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Motors are rated either in Watts or Amps, and by Voltage. If the motor is rated in Amps, that is the fuse or circuit breaker size you will need. If rated in Watts, you will have to use the formula P=IE, where P is power in Watts, I is current in Amps, and E is Electromotive Force in Volts. Since we know the watts and volts, we solve for current, thus: I=P/E, and I will be your current rating.
One note: These calculations give the MINIMUM rating needed for the motor to run. Fuses and circuit breakers are usually designed so that they will break if the circuit pulls 250% of the Motor's rating.
What else can I help you with?
What type of circuit breaker is required for a 240 v branch circuit?
the circuit breaker used will be miniature circuit breaker(MCB) maily used in homes.Answer for USA, Canada and countries running a 60 Hertz supply service.A two pole circuit breaker is used for a load of 240 volts. It is sized, according to the load amps of the device, to protect the wires that supply the load current.
Where circuit breaker are used?
Circuit breakers do not use anything, they are a controlling device. They can automatically open the circuit if the current exceeds the current rating and you can manually disconnect the power from the circuit.
What is the switch on a overload?
to protect the source from overloading a switch can be opened as a circuit breaker, fuse, overload protection schemes
What one is better fuse or circuit breaker?
IMO it would be because the circuit breaker has the possibility of going bad and not working (allowing a short to move through the device), but fuses blow (cause a break) no matter what if shorted.
Why use an enclosed circuit breaker?
To protect the wiring from overheating and catching on fire.AnswerThe term, 'switchgear', describes a variety of switching devices including circuit breakers and isolators (disconnects).A circuit breaker is an overcurrent protection device. Overcurrents are overload currents (due to too much load for a given circuit) or short-circuit currents (due to electrical faults).
What is the function of the fuse or circuit breaker in a circuit?
A circuit breaker/fuse is designed to protect the wiring from getting overloaded.
What is the maximum amperage rating for a circuit breaker that can safely protect a 20 amp circuit?
The maximum amperage rating for a circuit breaker that can safely protect a 20 amp circuit is 20 amps.
How are circuit breaker and fuse alike?
They both (try to) protect the rest of the circuit.
What is the purpus of a circute breaker?
The purpose of a circuit breaker is to protect an electrical circuit from damage caused by excess current. When the current exceeds a safe level, the circuit breaker trips and interrupts the flow of electricity to prevent overheating and potential fire hazards.
A parallel circuit breaker should be connected in a parallel to the circuit it's protecting?
For a circuit breaker to protect anything, it must be wired in series with whatever it is protecting.
What devices do not protect you from electrical fires?
circuit breaker
Can you replace a 20 amp circuit breaker with a 25 amp circuit breaker?
No. The breaker must protect the circuit components such as wiring, outlets and switches that are connected to the breaker. Therefore if you have a 30 amp circuit as dictated by its components you need to protect it with a 30 amp or less breaker.
What is the function of a circuit breaker in a cu al breaker panel?
A circuit breaker in a circuit breaker panel is designed to protect the electrical system from overloads and short circuits by automatically shutting off the flow of electricity when it detects a problem.
What is the purpose of a Gould breaker in an electrical circuit?
The purpose of a Gould breaker in an electrical circuit is to protect the circuit from overloads and short circuits by interrupting the flow of electricity when necessary.
What materials can be used to protect a circuit?
Fuse, screw in or plug, circuit breaker, fuseable link
What is the purpose of a circuit breaker in an electrical system, and how does it help to protect the circuit from overloads and short circuits?
A circuit breaker is a safety device that automatically cuts off the flow of electricity in a circuit when it detects an overload or a short circuit. This helps to protect the circuit and prevent damage to electrical devices or fires.
Why is the circuit breaker tripping with no load?
A circuit breaker may trip with no load due to a short circuit, ground fault, or overheating. These issues can cause excessive current flow, triggering the circuit breaker to protect the electrical system from damage or fire.
