Hamilton, Richard -4454 wrote:
>
> Chan Chi Man,
>
> I will assume that your assemblies have voltage above what UL specifies
> as Class II Circuitry. In other words, above 32VAC. You might see if the
> product can be designed so that all voltages on the board are below
> 32VAC, that way there is no concern for anything.
>
        Here I go again, no answers - just more questions....

        Does anyone have at hand what spacings should be when the vol-
        tage _does_ exceed 32VAC?  Is there a corrolary DC threshold
        (my addled mind recalls 40v)?  Where does one look for such a
        thin slice of a standard... ?

        Thanks and regards to all,
--

      Jeff Seeger                             Applied CAD Knowledge Inc
      Chief Technical Officer                      Tyngsboro, MA  01879
      jseeger "at" appliedcad "dot" com                    978 649 9800

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