UL 482:2020 pdf download

3.2 Unless indicated otherwise all voltage and current values mentioned in this Standard are root-mean-square (rms).

4 References

4.1 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.

CONSTRUCTION

5 General

5.1 Portable sun lamps are subject to the Radiation Control for Health and Safety Act of 1968, and theFederal Food, Drug and Cosmetic Act, as amended by the Safe Medical Act of 1990 and the MedicalDevice Amendments of 1992.

6Frame and Enclosure

6.1 A sun/heat lamp shall be so formed and assembled that it has the strength and rigidity necessary toresist the abuses to which it is likely to be subjected without increasing its risk of fire,electric shock, orinjury to persons due to total or partial collapse with resulting reduction of spacings，loosening ordisplacement of parts, or other serious defects.

6.2A sun/heat lamp shall have an enclosure of metal or of noncombustible,nonabsorptive insulatingmaterial such as glass, marble, phenolic composition, or of a material determined to be acceptable for theapplication.

6.3 Among the factors taken into consideration when determining the acceptability of a nonmetallicenclosure are:

a) The mechanical strength,b) Resistance to impact,

c) Moisture-absorptive properties,

d) Combustibility and resistance to ignition from electrical sources,

e) Dielectric strength, insulation resistance, and resistance to arc tracking, and

f) Resistance to distortion and creeping at temperatures to which the material may be subjectedunder 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 ofaging.See the requirements in the Standard for Polymeric Materials - Use in Electrical EquipmentEvaluations, UL 746C.