The B30 emergency ballast works in conjunction with an AC ballast to convert new or existing fluorescent fixtures into emergency lighting. The emergency ballast consists of a nickel-cadmium battery, charger and electronic circuitry in one red case. The B30 can be used with most 17 - 215 W (2’ - 8’) T5, T8, T9, T10 or T12 fluorescent lamps without integral starters, including U shaped, HO, VHO, circline and energy-saving. One- or two-lamp operation may be selected. It is also compatible with most one-, two-, three- and four-lamp electronic, standard, energy-saving and dimming AC ballasts. If used in an emergency-only fixture, no AC ballast is necessary. The B30 is suitable for indoor and damp locations. It is not suitable for air handling heated air outlets or wet or hazardous locations. Recommended applications include: hospital surgical suites and areas along the path of egress with high ceiling heights, as well as health care, educational and commercial facilities needing higher levels of emergency illumination.