Sylvania T8 Fluorescent Ballast - 120-277V AC | Instant Start

The Sylvania T8 Fluorescent Ballast, model QHE4x32T8/UNV ISL-SC (49867), is the component described here. This model is a replacement ballast for the matching fluorescent lamp circuit. Select it from the lamp schedule inside the existing fixture. The listed lamp configuration is 4 X F32T8, which should be checked as a complete lamp-and-count combination. The instant start starting arrangement is part of the compatibility check for the installed lamp circuit. The listed ballast factor is 0.78, which is relevant when comparing the output of the same lamps on different compatible ballasts.

Use the 120-277V AC version only where the supply and control arrangement suit its electrical specification. For the ballast compartment layout, allow for the listed length 9.50 in., width 1.30 in., height 1.00 in. and the installation clearances required by its instructions. Follow the wiring diagram for this model when making the replacement connections.

Buying tip: Match the lamp designation, number of lamps and supply voltage to the existing ballast.