The formulae for calculating watts to amps is Watts divided by Voltage. Therefore to get from Amps to Watts the calculation is Amps × Voltage. Therefore if you are working on a 240 volt supply the calculation is 20 (Amps) × 240 (Volts) which = 4800 watts.
Each wire on a two pole 20 amp breaker will allow 20 amps maximum before the breaker will trip.
In a 20A double pole circuit breaker, although the breaker says 20A, the breaker is actually two 20A single pole breakers, joined together by one actuator.
A double pole circuit breaker has two 120v branch circuits, hence where the 240v comes from. The two are independent 120v circuits to ground. Each branch remains electrically independent of each other, but with one common ground. Each of the two branches, on these two single pole ‘joined’ breakers, will handle 20A, for a total of 40A.
For the more Technical:
Ohms law causes the joined breakers to behave as if it were a 40A circuit, as far as the electrical panel is concerned, because there’ll be 40A going into the breaker, but splitting into two separate 20A circuits, or branches, of electrical current: 20A+20A=40A.
Conclusion:
In the past, this was easy to see because, each side was labeled with the number 20; however, more and more manufacturers are electing to control both breakers in a 20A double pole circuit breaker, with one single handle.
Industrial Electronics, Computer Aided Design & Computer Aided Manufacturing
Watts = Amps x Volts. 60 x 240 = 14400
30X240=7200
2.3 kw per hour on a 110-120 volt circuit.
The load exceeds the limit of the breaker or fuse. For example a 20 amp breaker on a 120 volt circuit will handle 2400 watts. Exceed that wattage and the breaker will trip or the fuse will blow.
At 120 volts a 15 amp breaker can be loaded to 1800 watts before it will trip. If it is a continuous load then the electrical code states that it is only allowed to be loaded to 80%. This will be 1800 x .8 = 1440 watts. If the voltage is not 120 volts use the following equation Watts = Amps x Volts. Amps being the breaker size that is to be used.
Watts = Amps x Volts. 60 x 240 = 14400
30X240=7200
2.3 kw per hour on a 110-120 volt circuit.
The maximum wattage that a 30 amp breaker can handle is 30 x 230 = 6900 watts. Other variables come into play and this number will decrease depending on the load, duty time, and difference in voltage fluctuation.
The load exceeds the limit of the breaker or fuse. For example a 20 amp breaker on a 120 volt circuit will handle 2400 watts. Exceed that wattage and the breaker will trip or the fuse will blow.
At 120 volts a 15 amp breaker can be loaded to 1800 watts before it will trip. If it is a continuous load then the electrical code states that it is only allowed to be loaded to 80%. This will be 1800 x .8 = 1440 watts. If the voltage is not 120 volts use the following equation Watts = Amps x Volts. Amps being the breaker size that is to be used.
The equation that you are looking for is I = W/E. Amps = Watts / Volts.
1440
To answer this question a voltage must be given. Watts = Amps x Volts. <<>> Answer At 115 volts ac, 30 amps equals 3,450 watts.
20-amp breakers can be found for many different voltage levels. The higher-voltage ones tend to be more expensive. A breaker can be used in a circuit of equal or lower voltage than the rated voltage of the breaker.
This speaker is 500watts max.
Watts = volts x amperes. So if your region uses 110 volts, 20 amperes is equivalent to 2200 watts; if your region uses 220 volts, 20 amperes is equivalent to 4400 watts.