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.
 Pull-through angle connectors?


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.

Article 430 of the National Electrical Code (NEC) covers motors, motor branch-circuit and feeder conductors, motor branch-circuit and feeder protection, motor-overload protection, motor-control circuits, motor controllers, and motor-control centers.

During a recent National Electrical Code (NEC) training program, inquiries about ground-fault protection of equipment (GFPE) were raised.

More on Codes & Standards

 
Call Before You Dig !!!
by Staff |

During the1999 National Electrical Code (NEC) cycle, Code-Making Panel 3 (CMP-3) accepted a revision to Section 300-5(d) that reads: “Service laterals that are not encased in concrete and that are buried 18 inches (457mm) or more below grade shall have their location identified by a warning ribbon t

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Section 384 Uncertainties Cleared Up
by Staff |

Since it first appeared in the 1953 National Electrical Code (NEC) as Sec. 3881 until the 1999 edition in Sec.

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Grounding and Bonding of Gas Piping
by Staff |

Judging by the responses to NECA’s online “Code Question of the Day (CQD),” gas piping and its use in bonding and grounding sure generated controversy and explosive comentary. The following questions and answers should clarify what many readers are asking.

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Branch Circuits, Lampholders, Motor Controllers, and More
by Staff |

CODE CITATIONS Article 210—Branch Circuits; Article 410—Lighting Fixtures, Lampholders, Lamps, Receptacles; Article 430—Motors, Motor Circuits, Controllers Motor branch circuit protection

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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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