### Question
Can you define what power factor means?


### Answer
**Power factor** is defined as the following in *42 U.S.C. § 6291*:

> the power input divided by the product of ballast input voltage and input current of a fluorescent lamp ballast, as measured under test conditions specified in ANSI standard C82.2–1984, or as may be prescribed by the Secretary

#### Citation:
  - *42 U.S.C. § 6291*
  - Heading: **CHAPTER 76-AGE DISCRIMINATION IN FEDERALLY ASSISTED PROGRAMS > SUBCHAPTER III-IMPROVING ENERGY EFFICIENCY > Part A-Energy Conservation Program for Consumer Products Other Than Automobiles**

