UL 496:2008 pdf download.Lampholders.
2.2 Actuating member - the part of a switch actuator that extends outside the body and is exposed tocontact by the user.
2.3Actuator - the part that drives a switch mechanism into action.
2.4 Adapter - a device that adapts one form or size of connecting means to another, and in somecases incorporates circuits or controls such as a dimmer or photo-control or a switch.
2.5 Base - that part of a lampholder that is used for mounting of the device.
2.6 Cap - a component of screw-type lampholders that is provided to supply a mounting means for thelampholder, enclose live or current-carrying parts, and/or prevent inadvertent accessibility to live parts.
Note: Internationally, the word “cap" is used in place of the North American term “base”to describe the meansof connection of the lamp to the lampholder.
2.7 Center contact - a contact used in a screw lampholder to engage the center contact of a lampbase.
2.8 Current tap - an adapter that is screwed into a base-supply lampholder and provides multipleoutlets of the lampholder or slotted receptacle type.
2.9 Damp location - an interior or exterior location that is normally or periodically subject to
condensation of moisture. Damp locations include partially protected locations under canopies, roofedopen porches, and similar locations.
2.10 Device screw base - a cylindrical component of a screw device having an external male threador form for engaging a corresponding lampholder.
2.11 Dry location - a location not normally subject to dampness. Dry locations include locations
subject to temporary dampness, as in the case of a building under construction, provided ventilation isadequate to reduce the likelihood of accumulation of moisture.
2.12Enclosure - that part or parts of a lampholder that:
a) renders inaccessible all or any parts of the equipment that may otherwise present a risk ofelectric shock, or
b) retards propagation of flame caused by electrical disturbances occurring within.2.13 General-use - suitable for direct installation in the field.
2.14 Holder, GU24 and GU24-1 - a holder with a twist and lock bi-pin configuration that is intended tosupply power to fluorescent and LED self-ballasted lamps and fluorescent lamp adapters with matingpin bases.This holder is not intended for use with incandescent lamps.
