The standard does not say to extrapolate, but when we were in a similar
situation with a product several years ago, the UL engineer and his reviewer
agreed to use the extrapolation of the Creepage table. Always check with
your agency person, since we have also found that what was acceptable to
some, is not to others.

James Goedderz
Sensormatic



> ----------
> From:         John Woodgate[SMTP:[email protected]]
> Reply To:     John Woodgate
> Sent:         Monday, July 30, 2001 2:04 AM
> To:   [email protected]
> Subject:      Re: Creepage dist. for more than 1000V ?
> 
> 
> <000601c11881$36e04600$1e44d1d1@stella>, Vygovsky, Yury
> <[email protected]> inimitably wrote:
> >By interpolation the creepage for 1500v = 15mm or more, for 2000v=20mm or
> >more.
> 
> No, that would be extrapolation, and the standard doesn't say you can do
> that.
> -- 
> Regards, John Woodgate, OOO - Own Opinions Only.
> http://www.jmwa.demon.co.uk 
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