The correct connection to a ballast is found printed on the ballast label inside of the fixture.
ballasts can hum for several reasons, too low input voltage, too large of a load (wrong bulbs), or just cause they are dying. usually they need to be replaced.
Because it have floresent
A light that is mounted on the ceiling.
Its color is floresent ,and glows when not reflected on by any visiable light.
If the ballast on a fluorescent light blows the lamp will not work.
Warm dampy areas mostly. With alot of sunlight or just a floresent light..
yes..if we replace magnetic ballast with electronic ballast...there is no need of starter if we use electronic ballast.
If it's a fluorescent light, the sound is probably caused by a faulty ballast. <><><> If the light is incandescent and connected to an inexpensive dimmer, noise from the dimmer can cause the filaments to "sing." Better dimmers have better noise filtering.
need a universal voltage ballast 120/277 volt or a 277volt ballast