07-05-2013, 12:20 PM
Those that are used as AC Line Filter. They can be any. Typically those across L and N are film and should be X-rated. Those that are across L and Chassis or N and Chassis are usually ceramic and should be Y-rated.
Rule of a thumb - Anything that touches L or N on one side and Chassis or anything user-touchable on another should be Y-rated.
Rule of a thumb - Anything that touches L or N on one side and Chassis or anything user-touchable on another should be Y-rated.