UL778中的绝缘材料厚度要求？
17.3.3 An insulated lining or barrier of vulcanized fiber or similar material used where a spacing wouldotherwise be less than the minimum shall not be less than 1/32 inch (0.8 mm) thick and shall be so located
or of such material that it will not be adversely affected by arcing.
Exception No. 1: Vulcanized fiber not less than 1/64 inch (0.4 mm) thick may be used in conjunction with
an air-spacing of not less than 50 percent of the minimum through-air spacing.
Exception No. 2: Insulating material thinner than that specified may be used if investigated and found to
be acceptable for the application.
UL778，17.3.3章节有提到绝缘材料厚度为0.8mm。是否相反极性间的绝缘材料厚度也按此要求，还是没有要求？
谢谢哦！
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