240 volts require 2 poles on a panel - 120V each pole - so the answer on "how" is that you can't.
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No, it is a 30 amp breaker on each side. Remove it and install a 15 amp single pole breaker.
Use of a double pole breaker or a single pole breaker depends entirely on the application. If you don't know about the application, contact a qualified electrician in your area.
Two pole (for 240V), 30A typical.
Assuming a 120V circuit then a 30A Single Pole. For a 240V circuit an 30A two pole. Of course anything smaller that a 30A is acceptable. 30A is the maximum allowed.
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A single pole 15 amp breaker can only be setup for 120v. You need a double pole 15 amp breaker, which looks like two 15a breakers attached with a bar across the two actuators. Each leg provides 120v, or in the case of your breaker, 240v across the two legs.
No, it is a 30 amp breaker on each side. Remove it and install a 15 amp single pole breaker.
A single pole breaker is made or used to protect the panel buss for 110 volt devices, A double pole breaker protects the buss for 220 volt devices.
Use of a double pole breaker or a single pole breaker depends entirely on the application. If you don't know about the application, contact a qualified electrician in your area.
In America, a 2-pole breaker is controlling 240V. 120V per leg.
Two pole (for 240V), 30A typical.
Assuming a 120V circuit then a 30A Single Pole. For a 240V circuit an 30A two pole. Of course anything smaller that a 30A is acceptable. 30A is the maximum allowed.
one pole
Yes, otherwise your double pole breaker will shut the other circuit off when one of them trips.
A single pole circuit breaker can protect one hot wire to a given load where as a two pole circuit breaker can protect two hot wires to a given load. In the North American system this would equate to 120 volts on a single pole circuit breaker and 240 volts on a two pole circuit breaker.
Yes, but you only make the connection to one pole of the two pole breaker.