2 pole 15 amp is a 15 amp circuit breaker with 2 separate breakers tied together so that when one trips it causes the second pole to also break. 2 pole, or double pole breakers are used on 220 volt circuits which are actually 2 different phases of power from the breaker box. the normal service to the house if 220 volts consisting of a common,or neutral feed and 2 110 volt feeds that are 120 degrees out of phase. the normal single pole breakers in the box are alternately tied to the 2 phases. when a double pole breaker is used, it is feeding 2 110 volt lines to the device, which uses the 2 110 volt lines to get 220 volts, and does not normally use the neutral wire.
hoping this is clear to you :o)
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