reboldhack
Member
On a 4000 ampere electrical service, does the grounding electrode conductor need to be larger than the 3/0 (CU) conductor indicated in Table 250-66? If so, where is this referenced in the NEC?
Article 250-66 A/C System Ground
- Thread starter reboldhack
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- Bremerton, Washington
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- Master Electrician
Re: Article 250-66 A/C System Ground
What is the GEC attaching to for the grounding electrode?
It depends on the type of grounding electrode. the exceptions to table 250.66 are given in section 250.66
What is the GEC attaching to for the grounding electrode?
It depends on the type of grounding electrode. the exceptions to table 250.66 are given in section 250.66
- Location
- Illinois
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- retired electrician
Re: Article 250-66 A/C System Ground
3/0 is the maximum code required grounding electrode conductor no matter how large the service. The design documents will often require larger GECs, but the code does not.
Don
3/0 is the maximum code required grounding electrode conductor no matter how large the service. The design documents will often require larger GECs, but the code does not.
Don
ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: Article 250-66 A/C System Ground
600KCMIL main bonding jumper though
600KCMIL main bonding jumper though
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