Issue #32
November 2016
Featured Manufacturer: Elliptipar
 
elliptipar

The best in class of asymmetric performance luminaires, Elliptipar® produces an even wash of light across any architectural surface, no matter how broad or tall. The same iconic reflector used for all traditional light sources now also serves as a superior heat sink for their even better asymmetric LED optics, including patented fraqtir™ technology.

Learn more about Elliptipar by visiting their website.
Win a _500 Shopping Spree

The holidays are quickly approaching. That means that holiday shopping is right around the corner as well. Let's face it...it's not cheap buying gifts for your friends and family. This month, The MH Companies and Elliptipar want to make sure you have a little something extra left in your wallet after the final gift is purchased, so one lucky winner will receive a $500 Visa gift card! So, what are you waiting for? Enter today, and you could be joining the list of previous monthly giveaway winners! Yes, people really do win! We have  photos  and  videos  to prove it!

Entry deadline is November 30, 2016!

Enter to Win!
Clint_s Corner
Each month, our Lighting Controls Department Manager, Clint Conley, offers insight and advice about lighting controls. Clint, a licensed professional electrical engineer, brings over 15 years of construction, engineering, and lighting controls experience to the table. He takes the often confusing topic of lighting controls, and presents information in a straightforward and concise manner.

This month, Clint is sharing an article on controlling emergency lighting, the codes involved, and how to design those systems. Here's what he has to say about the article:

Emergency egress lighting is required in commercial spaces to ensure the safe exit of building occupants under loss of normal power. In order to minimize energy consumption in a facility, these lights should be controlled in order to save energy when the building is not occupied or when the lights are not required for other reasons. The National Electrical Code requires that any controlled, code required egress light be equipped with automatic load control relay (see N.E.C. 700.2 and 700.25). These devices automatically override any lighting control to the emergency fixture and bring the fixture to full light output under loss of normal power (the emergency fixture is powered by an alternate, emergency power source).
 
The article referenced below is a great resource for these requirements, and for how to design these systems. It  does not cover applications where 0-10V dimming is required on the emergency lighting. Dimming mentioned in this article is standard two-wire dimming. Override of 0-10V dimmed fixtures is straightforward...the power conductors are overridden using a UL924 shunt device just as would be done with any switched fixture. Since 0-10V dimming operates with 10V (open circuit) causing the light to be completely on and 0V (short circuit) causing the light to be completely dimmed, all that is needed is a second relay to open the 0-10V dimming circuit. This can be accomplished using a second UL924 rated device, or a dual relay shunt device, such as Functional Devices ESRN which is UL 924 listed and shunts the line voltage and opens the 0-10V in a single device.

Quiz: Test Your Lighting IQ
 
Test Your Lighting IQHow bright are you when it comes to lighting trivia? Do you know how LEDs generate light? Do you know how much energy LEDs use compared to incandescent bulbs? What year was the first visible-spectrum LED invented? Test your knowledge with this fun quiz!


Happy Thanksgiving

Our offices will be closed on Thursday, November 24 and Friday, November 25. We wish you and your loved ones a very Happy Thanksgiving!
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