Double Pole Circuit Breaker Symbol. For all practical purposes conductors for circuit breakers are sized based on the 75 c column of table. Provide 120 volts 15 20 amps and have one hot wire and one neutral wire.
Circuit breakers symbols for use in electrical pneumatic and hydraulic schematic diagrams. Pole type 1 single width 13 mm energy efficiency qa only low voltage how to read circuit breaker markings and symbols x 2 n 1 n 2 4 1 3 x x 1 2 n n x 2 n 1 n 2 4 1 3 plus. Service entrance power 1 6.
You must size conductors to the lowest temperature rating marking on the breaker.
It connects three phases whenever there is an overload or short circuit in any phase the circuit breaker trips all three phases simultaneously. It cannot be used to supply 240 volts to a single circuit. A different type of doubled up breaker is a quad breaker which serves two 240 volt circuits but is the same width as a standard double pole breaker. Circuit breakers symbols for use in electrical pneumatic and hydraulic schematic diagrams.
