You are correct Kurt. I read back through the CFRs and
for the life me can't figure out why I thought "mains"
was a critical word ...
Thanks ...
"Andrews, Kurt" wrote:
>
> Doug,
>
> >From my reading of 29 CFR 1910 I believe that it applies to all electrically
> powered equipment, not only mains powered.
>
> >From 1910.302(a) and (a)(1): Scope - Covered. The provisions of 1910.302
> through 1910.308 of this subpart cover electrical installations and
> utilization equipment (my italics) installed or used within or on buildings,
> structures, and other premises....
>
> And from 1910.399(a) Definitions applicable to 1910.302 through 1910.330:
> Utilization Equipment: Utilization equipment means equipment which utilizes
> electric energy for mechanical, chemical, heating, lighting, or similar
> useful purpose.
>
> Since it specifies that any equipment which uses electric energy is covered
> I have taken this to mean that it also includes 24 and 48 VDC powered
> equipment since it of course uses electric energy.
>
> We have had 48VDC powered ITE equipment Listed using UL 1950. The scope of
> 1950 specifies any mains powered or battery powered equipment with an input
> rating up to 600V. (There is no minimum voltage listed).
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