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The Ultimate Three-way Switches Quiz
by Staff
You are ready for bed and want to walk up the stairs to the bedroom. At the bottom you flick a switch to turn on the stairway lights and when you get to the top there is another switch to turn the same lights off. It's thanks to three-way switches that you can do this. Learn all about these special switches by taking this quiz.

How many switches do you need to construct a three-way switch circuit?

  • 1
  • 2
  • 3

What is the wire that carries the current often called?

  • hot
  • neutral
  • cold

How many wires run through a piece of Romex?

  • 2
  • 3
  • 4

What material is a Romex sheath made from?

  • plastic
  • metal
  • rubber

An electrician wires Romex between the power outlets and the _____?

  • appliances
  • ground
  • fuse box

What size Romex would you usually find in a normal household?

  • 14-gauge
  • 20-gauge
  • 26-gauge

What is different about the special Romex used for wiring a three-way switch?

  • It has an extra ground wire.
  • It has a wider sheath.
  • It has an extra insulated wire.

What is the purpose of a three-way light switch?

  • It allows you to dim the light.
  • It allows you to control the light from two switches.
  • It allows one light switch to control three different lights.

Why can't you mark the on and off positions on a three-way switch?

  • Both positions can turn the light on and off.
  • The switch is inaccessible.
  • It is important for the electrician to figure it out by himself.

What does the "three" in a three-way switch refer to?

  • three positions each switch can be set to
  • three terminals in the switch
  • three switches in the circuit

When wiring a switch, where would you put the three-way Romex?

  • between the power source and the first three-way switch
  • between the two three-way switches
  • between the second three-way switch and the light

What must you do before testing electrical wiring?

  • turn off the switch
  • turn of the power
  • remove all light bulbs from that circuit

What tool can you use to find out how your house is wired?

  • an ohmmeter
  • a continuity detector
  • both of the above

If one three-way switch is stuck, what would happen?

  • You wouldn't be able to turn the light on at all.
  • The other three-way switch would now act as a normal switch.
  • The circuit would blow the fuse.

Should three-way switches be wired in series or parallel?

  • series
  • parallel
  • either of the above