Three pole or three-way switches are used to control one or more lights or fixtures from multiple locations, such as the top and bottom of a flight of stairs. Closer inspection reveals that while a single pole switch has two terminals, a three pole switch has three.Click to see full answer. Consequently, can you use a single pole switch as a 3 way switch?Yes it can work. 3-way switches are spdt (single pole double throw) with 3 screw terminals, and regular switches are spst (single pole single throw) with 2 screw terminals. Just pick the correct two contacts and you are good to go. . A multimeter is the quick way to figure out which terminals to use.Beside above, what is the difference between a single and double pole switch? A single-pole switch controls just one circuit. A double-pole switch controls two separate circuits. A double-pole switch is like two separate single-pole switches that are mechanically operated by the same lever, knob, or button. A double-throw switch connects an input terminal to one of two output terminals. Simply so, how can you tell if a switch is 3 way? A more positive way to identify a 3-way switch is to look at the body of the switch and count the number of screw terminals: a 3-way switch has three terminal screws plus a ground screw. Two of the terminals are a light color—bronze- or copper-colored—and are called travelers.What is the symbol for a single pole switch?SPST = Single Pole, Single Throw. An on-off switch allows current to flow only when it is in the closed (on) position. SPDT = Single Pole, Double Throw.
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