Electical Contractor

The National Electrical Code (NEC) contains an introduction, nine chapters and eight annexes. Article 90 is the introduction to the NEC. This article contains specifications that are essential to all chapters and sections in the Code.

A client requested that I inspect a generator installation that was determined to be the cause of a fire. The client’s concern was whether the installation identified as an optional standby system complied with the National Electrical Code (NEC).

An electrical contractor called me with questions pertaining to the terminating of the neutral and equipment-grounding conductor (EGC) at a sub-fed panelboard.

Article 200 Use and Identification of Grounded Conductors; Article 210 Branch Circuits; Article 430 Motors, Motor Circuits, and Controllers Laundry-room receptacles

Tamper-resistant receptacles will significantly reduce the number of injuries that result when someone inserts a foreign object into receptacles within a residential occupancy.

The National Fire Alarm Code does not require anyone to install a fire alarm system. That statement sometimes surprises contractors who have been told by a fire official to install a fire alarm system in accordance with NFPA 72.

Article 100—Definitions; Article 210—Branch Circuits; Article 250—Grounding and Bonding; Article 334—Nonmetallic-Sheathed Cable: Types NM, NMC, NMS; Article 422—Appliances; Article 680—Swimming Pools, Fountains, and Similar Installations; The 2007 Guide Information for Electrical Equipment Directory

Here’s the second part of a series reviewing the most popular questions that have appeared in NECA’s online Code Question of the Day and have generated the most comments from the subscribers.

There were 3,688 proposals for changes to the National Electrical Code (NEC) and 2,349 comments processed by the National Fire Protection Association (NFPA) staff at NFPA headquarters in Quincy, Mass. The following is part five in a series of significant changes for the 2008 NEC.