UL 1472-2020 pdf free download.STANDARD FOR SAFETY Solid-State Dimming Controls. 4.1 4 A thermoplastic part shall conly with the mold stress-rel.eI test, Clause 512. 4.2 ActuatIng member 4.2.1 An actuating member shall have the strenti necessary to resist the abuses to which It Is likely to be subjected in Its intended use, and shall be seasely attached to the operairig mechanism that it e intended lo control. 4.22 An actuafing member of conductive material shall he rsutated from Irve parts 4.2.3 A dimmer provided with a field replaceable actuator assembly shall not permit contact to be made between the probe shoaci ii Flours 2 and any be pert when the aclua5x assembly is removed. Compliance is checked by inspection and W necessary, the field replaceable actuator assembly test Clause 515. 4.24 A dimmir providd with a field replaceable a.iWor asa.mbly that remawis operational (capabl. of switching the load on or dwngrng the llil outpiA) without the actuator assentey mstald. ihall also comply with the limited shoit-orcuit teat with th. actuator assembly removed See Clause 5.10.6. Exception: A dimmer ov,ded with cosmetic or decorative te actuator, such as a knob attached to the stem of a dimmer, or a decorative type actuator that when removed, renders (tie de’ivner Inoperable, is not required tocompty with the short cl,tult test with 1h coemef Ic or decorative actuator feature removed. 4.3 SpacIngs 4.3.1 The minimum Svouoft-alr and over-sur1ac spctngs maintained between wwnsulated live pails of oppoerto polarity, and between an uninsulated live part and a grounded or dead metal part, other than a metalic flush cover plate that is intended to be grounded or exposed to contact when the dimmer is mstalled in the intended manner, shall be as specthed m Table 4. Spacings are to be investigated with 12 AWG (3.3 mm2) wire axwiecled to the field wring terminals. Exception No. 1: Mien a p,*ited-wiring board is con*irmay coated with a maatfla4 that complies with the confomtal.coating teat reqtápments specified intL 746C and CSA C22.2 No 017. the spacings between uninsulated live parts oIos,te polarity on a pnnled.wwmg board may be less than specified in Table 4. Exception No. 2: Spacmgs between uninsulated Ase parts of opposite polarity on a pnnled-wirlng board may be less than speoited in Table 4. when The pwed-winng board oompkes t the clearances and ueepage requirements specified in UL 840 for overwd.age category 3 and; a) for pollution...
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