NEMA SSL 4:2012

This standards publication applies to integral Light Emitting Diode (LED) lamps, which are defined as a lamp with LEDs, an integrated LED driver, and a base that meets appropriate American National Standards (ANSs) and is designed to connect to the branch circuit via a lampholder/socket that meets appropriate ANSs. The criteria herein apply to both integral LED lamps of non-standard form, and those intended to replace standard general service incandescent lamps, decorative (candelabra style) lamps, and reflector lamps. Other types of replacement lamps may be added in the future as improvements to LED technology make LED use in other replacement lamp types viable.