GE Magnetic Ballast 2×F16T9/F12T9 120V 68190

Product purpose and fit

This GE magnetic ballast is built to drive two circular fluorescent lamps, specifically the F16T9 and F12T9 types, on a standard 120 V supply. It suits maintenance teams and facility managers who need a direct replacement for existing rapid-start fixtures in commercial or residential ceiling fittings. It is not suited for single-lamp fixtures, T5 or T8 linear tubes, or installations that require electronic high-frequency operation.

Capacity and headroom

The unit carries a 22 W rating for the smaller lamp and a 32 W rating for the larger lamp, giving enough headroom for normal start-up and steady running of both bulb types. Voltage tolerance spans 108 V to 305 V, so the ballast will sustain operation through typical mains fluctuations without tripping. It cannot support more than two lamps, nor will it ignite lamps outside the listed wattage range.

Thermals noise and power draw

Magnetic rapid-start construction means the core and coil run warm during continuous use, which is normal for this technology. An audible low-frequency hum may be noticeable in quiet rooms, especially when the fixture is mounted on a hard ceiling surface. Power draw at the mains matches the combined lamp wattage plus ballast losses, staying within the rated 120 V input envelope.