Basic Metal Halide Lamp Base Types Used in Commercial Exterior Lighting
Some types have an Edison screw metal base, for various power ratings between 10 and 18,000 watts. Other types are double-ended, as depicted above, with G4-G12 bases composed of ceramic, along with metal connections between the interior of the arc tube and the exterior. These are made of various alloys (such as iron-cobalt-nickel) that have a thermal coefficient of expansion that matches that of the arc tube. There halogen bulbs are mainly used in commercial exterior lighting . Lamp Base Types In lighting technology, socket plays an important role as it connects electrical supply with light bulb. The base part of the lamp connects to a socket and via that electrical supply passed to bulb. There are so many base types in lamps such as the Bayonet mount, pin bases, Edison screw base and the wedge base including one, two or four pins. G4 – Bi-pin In decorative task and under cabinet work, generally G4 halogen bulbs of 12 watts are founded. The reason is this bulb is rela