NEC and IEEE references Grounding Rods in triangular configuration

[saifshanshal77]

On a grounding restating rod system, what are the specific sections in the NEC (National Electrical Code) and IEEE standards that address the following:

1. The required distance between grounding rods when installed in a triangular configuration,
2. The recommended or required distance between the triangular grounding rod configuration and the generator sets (gensets).

I am looking for the exact NEC and IEEE references that govern these distances.

 

[ron]

I would guess the information about installation of the ground rods would be in Section 250.53 Grounding Electrode System Installation.
You will find it to be 6' apart minimum.

 

[infinity]

As Ron stated the NEC requires a minimum of 6' between rods but then give you an IN telling you that you would have a more effective GES if you doubled the length of the rod between them.

250.53(A)(2)Informational Note: The paralleling efficiency of rods is increased by spacing them twice the length of the longest rod.

 

[saifshanshal77]

I would guess the information about installation of the ground rods would be in Section 250.53 Grounding Electrode System Installation.
You will find it to be 6' apart minimum.

 

[saifshanshal77]

Thank you all

 

[jaggedben]

The NEC does not care about triangular formations. The 6ft rule applies regardless.

 

[ActionDave]

In chapter 1 verse 7 in the book of Terra in the Holy Book of Earthing it says "Thy must place thy ground rods into the Earth in form of the Isosceles Trinity lest thy structure and thy acreage on which it is built be cursed."