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NEC Quiz: Article 225

by Mark Lamendola


Quiz Questions

Code Quiz: Article 225

Based on the 2005 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 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. What is the smallest size open individual conductors can be (outside branch circuits and feeders)?

  2. Open conductors of 600V or less shall be separated from open conductors of other circuits by at least how many inches?

  3. How many feed branch circuits can you supply to one building?

  4. Is the maximum number of disconnects for each supply to outside branch circuits and feeders different from the maximum allowed for services?

  5. If a feeder overcurrent device (again, outside branch circuits and feeders) is not readily accessible, what must be installed and where?


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