These ballasts are voltage specific and must be operated on correct input voltage 120 or 240 volts Some ballasts operate on either 120 or 240 volts.
Electronic ballasts are protected from voltage surges by an external fuse system. This fuse is located under the input cord receptacle. Check this fuse first if the ballast does not function. Replacement fuses are included with the ballast.
BEFORE REPLACING ANY FUSE, ALWAYS MAKE SURE THE BALLAST IN FULLY UNPLUGGED.