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How many amps would it take to kick a 15 amp breaker with 7 ohms resistance on a 277 volt circuit?
Wiki User
∙ 14y ago
A 15 amp circuit breaker should trip at 15 amps regardless of the load voltages or impedances. If you have 277 volts and 7 ohms, the current would be 39.5 amps and a 15 amp circuit breaker should trip.
Wiki User
∙ 14y ago
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What is the standard to select circuit breaker?
Add up your amps to calculate your breaker size. Add up your loads (amps), divide by 0.8, and choose that size breaker. If that number does not correspond to a standard size breaker you go to the next higher standard size breaker.
Why not to overload a socket?
Yes! A socket is a part of a circuit. Usually there are a number of sockets and lights associated with a specific circuit. The wiring of the circuit and the circuit breaker are limited to a specific amperage. If you exceed the amperage, you can blow the breaker. If the wire is rated for 15 amps and the circuit breaker is rated for 20 amps, the wires can overheat and cause fires.
How do you work out the current in a circuit?
we can calculate the current in a commmon electrical circuit by this formulae i.e,I=V\R where i is the current flowing in the conductor, R is resistance , V is the voltage.. THE FORMULA IS CORRECT but the term conductor does not suffice an explanation since a conductor is low in resistance R= resistance not conduction.
Using ohm's law what is the formula to find the resistance in a circuit?
Resistance of the circuit = (voltage across the circuit) divided by (current through the circuit)
If volts increase amps will decrease?
Not necessarily. In a simple circuit V=IR, so if the resistance in a circuit remains constant, then voltage and current are directly proportional, so an increase in one will increase the other. If you were to change resistance and keep voltage constant, then the current would be inversely proportional to resistance, so as resistance went up, current would go down.
What would happenif you put an 8 amp circuit-breaker in a power circuit?
The circuit would be protected up to 8 amps before the breaker would trip. Any more that 8 amps and the circuit would open and shut the circuit off.
What is the continuous current draw on a 20 amp circuit breaker?
Depends on what you have connected to the circuit. It is less than 10 amps or the breaker would trip. A rule of thumb is you design for about 80% load related to the breaker. For 20 amps that would equal 16 amps.
How much resistance should be on a 5.0 kw heat strip?
Depends on the voltage. Wattage is Volts x Amps. Resistance (ohms) is Volts divided by Amps. So on a 120V circuit, it would draw 41.66 amps. To do that, it would need a resistance of 2.88 ohms. But on a 240V circuit, it would draw 20.83 amps. That would require a resistance of 11.52 ohms. Determine the circuit voltage, then use that to figure the amps, then use that result to calculate the resistance necessary.
What happens to amps when you increase the resistance of a circuit?
If you don't change the voltage between the ends of the circuit,then higher resistance in the circuit means lower current (amps).
If an electrician have a circuit that pulls a load of 10 amps what size breaker must that circuit be protected by?
If you are talking about a breaker in a house panel then a 15 amp breaker would be used. It is the smallest amperage breaker that you will find in a house panel.
The Function Of A Twenty Amp Breaker?
It limits the current to the circuit at 20 Amps. If a load on the circuit draws more than 20 Amps the breaker will trip and interrupt the current to all devices on the circuit.
What is 6InA in circuit breaker?
61 nano-amps is 0.061 milliamps or 0.000061 amps
How do you measur ampere?
You use an "amp gauge" to measure amps in an actual circuit. It is hooked in series with the load. It can be placed anywhere in the circuit as long as it is hooked in series. Mathematically, you have to know the resistance, or wattage and voltage of a circuit. Volts=amps*resistance or amps=volts/resistance, or resistance=volts/amps. Ohms law!
What is KA in Circuit Breaker?
KA stands for kilo-amps, or thousands of amps. Thus a 2KA breaker means it will trip when the load exceeds 2,000 amps.
Can a 8 amp be changed to 15 amps on circuit breaker?
If you are asking if you can change an 8 Amp Circuit Breaker to 15 Amps, the answer is no. If there is an 8 A breaker in place it is sized to protect the wiring and devices on the circuit. Increasing to 15 A would defeat this protection and could cause a fire or cause a connected device to be destroyed with higher amperage.
What breaker for 17.3 amps?
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. <<>> 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.
What size fuse required to supply a continuous load of 32 amps?
80% of 40 = 32 amps Load the circuit breaker to 80% choose a conductor to suit the circuit Breaker min.
