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July 21, 2011
Vol. IX, No. 14


   EC&M's CodeWatch
  Today's Headlines
 Granite State Adopts 2011 NEC
 The Natural State Moves Forward on 2011 NEC Adoption Plan
 What's Wrong Here?
 Code Q&A
 Code Quiz

Code News Update

According to a recent Code Alert issued on July 8 by the National Electrical Manufacturers Association (NEMA), the New Hampshire State Building Code Review Board recently voted to adopt the 2011 NEC with one amendment. The amendment relates to the identification of branch circuits [Section 210.5(C)]. It deletes the requirement to identify by phase each ungrounded conductor of a branch circuit, where the premises wiring system has branch circuits supplied from more than one nominal voltage system. The change was effective as of the first of this month.

As noted in a legal notice section of the website, the Arkansas Board of Electrical Examiners will hold a public hearing on Tuesday, August 16, 2011 at 1:00 p.m. in Room 315 of the Arkansas Department of Labor building, 10421 West Markham St., Little Rock, Ark. Public comments will be heard at this meeting with regard to adoption of the 2011 National Electrical Code. In addition, written comments will be accepted through 1:00 p.m. on Tuesday, August 16, 2011 at the above address.

Code Violations

What's Wrong Here?

By Joe Tedesco

Think you know how this installation violates the NEC?

Visit EC&M's website to see the answer.

Hint: Solid-type fuses

Code Quandaries

Code Q&A

By Mike Holt

Q. What is the Code requirement for bonding corrugated stainless steel tubing (CSST) gas piping systems?

Visit EC&M's website to see the answer.

Code Challenge

Code Quiz

By Steven Owen

As addressed in the 2011 edition of the NEC, what is the proper size conduit required to support a conduit body with a single entrance that is 1-in. trade size?

  1. A ¾-in. rigid metal conduit (RMC) supporting a conduit body by means of a 1 in. to ¾ in. reducing bushing connected to a threaded opening of 1-in. trade size.
  2. A 1-in. electrical metallic tubing (EMT) supporting a conduit body with a threaded opening of 1-in. trade size using the appropriate fittings
  3. A 1-in. intermediate metal conduit (IMC) supporting a conduit body with a 1-in. threaded opening, using the appropriate fittings.
  4. It is not permitted per the NEC to support a conduit body with a single opening by means of a conduit or tubing.

Visit EC&M's website for the answer and explanation.

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