I have an old "Industrial Instruments, INC" capacitance decade box that gives me a capacitance range from .001uF to 1.11uF (model DK2A) and I was wondering if anybody would know what voltage this would be rated for. I took it apart but I didn't see any ratings on the caps inside, and I was wondering if I could use this to "tune" my primary supply for power factor correction. I don't want to hook it up to the 110V line and toast the caps if they can't take it.