UL 1993 PDF

1 Scope

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

1.2 These devices incorporate resistance, reactance, or electronic (solid-state) type ballasts or power supplies. These devices employ various lamp technologies including, but not limited to, incandescent, fluorescent, high-intensity discharge lamps, light-emitting diodes.

1.3 These requirements also include Supplemental Requirements for Light-Emitting Diodes (LED), Supplement SA, for:

1. a) Self-contained LED lamps, rated 120 to 347 V AC nominal for connection to screw-, pin-base, and recessed single contact (RSC or R7) lampholders,

2. b) Lamps for replacement of an ANSI standardized fluorescent lamp, and consisting of light-emitting-diode (LED) lamp technologies, with control circuitry, and a driver or power supply. The LED driver and control circuitry will be either integral with the lamp or remote from the lamp, and

3. c) Component LED lamps, with or without control circuitry, an ANSI base other than bases mentioned in (a), for connection to LED driver having a low voltage output, such as replacement for tungsten-halogen, MR11 and MR16 shaped lamps.

1.4 This standard does not apply to medium-to-medium base (E26) fittings that incorporate controls such as photocells, motion detectors, radio controls, or dimmers covered by other standards.

1.5 These devices are not intended for use with emergency exit fixtures or emergency exit lights.

1.6 Self-ballasted lamps that emit electromagnetic energy (light) outside the 400 – 700 nm range shall additionally comply with Supplement SE.

Summary of Topics

This revision of ANSI/UL 1993 dated March 26, 2021 includes the following changes in requirements:

– Copper-alloy screw bases and moist ammonia air stress cracking test option for copper alloys; 6.1.2, Table 6.0A, Table 8.1, 8.20 and Table 8.3

– Maximum conductive length of Edison screw bases; 6.1.5, 6.1.6, Table 6.0B, Figure 6.1 and 8.10A

– Evaluation of tack-soldered electrical connections; 6.2.2 and 8.21

– Drop impact test determination for severely damaged lamps; SA8.8.2, SA8.8.4, Figure SA8.0, Table SA10.1 and SA10.4.3

– Thickness of meal G5 and G13 lamp bases; 5.1.3, 6.1.7, and 6.1.7

– Lamps with movable joints; 5.5, Table 8.1, 8.22, 8.23 and Table 8.4

– Revision to Type A lamps – Revisions to HF test source; SC4.1.2, SC4.1.3 and SC4.1.4

– Additional requirements for evaluating LED lamps as direct replacements for specific high intensity discharge (HID) lamps; 2.1 and Supplement SD

– Type A/B tube lamp markings; SA10.4.4, SA10.2.8 and Table SA10.1

– Linear LED lamps; SA1.6, SA5.4.2, SA8.5.3, SA8.5.6, SA3.10A, SA6.14A, SA8.24 and SA8.5.5

– Temperature Test – LED Lamps; SA8.5.6 and SA8.5.7

– Addition of Supplement SE – Special Use Lamps; 1.6, Table 5.2, and Supplement SE

– New Test, Construction, and Marking requirements for LED Lamps with Integral Rechargeable Batteries; Supplement SF

– Miscellaneous editorial updates; 4.5.1.2, SA6.13.4, SA8.19.3