I could but the client was not happy to relieve his wallet of said amount for the sake of a few more days considering it's been this way for 5 years already.
I couldn't test for Ze so I performed the same test but used the main earth terminal with all cpc's and bonding still connected and got a reading of 7.84 ohms, well above anything we would want but still indicating that earth was present probably in the form of the Gas/Water bonding?
What tests should I have performed??? How would you have handled this situation:thumbsup
I noticed an RCD present so I wanted to check it's operation. I plugged my tester into the downstairs ring and the RCD x1 and x5 test came back well within the specified 200ms and 40ms.
Any feedback is much appreciated.
Regards
1SC