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Monday, March 9, 2020
Question:
Comment on Code Question and Response for February 3, 2020:
Good Morning,
You may be mistaken with part of your answer for the concrete encased electrode question. For 4/0 cu or 250KCMIL al the minimum size grounding electrode conductor is # 4 cu or # 2 al (T250.66). Your final answer # 4 cu is correct (250.66B).
Thanks for the great service guys. Look forward to it every day.
Nom Feck
A
Answer:
Hi Norm, thanks for participating and for the comments. Yes, your point was covered in the response. Section 250.66(B) provides the information related to allowing a 4 AWG to serve as a grounding electrode conductor when it is connected to only the concrete encased electrode.