Hi Scott:


>   In the case of LPS, wouldn't the plastic enclosure still be considered 
> "decorative"
>   plastic "outside" a fire enclosure and required to meet HB flame class (per 
> UL
>   60950, 4.7.3.3)?

Yes.

Virtually all plastic materials meet the HB flame class,
hence my comment that he "may use any plastic."


Best regards,
Rich


>   Rich Nute wrote:
>   
>   > The choice is yours.  If your product is supplied by a
>   > Limited Power Source, then you may use any plastic for the
>   > enclosure.  If your product is not supplied by a Limited
>   > Power Source, then you must use V1 or better plastic for







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