Lightning system/grounding system

[bunuelbresson]

Hi,

If the lightning protection system is connected to the ground system and it can't be disconnected. When you test the lightning protection system you are not really testing the resistivity of the lightning syetm, rather the whole ground/lightning system. The the least pass of resistance cannot be tested, or can it?

I mean if the specs ask for less than 1 ohm for the lightning protection system and I test it and get less than 1 ohm. The result is less than 1 ohm for the lightning protection + grounding system. The least pass of resistance might pass through the grounding system right? So the test is not showing me anything and it is just a waste of time right?

 

[infinity]

The test will show that the complete system has met your specified resistance of 1 ohm. Would the system then function as designed?

Welcome to the Forum.

 

[GoldDigger]

Hi,

If the lightning protection system is connected to the ground system and it can't be disconnected.

Even though the components cannot be disconnected, a clamp type ground electrode resistance measuring device might be able to isolate different parts of the system for current injection.