# of ground rods required at a residential detached storage building?

[MarkyMarkNC]

Instead of us having to prove it is 25 ohms or less, why doesn't the inspector have to prove it's not. If you go to an Emissions testing center, they have to provide the test equipment.:thumbsup:
No offense to you inspectors on here.

The NC Department of Insurance essentially has proven that. About seven or eight years ago, they tested over 100 different ground rods in every type of soil imaginable in nearly every county in North Carolina. Not a single one of them came close to being less than 25 ohms. Shortly after that, every jurisdiction in NC was instructed to enforce driving two ground rods.

 

[iwire]

There are exceptions to Article 250.32. Read your Nec 2011 book on page 232 & 233 and also refer to exhibit 250.18 where it shows an installation not requiring a GES and why it is not required. Some of these questions are not warranted if the Nec is consulted prior to asking the question. However, it appears that some don't have a Nec book in their possession and in my opinion it sure be a requirement tha t if the person is an electrician he should carry one. There is some confusion in the fact that some appear to shoot from the hip rather than consult the Nec before answering questions. However, there are some who give reference to Nec articles and those most times are quality answers. I also believe that Mike Holt should clarify the correct answer to these questions since it is his forum!

Richard, with all that and all you did was add your opinion to the others.

You mentioned some exceptions but really did not go into any details.


As far as the Handbook many of us have it, but the commentary in it is just more opinion and is not 'the code'

From the 2011 NECH

Interpretations of NFPA Documents
A statement, written or oral, that is not processed in accordance with Section 6 of the Regulations Governing
Committee Projects shall not be considered the official position of NFPA or any of its Committees and shall not be
considered to be, nor be relied upon as, a Formal Interpretation.