Try this page for creepage and clearance distances:
http://www.harkis.harting.com/WebHelp/EGds/WebHelp/GBgdsCreepage_and_clearance_distances.htmClearance is the size of the gap. Creepage is the distance of the path
around the cutout, in the case of conductive contaminant buildup.
mickeym
Dave Mucha wrote:
>Hi all,
>
>I'm looking to measure a 300 volt line and drop it to 5 volts. One
>of the many problems is that there is also the potential of a 15kV
>spike on the line.
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>I would appreciate any help finding parts that can withstand the high
>voltage. And any links to information on what to watch out for.
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>But, for this group. Does anyone have any ideas on how to determine
>the slices in a PCB around chips ? I would like to isolate the 15kV
>pulse from the rest of the board. A second board is a very good
>possibility.
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>VERY open to suggestions.
>
>Dave
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>Be sure to visit the group home and check for new Bookmarks and files:
>http://groups.yahoo.com/group/Homebrew_PCBs
>Yahoo! Groups Links
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