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?
What is the wire that carries the current often called?
How many wires run through a piece of Romex?
What material is a Romex sheath made from?
An electrician wires Romex between the power outlets and the _____?
What size Romex would you usually find in a normal household?
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?
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?