UL 482 Standard For Portable Sun/Heat Lamps

3.1 If a value for measurement is followed by a value in other units in parentheses, the second value may be only approximate. The first stated value is the requirement.

3.2 Unless indicated otherwise all voltage and current values mentioned in this standard are rootmean-square (rms).

4.1 Portable sunlamps are subject to the Radiation Control for Health and Safety Act of 1968, and the Federal Food, Drug and Cosmetic Act as amended by the Medical Device Amendments of 1976.

5.1 A sun/heat lamp shall be so formed and assembled that it will have the strength and rigidity necessary to resist the abuses to which it is likely to be subjected without increasing its risk of fire, electric shock, or personal injury due to total or partial collapse with resulting reduction of spacings, loosening or displacement of parts, or other serious defects.

5.2 A sun/heat lamp shall have an enclosure of metal or of non-combustible, non-absorptive insulating material such as glass, marble, phenolic composition or of a material determined to be acceptable for the application.

5.3 Among the factors taken into consideration when determining the acceptability of a nonmetallic enclosure are (1) the mechanical strength, (2) resistance to impact, (3) moisture-absorptive properties, (4) combustibility and resistance to ignition from electrical sources, (5) dielectric strength, insulation resistance and resistance to arc tracking and (6) resistance to distortion and creeping at temperatures to which the material may be subjected under conditions of intended or abnormal usage. The material is not to display a loss of these properties beyond the minimum acceptable level as a result of aging. See the requirements in the Standard for Polymeric Materials—Use in Electrical Equipment Evaluations, UL 746C.

5.4 The continuity of the grounding system shall not rely on the dimensional integrity of the nonmetallic material.

5.5 Electrical parts of a sun/heat lamp shall be so located or enclosed that protection against unintentional contact with uninsulated live parts, other than the contacts of a lampholder, is provided.

5.6 An opening in an enclosure that contains live or current-carrying parts shall prevent entrance of a 1-inch (25.4 mm) diameter rod and is acceptable if a probe as illustrated in Figure 5.1, inserted through the opening, cannot touch any uninsulated live part or coated-magnet wire that may cause an electric shock. The probe shall be applied in all possible articulated positions before, during and after insertion.