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
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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

 
Branch Circuits, Grounding, Flexible Metal Conduit, Motors, and Transformers
November 2000
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CODE CITATIONS Article 210—Branch Circuits; Article 220—Branch-Circuit, Feeder, and Service Calculations; Article 250—Grounding; Article 350—Flexible Metal Conduit; Article 410—Lighting Fixtures, Lampholders, Lamps, and Receptacles; Article 430—Motors, Motor Circuits, and Controllers; and

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Installing Electrical Equipment in a Combustible Dust Location
November 2000
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Article 502 in the National Electrical Code (NEC) covers the installation of electrical equipment in a combustible dust location.

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Safe Working Spaces around Electrical Equipment Allow Hasty Retreat
November 2000
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Over the past few months, we have discussed how good electrical design practice cannot and should not ignore the safety implications associated with the electrical installation.

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Is It Worth Removing the Exceptions?
November 2000
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Herewith, various 1999 National Electrical Code (NEC) issues that do not warrant a whole page of discussion. This is an example of why it is wrong to follow a “remove exceptions” edict without first examining the consequences. The 1996 NEC, Section 410-12 reads as follows:

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Article 370-Outlet, Device, Pull and Junction Boxes, Conduit Bodies, and Fittings
November 2000
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370-23(b)(2) Enclosures Mounted on Braces

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Section 384 Uncertainties Cleared Up
October 2000
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Since it first appeared in the 1953 National Electrical Code (NEC) as Sec. 3881 until the 1999 edition in Sec.

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Grounding and Bonding of Gas Piping
October 2000
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Judging by the responses to NECA’s online “Code Question of the Day (CQD),” gas piping and its use in bonding and grounding sure generated controversy and explosive comentary. The following questions and answers should clarify what many readers are asking.

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