Lightning Protection Ground Wells

[guggemos]

Power plant environment:
I've always provided a ground well at the base of a down conductor for a more direct path and strike disapation before connection to the plant grid. My new place of employment says they never heard of the requirement, never do it and have never been questioned by lacking this. I don't have access to NFPA 780 but I'm sure that it will support me. Could anybody give me some guidance on this scenario?

 

[tom baker]

What is a ground well?
(A place to pour electrons?)

 

[guggemos]

Lightning Protection Ground Wells

A ground well is a "Christie Box" or a meter box usually made of cast concrete like the type you might find around a water meter in a sidewalk (I'm a city kid). This is also called a test station in the grounding world. it is so you could have access to isolating the down conductor from the grid.

 

[Pierre C Belarge]

I have not worked in industrial locations, so I cannot say what required there. In other situations, I have not seen this requirement. I have 780, I will look to see if I can find it.