In message 
<[email protected]>, dated 
Thu, 19 Oct 2006, McInturff Gary <[email protected]> writes
>More relevant, 3k vs 4.2K, heck I don't know. I'm just trying to find 
>the correct values. Again the test house gave me 4242 but the largest I 
>can see for reinforced insulation is from Table 5b for 60950-1 
>specifies the 3k test voltage for reinforced insulation and 1500 for 
>basic insulation - bot AC values.

4242 V is for DC testing; it is the peak value of a 3 kV r.m.s. sine 
wave.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Swine wave - a waveform whose spectrum is exceptionally difficult to calculate.
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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