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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.

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Considering Voltage Drop, Counting The Neutral And More 

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

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Sizing Conductors, Part XXIII 

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

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What’s On The Inside Counts 

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? 

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-Circuit, Feeder and Service Calculations, Part LXIII

Charles R. Miller

| May 2011

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Codes & Standards

Article 220 of the National Electrical Code (NEC) provides requirements for calculating branch-circuit, feeder and service loads and is divided into five parts. Part I provides general requirements for calculation methods. Part II covers requirements for branch-circuit load calculations.

Bonding Raceway, GFCI Nuisance Tripping and More

May 2011

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Codes & Standards

Changes That Are Good for You

Mark C. Ode

| May 2011

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Codes & Standards

For the 2011 National Electrical Code (NEC) process, Code-Making Panel 15 received many proposals recommending changes to Article 517. These proposals were intended to coordinate and correlate with changes to the 2010 NFPA 99 document.

Gentlemen, Protect Your Raceway

April 2011

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Codes & Standards

Section 300.4 in the National Electrical Code (NEC) provides requirements for protecting raceways, conductors and cables from physical damage with comprehensive details on various installations where damage could occur without the proper required protection techniques.

Branch-Circuit, Feeder and Service Calculations, Part LXII

Charles R. Miller

| April 2011

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Codes & Standards

Last month’s article concluded with calculation requirements for new restaurants in accordance with the optional method. This month, the discussion continues with calculating farm loads in accordance with Article 220 in the National Electrical Code (NEC).

Managing the Small Details

James G. Stallcup

| April 2011

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Codes & Standards

Small wind electric systems can have alternating current (AC) outputs, direct current (DC) outputs or both, including electrical energy storage, such as batteries.

Using Plumber’s Compound, Car Wash Coin Meter Boxes and More

Charlie Trout

| April 2011

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