GE 74098 347-Volt UltraMax Electronic Fluorescent T8 Ballast 4 or 3 F32T8 Lamps

Ballast for 347-volt T8 fixtures

This GE 74098 UltraMax electronic ballast operates at 347 volts and drives three or four F32T8 lamps. It is built for commercial fluorescent installations that require instant-start operation and a low-profile housing. The unit weighs little and fits tight mounting spaces with its 8.9-inch length and 1.1-inch width.

Anti-striation circuitry and auto-restart

The ballast includes anti-striation control that suppresses the spiraling effect sometimes seen in T8 lamps. Auto-restart and thermal protection functions are integrated, while a Class A sound rating of 20 to 24 decibels keeps audible noise low. A ballast factor of .77 reduces per-lamp wattage for energy savings, and efficiency exceeds 90 percent.

Mounting slots and lamp count before ordering

Verify that the mounting slots set 0.3 inch apart match the existing fixture holes. Confirm the supply voltage is 347 volts and that the fixture uses three or four F32T8 lamps, as the ballast does not support other quantities. The low ballast factor means light output per lamp is reduced, so ensure the lower lumen level meets the space requirements.