Sign Ballast

Sign ballasts are the engine of your sign. They are defined by the number of lamps supported and the specific range of lamp length which can be operated by the ballast. The part number of the ballast will note whether it can drive 1 or 2 lamps, 3 to 4 lamps and 4 to 6 lamps as well as a minimum and maximum length of the connected lamps. The operational range for length is generally from 4' to 48'. All of the lamp types used in these systems are T12 high output fluorescent.