Single Pole Circuit Breaker Wiring Diagram
As shown in the fig the built in white wire on the back side of arc fault circuit interrupter circuit breaker has been directly connected to the neutral busbar in the main board. This circuit breaker wiring diagram illustrates installing a 20 amp circuit breaker for a 240 volt circuit.
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Single pole circuit breakers supply 120 volt power to circuits while double pole circuit breakers supply 240 volts.
Single pole circuit breaker wiring diagram. In which i shown the single pole mcb miniature circuit breaker which controlled the phase wire line and the neutral is direct. The 12 2 gauge cable for this circuit includes 2 conductors and 1 ground. When there is an overload in a single pole breaker s circuit only that particular breaker trips.
In distribution board we get phase wire supply from the main circuit breaker and connect to all single pole mcb circuit breakers. Most of the light fixtures and ordinary plug in outlets in your home are served by single pole 120 volt breakers while heavy appliances and utilities such as clothes dryers whole house central air conditioning and electric. Same we use single pole mcb in our distribution boards.
The wiring into a breaker must correspond to its amperage. Here i shown the single pole mcb wiring connection diagram. This video will show a diy kind of person how to wire and install a single pole circuit breaker.
The builtin white wire in the ground fault circuit interrupter circuit breaker should be directly connected to the incoming supply neutral bar in the home mains distribution board or it will not work otherwise. Appliances circuits they re used for. A 3 wire 240 volt circuit has two hot wires each supplying 120 volts for a total of 240 and an equipment ground wire.
A breaker panel box 15amp 20amp 30amp 50amp and gfci breakers. Single pole breakers are wired with one hot wire and one neutral wire. As i shown in the above diagram.
Twelve gauge wire suits 15 to 20 amp breakers. While an entire double pole breaker can be. 8 gauge wire goes with 40 or 60 amp two pole breakers.
The white wire is used for hot in this circuit and it is marked with black tape on both ends to identify it as such. The following wiring shows two outlet receptacles has been wired and protected through single phase single pole afci circuit breaker. A 120 volt circuit has only one hot wire connected to the breaker plus a neutral wire connected to the neutral bus bar in the service panel.
A neutral wire is not used in this circuit. Aug 8 2016 clear easy to read wiring diagrams and instructions for household circuit breakers including. The following wiring shows an ordinary outlet has been wired and protected through single phase single pole gfci circuit breaker.
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