How to Wire a Double Switch (with Pictures) - wikiHow MethodTipsWarningsThings Needed Cut the power to the room you're working in. Head to your circuit breaker and turn off the flow of electricity in the room you are working. Usually the correct circuit is labeled, but if it is not you should turn off all the power in order to be safe. The energy going to a switch is nothing to scoff at, and it can cause serious damage if you come in contact with it. You should still wear Use a voltage detector to ensure that there is no power coming to the wall. Touch the device to the See all 6 steps on wwwhowViews: 403K Electrical Wiring Difference Between Single Pole & Double The difference between a single- and double-pole switch is that the latter controls two circuits at the same time. A double-pole switch is what you need to control a 240-volt device because 240-volt circuits have two hot wires. It has four terminals: two for incoming hots and two for outgoing hots.Author: Chris Deziel How to Wire a Double Switch - 2 Single Pole Switches Click to view on Bing1:48How to Wire a Double Switch - 2 Single Pole Switches FIX IT Home Improvement Channel. Loading I show how to wire a double switch with 2 single pole switches. Category Howto & Style; Show more Show less. Author: FIX IT Home Improvement ChannelViews: 287K How to Wire a Single Throw Double Pole Switch | Hunker A double pole single throw (DPST) switch controls the connections to two wires at once, where each wire only has one possible connection. In other words, it's like two simple switches controlled by a Wiring Diagram for Light Switch : Electrical Online Here is a wiring diagram for a light switch (four way light switch). It is possible that you may encounter a double pole light switch within the home, but these are not very common in a residential setting. These switches have four terminals as well, but the terminals are identified as “line” and “load”.