Suggest 6mm creppage and clearance distance between protected and unprotected, 
and 0.4mm thickness thru insulation between protected and unprotected - these 
enable compliance with 3kvac test voltage.

Regards, Roger
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> Anyone have a suggestion for spacings (creepage distances) of traces 
> both inner and outer layers of a PC board for compliance with  
> ANY  domestic/international T1/E1 telco standard?  
>  
> I'm primarily concerned with each of the test setups and the 
> associated voltages for each test setup. 
>  
> In other words, we aren't using the creepage/clearance tables of say 
> UL-1950 3rd Ed. to determine the distances, or are we? 
>  
> Regards,  Doug 
>  
>  

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