If an electric furnace were equipped with three 5-kW heating elements, which device would allow them to cycle at different intervals?

Question

Quizplus · Accepted Answer

A sequencer is a device that allows multiple heating elements to cycle on and off at different intervals, which is exactly what is needed in this scenario for the three 5-kW heating elements. An interlock is used to ensure that only one heating element can be on at a time, a limit switch is used to shut off the furnace if it gets too hot, and a room thermostat only controls the overall temperature in the room.

If an Electric Furnace Were Equipped with Three 5-KW Heating