Quanta Services, Inc., Houston, through its operating unit PAR Electrical Contractors, has obtained approval to conduct live-line bare-hand work in California...More
The management of Ground Zero will not change hands. New York City officials decided not to hire San Francisco construction giant Bechtel Corp. to replace...More
The HANA Mark of Excellence Awards recognize the best in home automation products, systems, services and installations. The Awards program is co-sponsored...More
For rigid metal conduit see the new 2002 NEC, 344.42 Couplings and Connectors. Threadless. Threadless couplings and connectors used with rigid metal conduit...More
Many of us know that Thomas Alva Edison was the inventor of the incandescent lamp, phonograph and one of the earliest movie cameras. Some of us who studied...More
Security systems have long been an important residential technology, and home control has remained relatively popular since the 1980s. This article, the...More
Tragedy struck again in New York City following the collapse of a 14-story-high scaffolding structure at an office building at the end of October. At...More
Give the specific 1999 NEC references related to any violations you find. Write Joe a Violation Notice rather than sending in a copy of the Code rule....More
New in the 2002 NEC is Section 630.15 Grounding of Welder Secondary Circuit. The secondary circuit conductors of an arc welder, consisting of the electrode...More
New York City electrical contractors are still waiting to hear news about the future of the World Trade Center. Bob Mann, chairman of E-J Electric Installation...More
Terrain leveler attachment expands track trencher The T1055 Commander trencher now features a terrain leveler, which uses a large cutting drum that is...More
Guarantee Electrical Co. recently completed a massive electrical system renovation and additions at a 170,000-sq-ft TUMS factory in downtown St. Louis....More
Master Electrician Leonard O'Donovan turned to solar electricity to power his cabin rather than pay $50,000 to get on the grid. The president and owner...More
After a decade of steady and sometimes spectacular growth, the construction market will slow down through the early part of next year, according to economists...More
The business prospects for many segments of the electrical business may be sluggish at best for the foreseeable future. That's not the case with one potentially...More
This line of Knipex pliers has been redesigned with Knipex Comfort handles for a super-tight grip. Imported from Germany and now available in the U.S....More
This tree is obstructing the access to this electrical junction box. It was planted after the box was first installed. We can pick any rule we want where...More
Fire-retardant tape suits maintenance and wire harness applications For wire harness and electrical maintenance applications that require fire retardancy,...More
These two winners each wrote a detailed violation notice letter, which stated that three copper strands were missing. The 500 MCM CU-THW conductor is...More
If timing is everything in business as in life, electrical contractors are in the right spot at the right time to satisfy the growing demand for structured...More
This is the fourth and final installment in a series of articles summarizing about 220 significant changes in the 2002 NEC. This article focuses on the...More
Testing emergency-lighting generator batteries QOur two-story, 60,000-sq-ft office building has two diesel generators to back up the utility power to...More
ST. LOUIS Contractors can learn more about new profit opportunities in residential communications wiring with The Internet Home, a new magazine from Graybar....More
Electricians are scaling walls, balancing on roofs and spending long hours in their workshops to get their cities ready for the holiday season. In Kansas...More
LEDs have unique and compelling characteristics that make them ideal for industrial lighting applications. But there are a variety of misconceptions about LEDs, how well they work, how long they last, and more. Digital Lumens developed this whitepaper to dish up the facts around LEDs and address some common misunderstandings....More
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
Abstract: In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.
Abstract: This webinar will teach attendees the difference between risk and hazard, and how the choice of system grounding has a direct impact on reliability and safety.
Arlington’s new REVERSIBLE entrance plate not only protects cable but delivers good looks and installation versatility. Use it facing in or out. Non-rusting paintable plastic....More
