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UL153便携式灯具爬电距离及空气间隙要求可以参考Clause 24.
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/ @! W7 g$ K* {- `, g: h! \9 X24 Electrical Spacings1 P- i3 S3 z, P6 ?4 r& m
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24.1 The spacing between uninsulated live parts of opposite polarity,and between uninsulated live parts and metal that is capable of being grounded shall not be less than1/4inch(6.4mm)through air or 3/8inch(9.5mm)oversurface.The outer wrap of an open core and coil ballast is determined to be an uninsulated live part with respect to this requirement. |
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