NEMA published NEMA SSL 7A-2015 Phase-Cut Dimming for Solid State Lighting—Basic Compatibility. Standard provides compatibility requirements when forward phase-cut dimmer is combined with one or more dimmable LED light engines (LLEs). An LLE, for purposes of this document, comprises one or more LED modules, LED control gear (integral or remote), and connection to mains circuit. Revision eliminates category differentiation of Type 1 and Type 2 dimmers, and clarifies test condition language.