Code Quiz: Article 250, Part 11

Based on the 2008 NEC

Questions and answers written by Mark Lamendola, who has worked as a master electrician, electrical inspector, and design engineer. Mark is an IEEE Senior Member, and the Code article author for Codebookcity.com. He is a former editor of an electrical magazine were he edited Code articles.

1. The NEC specifies three materials that grounding electrode conductors can be made of. What are they?
    

2. In what locations can you not use aluminum or copper-clad aluminum grounding conductors?
    

3. The NEC uses specific language in describing how a grounding conductor must be attached to a surface on which it is carried. What is it?
    

4. Can you put a splice or joint in a grounding conductor?
    

5. If a service has multiple disconnecting means enclosures, you must connect a grounding electrode conductor between which two points?