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<br /> APRIL 2018 THE MAGAZINE OF ELECTRICAL DESIGN,<br /> ecmweb.com CONSTRUCTION AND MAINTENANCE<br /> The Human-Centric<br /> Lighting Debate<br /> No matter which side of the blue light fence you sit on, this<br /> new frontier has some designers taking a more enlightened<br /> approach to illumination. Read more on pg. 18<br /> IN THIS ISSUE<br /> Power Quality Issues That<br /> May Disturb LED Lighting pg. 10<br /> How to Ensure Safe<br /> Ceiling Work pg. C8<br /> Century-Old Contractors<br /> in the Spotlight pg. C14<br /> New Considerations in<br /> Emergency Lighting pg. 26<br /> Code Violations:<br /> A Droopy Disaster pg. 46<br /> Circle 1 on Reader Service Card or visit freeproductinfo.net/ecm<br /> univ8 Install with or<br /> TM<br /> LED T8 without a ballast.<br /> Visit us at Lightfair in Chicago!<br /> Booth #661<br /> Ballast. 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