I think in this situation you need to make sure of one more parameter;
temperature rise. Keep in mind that the temperature curves are not the
actual temperature, its the temperature ABOVE AMBIENT. So, you may need
to be using a 10 or 20 degree curve, which requires a fatter trace.
My software says something more like 220-250 mils if the copper is on an
external layer. For internal, you would need much more. You made need to
run duplicate traces on different layers to get enough copper.

Good luck,    Jack

> -----Original Message-----
> From: IDKitty6 [SMTP:[log in to unmask]]
> Sent: Thursday, March 05, 1998 1:35 PM
> To:   [log in to unmask]
> Subject:      [DC] 1000V Test
>
> Hi,
>     I'm working on a board that will be running 23 amps of current
> thru a
> relay.  From the chart, I come up with a trace width of 150 mils using
> 2 oz.
> copper.  They will also be running this board thru a 1000V dielectric
> test.  I
> plan to use a conductor spacing of 120 to 150 mils.  Does this sound
> right?
> These traces are also being run to a connector with pin spacings of
> 140 mils.
> Do you think this will be able to avoid arcing?????
>      Need to know ASAP!
> Thank You So Much in advance for helping me.
>
> Kitty
>
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