The meters must be installed on these types of lighting equipment:
- Two table or floor lamps with a single light bulb, or a lamp that contains at least two light bulbs, that plug into wall sockets. Unfortunately, light fixtures that are that are controlled by light switches cannot be included in the study.
- Lamps that you use frequently. The metering equipment cannot be installed on lamps that are not turned on daily or near daily.
- Lamps that use regular incandescent, CFL, LED, or halogen bulbs.
- The other meter must be installed on a power strip used for a home entertainment center.