As reported earlier this week on this blog, the U.S. Department of Energy (DOE) revised its October 2013 report, Dimming LEDs with Phase-Cut Dimmers: The Specifier’s Process for Maximizing Success. The new report features recommendation of a National Electrical Manufacturers Association (NEMA) lighting standard, NEMA SSL 7A-2013 Phase Cut Dimming for Solid State Lighting: Basic Compatibility.
DOE’s report specifies that for wall-box installation, a NEMA SSL 7A-compliant dimmer be used with compliant LED (light-emitting diodes) sources. Pairing these products guarantees a level of compatibility and ensures the dimmer will not negate the dimming claims of the lamp or luminaire.
