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.

More on Codes & Standards

 
Sizing an Equipment Grounding Conductor for a Tap
by Staff |

Tapping a smaller conductor from a larger conductor is common in many electrical installations. Article 240 provides information on the minimum size of tap conductors for installations based upon the overcurrent protection device’s size and location.

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Designing by the Code
by Staff |

In July’s Code Corner, we discussed the location of motor/controller disconnecting means as required by Section 430-102.

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Derating Parallel Conductors
by Staff |

Few topics considered in NECA’s on-line “Code Question of the Day” have kindled more fiery disagreement than that of this month’s article.

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Grounded Conductor ID, Outside Branch Circuits and Feeders, Services, Lighting Fixtures, and More
by Staff |

CODE CITATIONS Article 200—Use and Indentification of Grounded Conductors; Article 225—Outside Branch Circuits and Feeders; Article 230—Services; Article 250—Grounding; Article 410—Lighting Fixtures, Lampholders, Lamps, and Receptacles;

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Splices and Conductor Fill in Enclosures and Wireways
by Staff |

The conductor fill requirements for a conduit or an outlet box are calculated in the field on a regular basis.

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NEC and OSHA Add to Confusion about GFCIs
by Staff |

Ground fault circuit interrupters (GFCIs) have been around since the early 60s, yet there is much confusion about their use and how they operate.

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