|
Some electronic ballasts are compatible with both T12 40W and T8 32W linear 4 foot lamps. These types of ballasts usually have an integrated circuit that can adapt to both lamp types. A T12 40-watt linear 4 foot lamp is designed for 430ma operation and a T8 32-watt linear 4 foot lamp is designed for 265ma operation. The Advance RELB-2S40-SC ballast is designed to output only 430ma to each lamp and is designed for T12 lamps. This ballast will push T8 (265ma) lamps at a higher current (overdrive them / drive them at an increased wattage).
Most commercial grade ballasts do not have a green ground wire. The ballast case and all metallic fixture parts must be grounded. In most cases the ground wire from the power cord is connected to the metallic fixture and/or ballast with a screw. Ballasts that are equipped with a green ground wire the wire is attached to the ballasts metal casing internally.
The method to removing the old wires from the sockets depends on the socket type. With most of them you can pull and twist the wire out. With some the socket has a hole/slit beside the wire connection. You can use another wire or other metal object and push it into this hole/slit and this will release the wire.
|