Glossary

Meter Constant

The number by which the total kWh in a billing cycle is multiplied to accurately reflect the number of kWh registered on the meter.

Minimum, Maximum and Average Foot-candles

Variables used to measure how evenly light is distributed in a given layout. As a rule, the lower the difference between the maximum and the minimum, the better the design. The Average figure is often used to indicate the overall lighting level in a given area. However, this figure inaccurately measures uniformity, since an area with very bright and very dark spots can average the same as an area with much more evenly distributed light.