National Electrical Code Articles and Information

Code Quiz: Article 250, Part 4

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. Since 1996, he has been writing National Electrical Code articles for electrical trade magazines and has an extensive portfolio of hundreds of NEC articles..

1. The grounding conductor of each service of a premises wiring system must connect to what?
    

2. Can one end of the grounding electrode conductor connection be made at any accessible point of the load end of the service drop or lateral conductor?
    

3. Should you connect a grounded conductor to the normally non-current carrying metal parts of equipment?
    

4. For a grounded system, an unspliced main bonding jumper connects two items to the grounded conductor within the service disconnect enclosure. What are those two items?
    

5. There are two exceptions to the rule in the previous question. What's one of those exceptions?