Codes & Standards

 

Essential to the work of the electrical contractor is knowledge of the National Electrical Code, the National Electrical Installation Standards and additional standards and codes administered by the National Fire Protection Association, the Occupational Safety and Health Administration and others. Here is a list of all our articles on codes and standards listed chronologically by issue date. 

Comments
Considering Voltage Drop, Counting The Neutral And More

by
Charlie Trout
|
April 2013

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.

Code FAQs, National Electrical Code
Comments
Sizing Conductors, Part XXIII

by
Charles R. Miller
|
April 2013

Article 240 in the National Electrical Code (NEC) provides general requirements for overcurrent protection and overcurrent protective devices.

Code in Focus, National Electrical Code
Comments
What’s On The Inside Counts

by
Mark C. Ode
|
April 2013

Article 424 in the National Electrical Code (NEC) addresses fixed electric space heating equipment, stating, “for the purpose of the article, heating equipment shall include heating cable, unit heaters, boilers, central systems, or other approved fixed electric space-heating equipment.” Since the sc

Code Applications, National Electrical Code, Article 424
Comments
What Is A ‘Ufer’ Ground?

by
Michael Johnston
|
April 2013

At a recent seminar, one of the attendees asked, “What is a ‘Ufer’ ground?” This is a common question. A “Ufer” ground is slang for what the National Electrical Code (NEC) addresses as a concrete-encased grounding electrode.

Code Comments, National Electrical Code

More on Codes & Standards

 
Article 370—Outlet, Device, Pull and Junction Boxes, Conduit Bodies and Fittings, Part III
August 2000
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Box Fill Calculations, Part I, appearing in June’s issue, introduced box fill, with emphasis on Section 370-16(a). Notably, Table 370-16(a) is used to determine the maximum number of conductors (for sizes No. 18 through No. 6) permitted within common-size metal boxes.

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Defining Effective Grounding in Article 250
July 2000
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In the 1999 National Electrical Code (NEC), and particularly in Article 250, the words "effective" and "effectively" are frequently used in relation to grounding and bonding.

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To Ground or Not to Ground-That Is the Question
July 2000
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If there is one common thread throughout the electrical industry, it seems to be centered on grounding and bonding. Article 250 provides many of the requirements for grounding and bonding but is still difficult to understand.

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Outlet, Device, Pull and Junction Boxes, Conduit Bodies, and Fittings: Article 370-Box Fill Calculations, Part II
July 2000
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370-16(a) Box Volume Calculations

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CODE Q &A
July 2000
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CODE CITATIONS: Article 100-Definitions; Article 110-Requirements for Electrical Installations; Article 210-Branch Circuits; Article 220-Branch-Circuit, Feeder, and Service Calculations; Article 373-Cabinets, Cutout Boxes, and Meter Socket Enclosures; Article 400-Flexible Cords and Cables; Article 4

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CODE QUESTIONS AND ANSWERS
June 2000
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Article 100-Definitions; Article 110-Requirements for Electrical Installations; Article 230-Services; Article 240-Overcurrent Protection; Article 250-Grounding; Article 305-Temporary Wiring; Article 695-Fire Pumps.

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OVERCURRENT PROTECTION FOR MOTOR INSTALLATIONS: PART ONE
June 2000
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This month's column concerns overcurrent protection for conductors in motor and controller circuits and overload protection for motors, subjects that many subscribers to our "Code Question of the Day" online feature have inquired about.

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