--subdivision Energy consumption under subjects, e.g. Agriculture--Energy consumption; Construction industry--Energy consumption; Dwellings--Energy consumption; and subdivision Fuel consumption under types of machinery, vehicles, etc., e.g. Agricultural machinery--Fuel consumption; Automobiles--Fuel consumption
Contactors Electric -- See Electric contactors Here are entered works on devices for repeatedly establishing and interrupting an electric power circuit. Works on the conducting part of a relay, switch, circuit-breaker, connector, contactor, etc., which coacts with another conducting part to make or break a circuit are entered under Electric contacts.