A lighting system consists of all the elements that work together to provide light in a space. They are:
Bulbs: responsible for providing artificial light.
Luminaires: lamp containers designed to control and direct the flow of light from one or more lamps.
Ballasts: responsible for limiting a lamp’s current and even the voltage to turn it on. These devices are electromagnetic or electronic, or a combination of the two.
Control mechanisms: the part responsible for controlling the lighting system, such as motion sensors or timers.