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Thanks for all the replys. One last question... what is the difference between varistor voltage and maximum allowable voltage? For example the is another varistor in my circuit that has a varistor voltage of 270 l, but the maximum allowable vac is 175. The only difference between this one and...
So let me get this straight. My mov should be slightly higher than the rms? What confuses me is the fact that some posts state that on a 115-120vac circuit i should have a varistor whos working voltage should be 170. Im going crazy.
Im currently working on a inverter driverboard that got caught in a bad power surge. The fuse is rated at 8amp/125vac. The varistor is completely burnt up so i cannot identify it. Should i base the varistor on the fuse since they are in series? The varistor will go line to neutral.
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