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Codes and Standards

 
Sizing Conductors, Part XXII
by
Charles R. Miller
| March 2013
| under
  • Codes & Standards

While selecting the correct size conductor is not difficult, more is involved than selecting a conductor based solely on the ampacity shown in Table 310.15(B)(16) in the National Electrical Code (NEC).

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The New Cycle Of Fire Protection

by
Thomas P. Hammerberg
| March 2013
| under
  • Codes & Standards

The beginning of 2013 is a good time to review what is happening with codes and standards that affect fire protection.

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Sizing Conductors, Part XXI

by
Charles R. Miller
| February 2013
| under
  • Codes & Standards

The rating of the overcurrent device must be considered when sizing a conductor.

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Is There A Difference?

by
Mark C. Ode
| February 2013
| under
  • Codes & Standards

In the 2005 National Electrical Code (NEC) process, proposals were submitted to change the phrase “equipment grounding conductor” to “equipment bonding conductor” wherever the phrase existed throughout the NEC.

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Guardian Of The Ground

by
Michael Johnston
| February 2013
| under
  • Codes & Standards

Grounding electrode conductors are essential in the grounding and bonding scheme for services and separately derived systems.

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Digger Derrick Exemption Granted for Subpart V Related Work
January 2013
| under
  • Your Business

OSHA issued a final standard updating the requirements for cranes and derricks.

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Using Two Cables For A 
Three-Way Switch, Mixing 
Plastic And Metal, And More

by
Charlie Trout
| January 2013
| under
  • Codes & Standards

If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to codefaqs@earthlink.net.

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Look, Listen And Comprehend

by
Wayne D. Moore

| January 2013
| under
  • Safety

Although the 2013 edition of the National Fire Alarm and Signaling Code contains 15 chapters and nine annexes, I find many contractors, designers and authorities having jurisdiction reference only one or two chapters when deciding what requirements will affect their fire alarm system design, install

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If It Ain’t Broke …

by
Mark C. Ode
| January 2013
| under
  • Codes & Standards

In the March 2012 Electrical Contractor, I mentioned the increased number of receptacles in patient bed locations with a minimum of 14 receptacles in a Category 1 critical-care area and 36 receptacles in a Category 1 operating room for the 2014 National Electrical Code (NEC), based on changes in the

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Cords For Temporary Wiring

by
Michael Johnston
| January 2013
| under
  • Codes & Standards

Recently, the question arose about using cords for temporary wiring. It was interesting to watch the reaction and response. It seems there are considerable inconsistencies relative to this subject.

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Staying High and Dry
by
James G. Stallcup
| December 2012
| under
  • Codes & Standards

How do you design, protect and locate a dry-type transformer of 600 volts (V) or less so that the installation will comply with the National Electrical Code (NEC)?

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Fire Alarm System Submission
by
Wayne D. Moore
| April 2012
| under
  • Codes & Standards

Recently, while attending a lunch-and-learn presentation from one of the better local distributors of fire alarm systems, we wound up discussing the quality of fire alarm system submissions from contractors.

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It's Almost Here: The 2012 NFPA 70E
by
Jim Phillips
| May 2011
| under
  • Codes & Standards

The 2012 NFPA 70E, The Standard for Electrical Safety in the Workplace, is nearing completion. This will be the ninth edition since it was first published in 1979.

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Side By Side: Equipment Grounding Conductors
by
Michael Johnston
| May 2011
| under
  • Safety

Many electrical designs incorporate parallel arrangements. The National Electrical Code (NEC) requires parallel conductors when supplying large switchboards and other large electrical equipment because large single conductors are not practical, economical or even available in many cases.

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Cracking Down on Codes
by
Craig DiLouie
| March 2011
| under
  • Lighting

A new national energy standard took effect on Dec. 30, 2010. On that day, all states had to certify to the U.S. Department of Energy (DOE) that they had a commercial building energy code in place at least as stringent as ASHRAE/IES 90.1 2004 or justify why they could not comply.

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News and Announcements

IDEAL Gives Away First of Four SignalTEK II Cable Qualifiers
ESFI Encourages "Electrical Safety for All Ages" During 2013 National Electric Safety Month
Milwaukee Receives 2012 Leader in Sustainability Award
Leviton Receives $1 Million Funding to Install Electric Vehicle Charging Stations throughout New York
Bridgeport Found in Contempt in On-going Legal Battle With Arlington
Southwire Circuit Wire Management System Eliminates Wire Spool Hassles
See all Announcements

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