UL 1993:2021 PDF Download

UL 1993:2021 standard covers devices rated 120 to 347 V AC nominal, including both self-ballasted lamps and self-ballasted lamp adapters. These devices are designed for connection to screw-base, pin-base, or recessed single contact (RSC or R7) lampholders and are intended for use in non-hazardous locations in accordance with the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code Part I, CSA C22.1, and the Instalaciones Eléctricas (utilización), NOM-001-SEDE.

The devices within this standard incorporate resistance, reactance, or electronic (solid-state) type ballasts or power supplies and can be used with various lamp technologies such as incandescent, fluorescent, high-intensity discharge lamps, and light-emitting diodes (LEDs).

The standard also includes Supplemental Requirements for LEDs (Supplement SA), which cover self-contained LED lamps rated for connection to different lampholders, replacement lamps for ANSI standardized fluorescent lamps, and component LED lamps for connection to LED drivers with a low voltage output.

It is important to note that this standard does not apply to medium-to-medium base (E26) fittings that incorporate controls like photocells, motion detectors, radio controls, or dimmers, as these are covered by other standards. Additionally, the devices covered by UL 1993:2021 standard are not intended for use with emergency exit fixtures or lights.

For self-ballasted lamps that emit electromagnetic energy (light) outside the 400 – 700 nm range, compliance with Supplement SE is required in addition to the requirements specified in this standard.