At 10:41 AM 8/7/96 -0600, R.D. Munger wrote:
>Does the IPC have any publications/charts regarding the minimum copper
>clearance spacing for various voltages? We have a 1500VAC copper trace and
>would like to know the minimum gap required from an ajoining copper land.
>
>
>Thank you.
>
>Dan Munger
>Fermilab
>Batavia, IL USA
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>
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Dan,
IPC-D-275, page 11, is a chart.  According to it, DC or AC Peak voltage
between conductors greater than 500 is .00012/Volt for external conductors
with permanent polymer coating.  There are other situations, too, so I would
suggest you get the document.

Ray Humphrey <[log in to unmask]>
DynaCad Design Services (503)642-4040


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