UL 496:2000 pdf download Edison-Base Lampholders
Scope
1.1 These requirements cover Edison-base lampholders to be used in accordance with the NationaElectrical Code.
1.2 These requirements do not cover non-Edison-screw lampholders for special uses – such asprojection lamps,electrode receptacles, and sign lamps.
1.3 These requirements do not cover seasonal-lighting lampholders which are covered by the Standardfor Christmas-Tree and Decorative-Lighting Outfits,UL 588.1.3 revised August 5,1998
1.4 To differentiate between similar devices, an Edison-base lampholder to be mounted directly on anoutlet box is considered to be a surface-type lampholder, whereas such a device requiring a cross-barmounting strap,or other mounting means is considered to be a fixture and is not covered by theserequirements.
1.5 These requirements and the Standard for Attachment Plugs and Receptacles, UL 498, cover currenttaps having a lamp screw shell or screw base.
1.6 A product that contains features, characteristics, components, materials, or systems new or differentfrom those covered by the reauirements in this standard, and that involves a risk of fire or of electric shockor injury to persons shall be evaluated using appropriate additional component and end-productrequirements to maintain the level of safety as originally anticipated by the intent of this standard. Aproduct whose features, characteristics, components. materials, or systems conflict with specificrequirements or provisions of this standard does not comply with this standard. Revision of requirementsshall be proposed and adopted in conformance with the methods employed for development, revision, andimplementation of this standard.
1.6 revised April 11,2000
2 Glossary
2.1 For the purposes of this Standard, the following definitions apply.
2.2 TERMINAL,INSULATION PIERCING (PIN-TYPE) – A terminal having a contact pin that puncturesthe conductor insulation and penetrates between the conductor strands. This does not include insulationdisplacement terminals where the conductor is positioned between the pins of the terminal.
2.3 LAMPHOLDER,SEASONAL LIGHTING – A lampholder that is restricted for use with Christmastree and decorative-lighting outfits and which by its construction and application is not suitable forgeneral use.
2.4 LAMPHOLDER,SKELETON-TYPE – An Edison-screw lampholder that does not use conductivescrew shell threads to make electrical contact with the lamp screw base. Electrical contact with the lampscrew base is made with one or more separate contacts in the side wall of the lamp cavity or a ringcontact in the bottom of the lamp cavity.
3 Components
3.1 Except as indicated in 3.2, a component of a product covered by this Standard shall comply with therequirements for that component.
3.2 A component need not comply with a specific requirement that:
a) lnvolves a feature or characteristic not needed in the application of the component in theproduct covered by this Standard, or
b) ls superseded by a requirement in this Standard.
3.3 A component shall be used in accordance with its recognized rating established for the intendedconditions of use.
3.4 Specific components are recognized as being incomplete in construction features or restricted inperformance capabilities. Such components are intended for use only under limited conditions, such ascertain temperatures not exceeding specified limits, and shall be used only under those specific conditionsfor which they have been recognized.
4 Units of Measurement
4.1 lf a value for measurement is followed by a value in other units in parentheses, the second value maybe only approximate. The first stated value is the requirement.
5 References
5.1 Any undated reference to a code or standard appearing in the requirements of this Standard shall beinterpreted as referring to the latest edition of that code or standard.
UL 496:2000 pdf download
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