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January 20, 2011
Vol. IX, No. 2


   EC&M's CodeWatch
  Today's Headlines
 What's Wrong Here?
 Code Q&A
 Code Quiz
 Electric West Show Emphasizes NEC Education

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: Locker room antics

Code Quandaries

Code Q&A

By Mike Holt

Q. When can I use Table 310.15(B)(6)?

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 contain ____________ conductors [(230.44)], or conductors rated at more than _________ [(392.18(H)].

  1. branch circuit; 600V
  2. feeder; 35kV
  3. tray-rated; 2.4kV
  4. service entrance; 600V

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

Shows and Events

Scheduled for February 22-24 in Long Beach, Calif., Electric West offers attendees a rich educational program, including a dedicated track to “Code Changes & Standards.” Presented by some of the most well-known and respected names in the industry, a variety of Code-related seminars will get you up to speed on the 2011 changes as well as prepare you for how to apply these changes in the field. Following is a sampling of what you can choose from on the NEC front:

  • IAEI’s Analysis of 2011 Code Changes
  • NFPA 70E-2012 Electrical Safety Requirements
  • Understanding Important NEC Requirements
  • Latest Lighting Energy Code Updates: California Title 24 2008 – ASHRAE-IES 2010 – IECC 2009 Lighting
  • Common NEC Violations
  • Arc Flash Hazard Mitigation Methods: Benefits and Limitations
  • What’s Wrong Here – Ripped from the Pages of EC&M – Parts 1 and 2
  • Qualified Persons and Electrical Hazards
  • Ask the Experts
For more information and to register, visit

The new Fluke 381 does everything you would expect from a clamp meter, and then lets you remove the display for even more flexibility. Now one technician can do multiple jobs. Clamp the Fluke 381 around a conductor, remove the display and walk across the room to operate controls or remove protective equipment, all while watching real-time readings.


2011 Electroforecast
Notwithstanding recent lower-than-expected employment numbers and a mid-year stall in the housing market, the general U.S. economy has been showing some signs of recovery since the recession ended in June 2009. However, with its 12- to 24-month lag behind the general economy, non-residential construction is not expected to experience a substantial uptick in 2011. Read the complete 2011 EC&M Electroforecast.

Fully Updateable Electrical
Code Calculator
Electrical reference tool quickly and accurately solves electrical/wiring problems compliant with current or past NEC® codes. Use it every day to calculate wires sizes, voltage drop, conduit-sizing and more.
Advanced Digital Plan Measure
Makes it easy for you to get fast, accurate linear, area and volume takeoffs from blueprints, drawings and plans.
Click here.


Top Code Changes: 2011 NEC
EC&M has partnered with NEC expert Mike Holt to present a one-hour webinar covering the top 2011 NEC Code Changes. This event is available on demand here.


Cool Electronic Cabinets
EXAIR’s Cabinet Cooler® Systems stop electronic control downtime due to heat, dirt and moisture. They produce 20 degree Fahrenheit air from ordinary compressed air. Thermostat control minimizes air usage. Cabinet Coolers are UL Listed, CE compliant and maintain the NEMA 4, 4X and 12 rating of the enclosure. Visit the website for complete information, including application video.


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