Electrical Science Check

1. Demand charges on a business electricity bill are based on:

Total kWh used in the monthThe highest power draw in any 30-minute intervalThe voltage usedThe number of lights in the building

2. An energy meter typically measures:

Only voltageOnly currentActive (real) power in kW/kWh, and often power factor and reactive powerJust the temperature of the building

3. Which is a practical step to reduce electrical demand charges?

Turn off all lights at onceStagger start-ups of large equipment so they don't all switch on togetherUse only low-wattage equipmentIgnore the demand charge

Knowledge check