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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.

• 1
• 2
• 3

• hot
• neutral
• cold

• 2
• 3
• 4

• plastic
• metal
• rubber

• appliances
• ground
• fuse box

• 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
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