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Think you know how this installation violates the NEC?
Visit EC&M's website to see the answer.
Hint: Hairdresser turned electrician?
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Q. Can I install 120V conductors in the same space with 277V conductors? If the answer is yes, what restrictions apply?
Visit EC&M's website to see the answer.
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When are single-pole circuit breakers with identified handle ties permitted to be used for the protection of ungrounded conductors for line-to-line connected loads? - Never
- Only for multi-wire branch circuits
- For 3-wire direct-current circuits
- For line-to-line lighting loads
Visit EC&M's website for the answer and explanation.
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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 www.electricshow.com.
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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. www.fluke.com/innovation381
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WHITE PAPERS
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. |
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ON DEMAND MEDIA
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. |
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About This Newsletter
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