I would suggest a 20 amp breaker.
* Added - I would suggest a 25 amp breaker. A slight surge, depending upon what equipment is the source of the 17.3 amp load, should not result in circuit breaker opening.
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In North America, the electrical code only allows circuit loading up to 80% on a continuous load. A 20 amp breaker can be legally loaded to 16 amps. A 25 amp breaker can be legally loaded to 20 amps.
A #10 wire has the capacity for 30 amps. No breaker larger than 30 amps should be used to protect the circuit.
Breaker sizing is dependant on what the load amperage is that the breaker is connected to. If the amperage is not given but just the wattage, use this equation I = W/E. Amps = Watts/Volts. This air conditioner unit should be on a dedicated circuit receptacle. On these types of loads the conductor can only be loaded to 80% of the conductors rating. So a 15 amp breaker times 80% = 12 amps or Watts = Amps x Volts, 12 x 120 = 1440 watts. A 20 amp breaker times 80% = 16 amps or Watts = Amps x Volts, 16 x 120 = 1920. Once the breaker is sized remember to use the correct wire size to correspond with the amperage of the breaker.
For typical residential house wiring 12 AWG wire is required for a 20 Amp breaker. If you change out the breaker for a 25 A breaker you would have to rewire the circuit with 10 AWG. In that case you could up the breaker to 30 Amps. All outlets and switches should be rated at the same voltage and current as the breaker.
3000 / 240 = Amps. You de-rate a breaker by 20 % for continuous load like an oven. You could get by with a 20 Amp breaker and 12 AWG wire. However, I would recommend 30 Amps and 10 AWG for an oven for the long run.
No, it is not safe to use a #8 conductor on a 50 amp breaker. A #8 conductor is only rated at 45 amps capacity. By connecting it to a 50 amp breaker, which would trip at 50 amps on an overload, would overload the conductor by an extra 5 amps. This would be a conflict against the electrical code.
A double breaker is a breaker that has 2 switches on it. One of the switches is 20 amps and the other is 30 amps.
KA stands for kilo-amps, or thousands of amps. Thus a 2KA breaker means it will trip when the load exceeds 2,000 amps.
The maximum amperage capacity of a Siemens breaker rated at 200 amps is 200 amps.
The maximum current rating for the circuit breaker is 150 amps.
The maximum current rating for a 2 pole breaker that can handle 25 amps is 25 amps.
The maximum current rating for the circuit breaker that can handle a load of 40 amps is 40 amps.
The number that is on a breaker is the amount of amperage that the breaker can deliver before it trips. This is the same regardless of how many poles the breaker is.
The maximum current rating for the circuit breaker needed for a device that operates at 20 amps is 25 amps.
For a 41 amp load, you would typically use a 50 amp circuit breaker. The general rule is to select a breaker size that is 125% of the continuous load amps or equal to the load amps if it is not a continuous load. In this case, 41 amps is considered a continuous load, so you would round up to the nearest available breaker size, which is 50 amps.
61 nano-amps is 0.061 milliamps or 0.000061 amps
The maximum current capacity of a circuit breaker rated at 150 amps is 150 amps.
15 amp breaker.