Lighting strike on property. high ZE and arking when testing.

[Strima]

I don’t follow mate. Your tests should be the same regardless of the issue that ‘may’ have effected it. Either the circuit is safe for continued use or it is not. What further testing would you do following a ligtning strike that you would not do as part of a standard PIR?

On a standard PIR I would hold short of lifting boards to inspect cables etc but in the case of a lightning strike it would be more pertinent to do so especially where known junction boxes are etc. as these would be more susceptible to damage.

 

[Nigel]

On a standard PIR I would hold short of lifting boards to inspect cables etc but in the case of a lightning strike it would be more pertinent to do so especially where known junction boxes are etc. as these would be more susceptible to damage.

I would not be ripping up flooring and floor boards if the cables tested fine. No way.

 

[Nigel]

I actually wouldn’t even if they never tested fine. I would note it on the report and code it.

Finding the fault is an extra after the report has been issued

 

[Strima]

Having dealt with a few sites that have suffered lightning strikes you will find cables that test out fine but have suffered thermal damage and need replacing, often these were within containment that you would not normally remove during a PIR.

If you are aware of the nature of damage in advance then would you not price your PIR accordingly?

 

[Nigel]

Having dealt with a few sites that have suffered lightning strikes you will find cables that test out fine but have suffered thermal damage and need replacing, often these were within containment that you would not normally remove during a PIR.

If you are aware of the nature of damage in advance then would you not price your PIR accordingly?

No. I would always price a report based on the schedule of tests detailed within BS7671 as those are the reports you will be issuing.

 

[Wilko]

I understand where you're coming from @essex, the test is the test is the test. However, I welcome any information from the installation manager about existing faults or issues.

 

[Nigel]

I understand where you're coming from @essex, the test is the test is the test. However, I welcome any information from the installation manager about existing faults or issues.

I do agree to a certain point. As in I want to know that x is not working in y place.

The amount of garden paths I have seen other people led up searching in areas because someone pointed them in a certain direction to no avail is silly.

 

[Jakegood]

I disagree, knowing what sort of damage can occur from a strike you can pay even more attention to that. Same as flood damage I would inspect all circuits however take a closer look at those circuits immediately effected by the flood.

I couldn’t agree more. Particularly in this case. I’m 95% certain it relates to the strike. I think it’s always best to get as much information out of the tenant or whoever about when and how the fault occurred etc. He may give you some clues e.g. lighting strike, flood damage. You would naturally pay more attention to this when commencing your tests

 

[oracle]

Having lived in a country when lightning was frequent during storms, I have seen sockets blown out of the walls, breakers destroyed, airial intake supply cables melted, etc. And the Regs give it a will of the wisp title transient voltages

 

[Baddegg]

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