Browse & Buy UL Standards
Standard 1993, Edition 5

Standard for Self-Ballasted Lamps and Lamp Adapters

UL Red Line
Standard 1993, Edition 5 Edition Date: May 10, 2017
Summary of Topics s1993_5_sum.html

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;, SA6.13.4, SA8.19.3

Back to Standard 1993, Edition 5

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.


You have one or more subscriptions that will expire soon.


You have one or more licenses to assign