[Amps] LK500 various

R L Measures r at somis.org
Tue May 30 23:00:29 EDT 2006


On May 30, 2006, at 1:02 PM, Gudguyham at aol.com wrote:

> In a message dated 5/30/2006 1:19:21 P.M. Eastern Standard Time,  
> r at somis.org writes:
> As I see it, not requiring a MOV across NEC / UL approved switches  
> suggests that whoever wrote the present Code needs to take a course  
> in Reactance/Susceptance/Impedance/Admittance
> TRUE, BUT SWITCHES ARE MADE TO CONTAIN THE MOMENTARY ARC THAT OCCURS.

The problem is that the arc created by the reverse EMF during switch  
opening eats the contacts.

R L MEASURES, AG6K. 805-386-3734
r at somis.org





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