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. 

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.
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Littelfuse Shock-Block Class C and D GFCI

I recently taught a 2014 National Electrical Code (NEC) class at an industrial facility in Fort Wayne, Ind., where an attendee asked about special-purpose ground fault circuit interrupters (GFCIs) with trip levels above the normal 4­–6 milliampere (mA) trip threshold level.

There have been countless changes, both in the electrical industry and in the National Electrical Code (NEC), since the first edition in 1897. While a lot has changed, the reason and purpose of the Code have remained constant.

The term “qualified person” has a very broad meaning in a general context. From a simple standpoint, outside of the codes and standards world, it might mean having the qualities, accomplishments, etc., that fit a person for some function, office, or the like.

Electrical Contractor

More on Codes & Standards

 
Always Moving Forward

If you spend any amount of time in our industry, you are well aware that all codes and standards change, usually on a three-year timetable.

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Countertop Receptacles, Equipment Tightening Torque And More

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.
 Kitchen countertop receptacle height


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Hangar Stakes Are Higher

Many of the articles I write for ELECTRICAL CONTRACTOR originate as questions from people who read my columns or attend my workshops.

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Sizing Conductors, Part XLIV

Article 210 in the National Electrical Code (NEC) covers branch circuits, with the exception of circuits that supply motor loads only. Article 430 covers these branch circuits, and Part II covers motor-circuit conductors.

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Metal-Clad Healthcare

A reader wrote in that an inspector had turned down one of his projects, citing the installation was in violation of National Electrical Code (NEC) 517.13(A) and (B) because Type MC cable was installed in the patient-care areas.

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Angle Connectors, Temporary GFCIs And More

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.
 Pull-through angle connectors?


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Going Transformer-less

Some photovoltaic (PV) inverter manufacturers have designed and built transformer-less inverters to add to their existing line of transformer-type inverters for installation in the United States. Transformer-less inverters have been popular in Europe for quite some time.

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