How are digital ballasts wired into the lighting system?
Digital ballasts can be wired into the lighting system using Class 1 or Class 2 methods, according to the National Electrical Code (NEC). Digital ballasts may use a Class 1-rated 5-conductor cable that uses one hot (live), one neutral, one ground and two polarity-insensitive control wires, all routed together in the same conduit. It is also possible to install the ballasts and controls as a Class 2 installation, in which case the control wires must be routed through separate conduit as the power wires. Check with the ballast and controls manufacturers to determine whether their products are UL-listed for Class 1 installation.
Related Questions
- When renovating the building, is it better to upgrade the lighting system to more efficient lights and ballasts or replace the existing fixtures altogether?
- Our facility has a 480 volt HID lighting system. Since fluorescent electronic ballasts are not available in 480 volts, don’t we have to keep our HID system?
- Can lighting system ballasts be landfilled?
