Single Pole Double Pole Single Pole Light Switch Wiring

The double pole light switch also has on and off markings and like the single pole also turns off lights from a single location.

Single pole double pole single pole light switch wiring.

This type is useful when two different circuits have to be turned on together such as when one circuit powers a bathroom light and a different circuit powers an exhaust fan. Whereas a single pole switch has on and off markings a three way switch doesn t. The difference between a single and double pole switch is that the latter controls two circuits at the same time. Single pole switches are the most common light switches in a home.

A single pole light switch is a fairly simple circuit. One screw terminal is for the hot wire that feeds the switch from the power source. Double pole switches and wiring. There are many variations and different ways that it can be wired but the most common and most basic variation has the power supply to the switch box and a switched line from there to the light.

A double pole single throw dpst switch controls the connections to two wires at once where each wire only has one possible connection. That s because the three way switch is used in conjunction with another three way switch to power a single light fixture and turning the light fixture on and off may require different lever positions. The difference between a single and 2 pole switch is a 2 pole is nothing more than two single pole switches built into one device. In other words it s like two simple switches controlled by a single actuator.

However this switch has four terminal screws used to connect a 240 volt circuit two 120 volt circuits that share a common white wire and always has a ground terminal screw. Two for incoming hots and two for outgoing hots. The other terminal is for a second hot wire called a switch leg that runs only between the switch and the light fixture. It has four terminals.