Grounding counterpoise

[HANY]

Does a grounding counterpoise need to be installed in a closed loop, or can it be linear or in a non-loop configuration? , as per NEC

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[winnie]

As far as I am aware the NEC doesn't use the term counterpoise.

I've heard this term in the context of radio antennas.

Perhaps provide more context to your question?

 

[HANY]

i mean the underground grounding network or system (composed of ground rods and bare copper connecting them)

 

[synchro]

Are you concerned with grounding systems for electrical transmission and distribution, or for buildings and structures?

 

[winnie]

Under the NEC, grounding electrodes and the jumpers connecting them do not need to be loops.

 

[HANY]

Are you concerned with grounding systems for electrical transmission and distribution, or for buildings and structures?

for an external steel sunshade

 

[LarryFine]

That's what we call a "design issue."

 

[R00LT1DE]

for an external steel sunshade

Aircraft maintenance? If so, it’s probably engineered to have lightning and static protection. As far as I remember, the counterpoise can be loop, radial, or combination of both. For sunshade, I would typically see loop configuration set around the sunshade perimeter with at least two wells for periodic inspection/testing.

 

[HANY]

That's what we call a "design issue."

Yup, did u have a recommendation; in another way did closing the loop have better performance in decreasing resistance or making any form of continuity

 

[HANY]

Aircraft maintenance? If so, it’s probably engineered to have lightning and static protection. As far as I remember, the counterpoise can be loop, radial, or combination of both. For sunshade, I would typically see loop configuration set around the sunshade perimeter with at least two wells for periodic inspection/testing.

No, it is just a normal material storage;; no lightning and static protection is needed ; just a grounding grid to decrease resistance,, my question here is did closing the loop have better performance in decreasing resistance or making any form of continuity

 

[electrofelon]

No, it is just a normal material storage;; no lightning and static protection is needed ; just a grounding grid to decrease resistance,, my question here is did closing the loop have better performance in decreasing resistance or making any form of continuity

I would not worry about the resistance. A grounding electrode system does not need any particular resistance level to do its job, and a lower value does not provide any benefit. I would install the minimum required amount of materials to meet the requirement.

 

[jim dungar]

No, it is just a normal material storage;; no lightning and static protection is needed ; just a grounding grid to decrease resistance,, my question here is did closing the loop have better performance in decreasing resistance or making any form of continuity

If you are really worried about the resistance, your rods should be at least as far apart as they are deep. Very few triad arrangements, i have seen, meet this requirement.

 

[R00LT1DE]

No, it is just a normal material storage;; no lightning and static protection is needed ; just a grounding grid to decrease resistance,, my question here is did closing the loop have better performance in decreasing resistance or making any form of continuity

I’m not too sure if closing the loop did any improvement. I mainly did installs and interconnect everything with cadwelds. Most of my systems were over engineered and required 5-10 ohms of resistance. We had fall of potential testers to make sure everything was meeting requirements but ultimately the contract stated that a third party had to test and certify the system.