Instrument for Testing a Lightning Conductor

[slingshot2000]

Is it possible to test Lightning Conductor with an Earth Loop Impedance Tester ?

Discuss . . . . . . . . .. .

 

[GEOFF S]

Is it possible to test Lightning Conductor with an Earth Loop Impedance Tester ?

Discuss . . . . . . . . .. .

No, but im interseted in how you were thinking of connecting it up?

Cheers

 

[Darkwood]

Is it possible to test Lightning Conductor with an Earth Loop Impedance Tester ?

Discuss . . . . . . . . .. .

Nice to see you back Jon, been a while since you last posted (excluding today) :wacko:

 

[slingshot2000]

It's nice to post something and not have it deleted because it is a question regarding the new site sponsor !

Take that as you like .

Any views on lightning conductor testing will be greatly appreciated.

 

[slingshot2000]

No, but im interseted in how you were thinking of connecting it up?

Cheers

I suggested the discussion . . . .

 

[Hellmooth]

I would say very much so! But you'd have to know what was required from the testing procedure....

 

[Marvo]

Surely an earth resistance tester (the one with the long wires and the T spikes) would be better unless the area around the rod(s) is built up or paved.

 

[DuaneMHunt1976]

Test method 2. The wondering lead
I think one on the top of the rode and one at the incoming earth
This will give R and guess adding it to Ze.will give you a path to a transformer and low as possible like a Tt system

http://m.youtube.com/watch?v=i3qSYAW5Jcw

 

[slingshot2000]

Surely an earth resistance tester (the one with the long wires and the T spikes) would be better unless the area around the rod(s) is built up or paved.

This particular installation is a Church surrounded by a tarmacked car park.
Also, to prevent theft of he copper rod, the electrode is contained in a steel tube to a height of approximately 4M.

 

[slingshot2000]

I would say very much so! But you'd have to know what was required from the testing procedure....

To test that the earth electrode resistance to earth dose not exceed 10omhs.

 

[davesparks]

I have only had small involvement in lightning protection, but when I have the requirement was <10ohms to earth from any point on the installation/ <10 ohms from the highest point to earth.
Not an electrode resistance of <10 ohms to earth.

 

[slingshot2000]

I have only had small involvement in lightning protection, but when I have the requirement was <10ohms to earth from any point on the installation/ <10 ohms from the highest point to earth.
Not an electrode resistance of <10 ohms to earth.

That I why I asked for a discussion, there is so much conflicting information out there. I am currently trying to working my way through Megger's "Down to Earth", and thought a discussion may help.
I mentioned to an old hand what I was looking at and he told me remembered doing this with a loop tester.

 

[benji]

would have thought insurance company would want certification from lightning protection company

 

[Robson689]

If the building has a single lightning conductor the maximum reading of the rod should be below 10 ohms. We normally do a fall of potential test on a single earth if possible otherwise test off a "known earth" such as a street light or the earth on a plug socket in the building.

Should really be done by a lightning protection company though.

Megger DET3TC is what we use.

 

[davesparks]

That I why I asked for a discussion, there is so much conflicting information out there. I am currently trying to working my way through Megger's "Down to Earth", and thought a discussion may help.
I mentioned to an old hand what I was looking at and he told me remembered doing this with a loop tester.

You need to get a copy of the BS for lightning protection and test in accordance with that, not free help guides.