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. 

Without very specific National Electrical code (NEC) rules for determining the right size conductor and the correct size overcurrent protective device, a conductor could overheat and even start a fire.

This article is part 4 in a series that reviews some of the more significant revisions and new requirements in the next National Electrical Code (NEC).

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to codefaqs@gmail.com. Answers are based on the 2014 NEC.
 Panelboards in cabinets?


Electrical overcurrent protective system Coordination can be complex and daunting. It is best approached with knowledge of the basics and proper system design.

More on Codes & Standards

 
2008 National Electrical Code Revision Process Advances

The National Electrical Code Committee held two weeks of meetings last month in Redondo Beach, California; the purpose was to review and vote on nearly 2,500 public comments on proposals to revise the 2005 National Electrical Code (NEC).


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Change of Plans

The price of copper has been increasing at an incredible rate over the past few years; the reasons for the increase is not an issue that will be discussed here, but the resulting price escalation affects the electrical industry since many of the electrical conductors used in construction are copper


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Branch-Circuit, Feeder and Service Calculations, Part X

Maximum Loads: Last month’s Code in Focus concluded by covering loads for additions to existing installations; this month, the discussion continues with maximum loads as specified in 220.18.


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Twist-Lock Receptacles, Conductors and More

Included articles: Article 210—Branch Circuits; Article 230—Services; Article 250—Grounding and Bonding; Article 300—Wiring Methods; Article 310—Conductors for General Wiring; Article 314—Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosures; Article 320—Armored


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Danger: High Voltage

Applying caution to electrical inspection: I could not do my job as an inspector if I couldn’t open doors and covers of energized equipment; when I came aboard, they gave me a screwdriver and a flashlight and turned me loose.


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Getting Started in Security

Bill yourself as code-compliant and follow the rules: Electronic security systems forecasts show continued industry growth; In fact, some studies indicate this $16 billion market will grow at an annual rate approaching 7 percent.


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You Say Potato, I Say Tomato?

The International Electrotechnical Commission (IEC) documents use a totally different nomenclature to describe the electrical potential between phase conductors and earth than the National Electrical Code (NEC).


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