As my March 2007 column “At the Service Entrance” detailed, inspectors, manufacturers, contractors and electricians have long debated the installation orientation of panelboards and circuit breakers. Should a panelboard be installed in only a vertical position, or can it be installed horizontally?
Article 210 Branch Circuits; Article 310 Conductors for General Wiring; Article 404 Switches; Article 430 Motors, Motor Circuits, and Controllers; Article 695 Fire Pumps; Article 702 Optional Standby Systems; Chapter 9 Tables; The 2006 edition of the Guide Information for Electrical Equipment publis
Inspectors, manufacturers, contractors and electricians have debated the installation orientation of panelboards and circuit breakers for many years. Should a panelboard be installed only in a vertical position, or can it be installed horizontally?
According to the most recent data from the United States Fire Administration, home electrical problems are responsible for an estimated 67,800 fires every year, resulting in 485 deaths, 2,300 injuries and more than $868 million in residential property loss. The U.S.
Those of you tasked with selling fire detection and security systems for your company (and we are all in sales in one form or another) look for ways to set your company apart from the competition; most companies try to promote their strengths and benefits to an owner.
Article 200—Use and Identification of Grounded Conductors; Article 220—Branch-Circuit, Feeder and Service Calculations; Article 240—Overcurrent Protection; Article 310—Conductors for General Wiring; Article 314—Outlet, Device, Pull and Junction Boxes; Conduit Bodies; Fittings; and Handhole Enclosure
"NECA 100-2006, Standard for Symbols for Electrical Construction Drawings” has been revised and updated. This ANSI-approved standard describes graphic symbols used to represent electrical wiring and equipment on construction drawings.
There are some issues involving installations in the National Electrical Code (NEC) that regularly generate considerable misunderstanding for installers, inspectors and engineers; recently, I was giving a workshop on the changes in the 2005 NEC, and as I was covering the change in Section 230.40, Ex