The following changes in requirements are being proposed:
1. This proposed Third Edition of the Standard for Self-Ballasted Lamps and Lamp
Adapters, UL 1993, includes the following major changes from the previous edition: a)
Expansion of the scope to include range of products intended to be covered by the
standard; b) Added list of reference publications; c) Added and revised glossary
definitions; d) Added new section containing general requirements covering basic
assumptions and conventions; e) Relocated requirements for enclosures; f) Revised and
relocated requirements covering polymeric materials including a change in the
flammability requirement from V-1 to V-0; g) Revised and relocated requirements
covering weight, size, and moment; h) Expanded requirements covering lamp bases and
lampholders; i) Changes in requirements for printed circuit boards; j) Added
requirements covering LED driver circuitry; k) Relocated requirements for power
capacitors; l) Added requirements for lamp tests for fluorescent lamp light sources; m)
Revised requirements for spacing of electrical parts; n) Added new requirements for
accessibility of live parts; o) Added requirements for limits for LED light sources;
p) Added requirements for non-discharge lamps; q) Revised requirements for
environmental locations; r) Revised and relocated performance test requirements; s)
Added temperature test requirements for devices with input rating greater than 50 W; t)
Revised and relocated requirements for mold-stress relief conditioning; u) Added
requirements for a deflection test; v) Revised humidity conditioning requirements; w)
Added requirements for lamp fault conditions test; x) Added requirements for endof-
lamp-life test for fluorescent lamp adapters; y) Added requirements for end-of-lamplife
test for integrally self-ballasted fluorescent lamps; z) Added new section for test
apparatus; aa) Revised marking section in order to provide clarification of requirements;
ab) Miscellaneous editorial revisions such as relocating requirements throughout the
standard, correcting references, and editorial clarifications.