Where would a double pole switch be used?

Answer 1

Yes . Although a double pole switch is not needed.In section 26 it states that circuit breakers shall open all ungrounded cicuit conductors simutaniously. All you rally need is a single pole switch but you have a double pole switch .

Answer 2

This is not something i would recommend doing in most applications but if it is being done the best way to handle the situation is to feed the two pole switch with a grounded 3 conductor wire (I.E. 1 black wire, 1 red wire, 1 white wire and 1 bar copper wire for ground). The 3 conductor wire must be fed from a internal common trip 2 pole breaker and I recommend installing an AFCI breaker if this is for residential applications. Off of the switch you would then feed one circuit off of each line and then combine all the grounds under on connection and all neutrals under another connection. This connection is meant to supply two 120v circuits but i strongly recommend having a qualified electrician do this. Be aware this method will cause you to have 240v in your switch box which can be deadly if not handled correctly. On the other hand if you are trying to feed two 240v circuits using one switch you will cause a very serious life safety issue and i recommend not trying to do this. I also urge others to not post instructions on how to do this.

Answer 3

It is used to switch two wires at the same time. A double pole switch can be used to isolate a circuit from the house supply, but for low-power circuits like lamps there is only a single pole switch that controls the live wire.

Answer 4

Answer for USA, Canada and countries running a 60 Hz supply service.

If you are talking two way as being the same as a three way North American switch then the answer is no. A double pole single throw switch is used for two types of installation. The first is if the project calls for two separate circuits to be switched from a single location. One side of the two pole switch would control one circuit and the other pole of the switch would control the other circuit.

The other application is when switching 240 volt loads. The North American electrical code requires that both legs of the load be isolated when the switch in the circuit is opened. If just a single pole switch was used this would open the load current but would still leave one leg of the 240 volt supply "hot" to ground.

This is not a safe condition to have if you are required to work on the circuit.

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

Answer 5

to turn on a 240v or480v system,like a 240v waterheater