Homeowners Turn to Technology to Help Cut Energy Costs
May 1, 2009,
Recent study from the Consumer Electronics Association reveals an increasing consumer interest in the energy efficiency benefits of consumer electronics products...
The Basics of Instrument Transformers Part 1
May 1, 2009,
Understanding the potential transformer (PT), a conventional, single-phase transformer that has its primary and secondary windings on a common core...
Stop and Think
May 1, 2009, By Michael Eby, Editor-in-Chief
Why electrical engineers, contractors, and designers should stay on top of the latest research in electrical devices and equipment...
Strategic Maneuvers
May 1, 2009, By Beck Ireland, Staff Writer
EC&M magazine ranks the year’s biggest electrical design firms...
Engineers and Technical Professionals Continue to Source Products and Services
Apr 6, 2009,
According to the 2009 Economic Outlook Survey from Troy, N.Y.-based GlobalSpec, engineering, technical, and industrial professionals have felt the impact of the economic slowdown on their businesses...
New Yankee Stadium Is a Home Run
Apr 1, 2009, By Stefanie Kure, Senior Associate Editor
E-J Electric Installation uses Building Information Modeling (BIM) during pre-construction phase to complete complex lighting and power solutions on world-class ballpark renovation...
Using Single-Phase Transformers to Create 3-Phase Systems
Apr 1, 2009,
The basics of using delta-connected systems and wye-wye connected systems...
Module Behavior
Apr 1, 2009, By Beck Ireland, Staff Writer
Prolonging PV module life by improving inverter maintenance and manufacturing...
Maximizing VFD and UPS Performance
Apr 1, 2009, By Randy Barnett, American Trainco, Inc.
If you're installing a variable-frequency drive (VFD) or uninterruptible power supply (UPS) or if you already have this equipment in place you should...
AIA Forms Plan to Stimulate Economy, Create 1.6 Million Jobs in Building Sector
Mar 2, 2009,
Given the weakened state of the U.S. economy, it’s no surprise that the construction industry continues the struggle to keep its head above water....
Making the Transition from CAD to BIM
Mar 1, 2009, By James Bratton, Dynalectric — An EMCOR Co.
In today's fast-paced competitive construction market, it's no longer enough to execute a project in the real world of girders, sheet metal, pipe, and...
Power Factor, Capacitors, Harmonic Filters, and Resonance Part 2
Mar 1, 2009, By Tom Shaughnessy, PowerCET Corp.
Last month, we discussed low power factor and how resonance can disrupt facility operations. This month, we'll talk about harmonic filter design and various...
Barriers to BIM
Mar 1, 2009, By Beck Ireland, Staff Writer
The philosophy behind Building Information Modeling (BIM) is more than the sum of its technological capabilities. Proponents of BIM claim that beyond...
Electrical Services — Part 2
Mar 1, 2009, By Mike Holt, NEC Consultant
Looking at Fig. 230.1 in the NEC, we can see that the second and third major areas of Art. 230 provide requirements for service entrance conductors (Part...
Electrical Contractors Take Steps to Limit Subcontractor Liability
Mar 1, 2009,
It's no secret that many subcontractors have sustained their fair share of hard knocks in the last year as a result of the economic crisis and construction...
Understanding How Each State’s Interconnection Standards for Distributed Generation Installations Differ
Feb 1, 2009, By Beck Ireland, Staff Writer
Until recently, a major barrier to the widespread adoption of grid-connected cogeneration and small power production, otherwise known as distributed generation...
Power Factor, Capacitors, Harmonic Filters, and Resonance — Part 1
Feb 1, 2009, By Tom Shaughnessy, PowerCET Corp.
According to the IEEE Standard Dictionary of Electrical and Electronic Terms, power factor (PF) is defined as the ratio of the circuit power (watts) to...
Electrical Services — Part 1
Feb 1, 2009, By Mike Holt, NEC Consultant
If you look at Fig. 230.1 in the NEC, you'll see that Art. 230 divides neatly into three general of coverage. The first includes general requirements,...
Connecticut Magnet High School Teachers Students Hands-On Lessons in Sustainable Design
Feb 1, 2009, By Stefanie Kure, Senior Associate Editor
School is cool is a phrase you probably don't hear many teenagers espousing these days. However, students who attend classes at the Academy of Information...
The Hidden Costs of CFLs
Jan 1, 2009, By Beck Ireland, Staff Writer
Mandates in the Energy Independence and Security Act of 2007 call for lamps that use 25% to 30% less energy by 2014 and 70% less energy by 2020 ostensibly...
