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January 6, 2011
Vol. IX, No. 1


   EC&M's CodeWatch
  Today's Headlines
 Tentative Interim Amendment Issued for 2011 NEC
 What's Wrong Here?
 Code Q&A
 Code Quiz

Code News Update

The NFPA Standards Council issued a Tentative Interim Amendment (TIA) in reference to Section 680.42(B) of the 2011 NEC. TIA Log No. 1005 revises the text of 680.42(B) to read as follows:

"Bonding by metal-to-metal mounting on a common frame or base shall be permitted. The metal bands or hoops used to secure wooden staves shall not be required to be bonded as required in 680.26.

Exception No. 1: The metal bands or hoops used to secure wooden staves shall not be required to be bonded as required in 680.26.

Exception No. 2: A listed self-contained spa or hot tub that meets all of the following conditions shall not be required to have equipotential bonding of perimeter surfaces installed as required in 680.26(B)(2):
(1) Is installed in accordance with manufacturer’s instructions on or above grade.
(2) The vertical measurement from all permanent perimeter surfaces within 30 horizontal inches (76 cm) of the spa to the top rim of the spa is greater than 28 inches (71 cm).

Informational Note: For further information regarding the grounding and bonding requirements for self-contained spas and hot tubs, see ANSI/UL 1563 – 2009, Standard for Electric Spas, Equipment Assemblies, and Associated Equipment.

Click here to access the document as posted on the NFPA website and review the submitter's substantiation text and supporting documentation.

This TIA has a comment closing date of January 14, 2011. To submit a comment (on company letterhead), please identify the number of the TIA and forward to the Secretary, Standards Council, 1 Batterymarch Park, Quincy, MA 02169-7471.

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: Swiss cheese-style load center

Code Quandaries

Code Q&A

By Mike Holt

Q. When I add a GFCI-protected receptacle in an existing circuit that does not have an equipment grounding conductor, can I add additional grounding-type receptacles on the load side of it?

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

Code Challenge

Code Quiz

By Steven Owen

Fill in the blanks with the correct answers. New requirements for marking of cable trays apply when the cable trays installed within substations contain conductors _________. The warning notice shall be installed in a conspicuous position along the cable tray at intervals not to exceed ____ ft.

A. with 600V insulation; 20
B. cable tray rated; 50
C. rated higher than 600V; 10
D. rated higher than 35kV; 20

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

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