UL Standard for Safety Edison-Base Lampholders
|Publication Date:||30 October 1996|
These requirements cover Edison-base lampholders to be used in accordance with the National Electrical Code.
These requirements do not cover non-Edison-screw lampholders for special uses - such as projection lamps, electrode receptacles, and sign lamps.
These requirements do not cover seasonal-lighting lampholders which are covered by the Standard for Christmas-Tree and Decorative-Lighting Outfits, UL 588.
1.3 revised August 5, 1998
To differentiate between similar devices, an Edison-base lampholder to be mounted directly on an outlet box is considered to be a surface-type lampholder, whereas such a device requiring a cross-bar, mounting strap, or other mounting means is considered to be a fixture and is not covered by these requirements.
These requirements and the Standard for Attachment Plugs and Receptacles, UL 498, cover current taps having a lamp screw shell or screw base.
1.6 Deleted February 20, 2003