

Group relamping is the systematic replacement of lamps at pre-determined intervals. As opposed to spot relamping where lamps are replaced as they burn out, group relamping provides considerable labor and cost savings over the life of any lighting system.
The key advantages to group relamping include:
The optimal time for group relamping is usually at 70 to 80% of rated lamp life. This makes it the most cost effective time to replace all fixtures. Additionally, defective components such as ballasts and sockets can be fixed and fixtures can be cleaned during this time.