eiXtra distributed by NEMA - The Newsletter of Electrical Equipment and Medical Imaging Manufacturers

November 18, 2013 | Vol. 22

feature story
Daylight Harvesting Technologies Embrace the Power of the Sun
by Brent Protzman, Lead Architectural Engineer at Lutron Electronics

The evolution of architectural lighting

Power of the sunDaylighting is a relatively new term for an ancient practice. In the millennia before the introduction of electricity, buildings had to rely on available daylight to illuminate interior spaces.

More recently, as electric lighting sources and technologies improved, daylight became almost passé. Evolving building codes, new energy regulations, and a renewed emphasis on sustainability lighting professionals to once again embrace daylight as a practical, aesthetic, and symbolic element of good building design.

The dynamic nature of daylight

The greatest challenge of using daylight as a primary light source is that it is dynamic, and somewhat unpredictable–there are seasonal and cyclical patterns, but daylight also changes from day-to-day, hour-to-hour, and even from one building façade to the next.

Automated shading solutions, digital dimming technologies, and daylight sensors can work together to compensate for these constant changes in daylight, minimizing the need for electric light by incorporating dynamic fenestration (automated shades, solar-adaptive software, and window sensors) into total light management systems.

One of the most powerful motivators to use daylight more effectively is code compliance. As of October 18, 2013, all state commercial building codes must meet or exceed ASHRAE 90.1-2010 standards that include mandatory requirements for daylight harvesting technology. Other building standards, including IECC and Title 24, are following suit by including similar daylighting requirements in their updated recommendations.

Read the full article.

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NEMA News

NEMA Announces 2014 Board of Governors
The National Electrical Manufacturers Association elected Christopher B. Curtis, President and CEO, North America, Schneider Electric, Chairman of the 2014 Board of Governors at its annual meeting in Palm Beach earlier this month.

NEMA President and CEO Urges Military to Implement Energy-Efficient Technologies
National Electrical Manufacturers Association President and CEO Evan R. Gaddis served as the moderator of the Defense Energy panel during the Defense Energy Summit November 11-13 in Austin, Texas. Attendees included experts from companies that manufacture lighting, microgrid components, and energy storage systems, and have experience in military installations and government contracting.

NEMA Endorses Industry Data Exchange Association (IDEA) as Sole Preferred Source for Member Company Product Data
During 2013, IDEA dramatically increased the volume of marketing data in its Industry Data Warehouse (IDW). The IDW now includes more than 325,000 products each with manufacturers’ specification sheets, attributes, images, and product descriptions.

Standardizations Trends

NEMA Publishes NEMA SG 11-2013 Guide for Handling and Maintenance of Alternating Current Outdoor High-Voltage Circuit Breakers
This document provides information on receiving, storage, handling, installation, inspection, and maintenance of alternating current outdoor high-voltage circuit breakers. NEMA SG 11-2013 may be downloaded at no cost on the NEMA website or purchased in hardcopy for $66.

NEMA Publishes Multiple Standards in NEMA TC Series: TC 3-2013, TC 6 & 8-2013, TC 18-2013
The National Electrical Manufacturers Association (NEMA) published NEMA TC 3-2013 Polyvinyl Chloride (PVC) Fittings for Use with Rigid PVC Conduit and Tubing, NEMA TC 6 & 8-2013 Polyvinyl Chloride (PVC) Plastic Utilities Duct for Underground Installations, and NEMA TC 18-2013 Packaging of Master Bundles for EPC-40 Polyvinyl Chloride (PVC) Conduit. Contents and scope of each standard may be viewed on the NEMA website.

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© 2013 National Electrical Manufacturers Association. eiXtra is a biweekly e-newsletter for electroindustry professionals summarizing key manufacturer, standardization, and regulatory news. NEMA does not sell or release subscriber's personal information and will never willfully disclose individually identifiable information to any third party without first receiving your permission. Privacy policy.