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.