Connect the switch as you would with a simple switch handling each pole separately. One of the terminals is called the common terminal.
Pentair Single Pole Double Throw Rocker Switch 470186
How to test a double pole switch. Attach the main blue terminal to one of the poles on the side attach the main brown termainl to the pole right next to it. Shut off the power. On a single pole breaker they will test to see if the meter reads 120 volts. Cap wires as needed. Likewise on the double pole breaker theyll test for a reading of 240 volts. Disconnect and remove the switch.
Wiring a 20 amp 240 volt switch can be a confusing experience for the average homeowner used to working with standard 110 volt circuits. Attach the blue jumper connector to the opposite corner and the brown jumper to the other corner to form an x across the switch. This circuit breaker must be of the same or lower amperage as the circuit breaker that is tripping never greater. Your time will be well spent double checking your work. When the switch is in one position the common terminal is connected to the a terminal so current flows from the common terminal to the a terminal but no. If the electrician identifies a bad breaker theyll replace it and to determine what led to its failure.
Make sure that there are no cross connections between the two poles. If you do youre in for a bit of a jolt. For one thing both supply wires for this switch carry voltage. Connect the disconnected wires from the tripping circuit breaker to the second circuit breaker. If you decide to use a voltage tester dont touch a bare wire or the neutral as youre testing. If there is no continuity the switch has failed and needs to be replaced.
Sparky channel 6417 views. Shut off the power to the light switch circuit by switching off the appropriate breaker in your homes service panel breaker. Double switch test and replacement for bath fan and light in a 1960 house duration. The other two terminals are often referred to as a and b. Touch one prong to the terminal screw on the breaker and the other to the ground. Turn off power to the switch at the circuit breaker.
Thus a double pole switch has three terminals. The switch wires do not need to be disconnected at this time. A double throw switch connects an input terminal to one of two output terminals. Using a continuity tester on the terminals see if there is continuity when the switch is turned on. Disconnect the wires from one of the 220 volt circuit breakers that is working correctly. A low reading or zero indicates a bad breaker.
Identify the switch type. With both conductors carrying 120 volts there is an increased risk of injury or property damage. Unscrew the switch mounting screws and pull the switch out of the box enough to access the switch terminals. This switch doesnt use a neutral conductor. This kind of mistake is easy to make and potentially very dangerous depending on the application. Touch one prong to the terminal screw on the breaker and the other to the ground.
Gallery of How To Test A Double Pole Switch
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