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. 

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.

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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More on Codes & Standards

 
Noteworthy Code Changes Concern Branch Circuits
by Staff |

Several changes in the 1999 National Electrical Code (NEC) in Article 210, Branch Circuits, are worthy of comment.

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Article 370 - Boxes, Conduit Bodies, and Fittings
by Staff |

370-23(d)(2) Enclosures Fastened to Support Wires

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Branch Circuits, Grounding, Flexible Metal Conduit, Motors, and Transformers
by Staff |

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
by Staff |

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
by Staff |

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?
by Staff |

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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