Which of the following best describes a double pole single throw switch used in lighting systems?
a) on/off for only one wire, usually the black
b) on/off for only one wire, usually the red
c) on/off for only one wire, the hot (black, red, or blue)
d) two wires, either opens both sets of contacts or closes both sets of contacts at the same time.
e) allows a single 120 V circuit to be opened or closed from two locations
Answer: D