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UL 891 minimum spacing using insulating barriers

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werd54

Mechanical
May 16, 2012
8
I am unable to meet the minimum required spacing between two bus bars of opposite polarity using UL 891. I plan to use heat shrink tubing to get around this.

8.1.17.2 A barrier that comprises the sole separation or that is used in conjunction with an air space less
than 0.33 mm ( 0.013 in) shall comply with (a) – (e).

Does this mean that if I meet the requirements of (a) – (e) all I need is 0.013 in of separation between the insulated bus bars?
 
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