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What size of circuit breaker do you use for 25amperes induction motor?
Wiki User
∙ 13y ago
Read the specification plate on the motor to determine the amount of current that the motor uses, as well as the voltage and phase.
Most likely, it will be a 3 phase motor, so you can't simply connect it to your house wiring, but without sufficient information, it is impossible to tell you all of the specifics.
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The code book rates the amperage of a three phase 40 HP motor by different voltages. at 200 volts - 120 amps, 230 volts - 104 amps, 460 volts - 52 amps and 575 volts - 52 amps. A breaker for a motor has to be sized to 250% of the motors full load amps. Also the wire size for a motor has to be 125% of the motor full load amps.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoFor a 25 amp motor you will need a #10 wire with an overload protection set at 30 amps. Fused with a non-time delay fuse of 80 amps or a time delay fuse of 45 amps. The circuit breaker for this motor will be 60 amp. The rule of thumb for breakers is 250% of the full load amps. On start up a motor will draw up to 300% of its FLA (full load amps). In the case of this motor up to 75 amps. This is why the ratings of these safety devices are so much higher than the running amps of this motor.
Wiki User
∙ 10y agoA breaker has to be 250% of the motors full load amps.
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How do you choose circuit breaker all the control circuit if i have 50kw power of motor?
The breaker should be sized to 250% of the motor's full load amperage.
What is Selection procedure for motor protection circuit breaker?
The selection of overload protection for motors is taken from a table in the electrical code book. It is based on the full load current rating of the motor.
Cause of a circuit breaking tripping?
Tripping is caused by excessive current, which is usually the result of a fault in cable or equipment. The circuit breaker is there for safety and it trips to prevent a possible fire starting.
What is the reason for using 250 percent multipler for sizing motor circuit breakers in NEC?
When a motor starts the circuit breaker sees an almost dead short. Until the motor starts generating a back EMF , which opposes the current flow when rotation starts, the current is high. If the breaker is sized to the motors full load amperage, each time the motor is started, the breaker will trip.
Why motor protection circuit breaker is not used in star delta starter?
please you give me reply to answer.
What circuit breaker rating do you need for a 3 phase electric motor?
The circuit breaker is sized to the full load amps of the motor times 250%.
How do you choose circuit breaker all the control circuit if i have 50kw power of motor?
The breaker should be sized to 250% of the motor's full load amperage.
How are the two circuits of an induction motor similar to the circuit of a transformer?
They are magnetically coupled--a current in one circuit induces a current in the other one in both a transformer and an induction motor.
What is Selection procedure for motor protection circuit breaker?
The selection of overload protection for motors is taken from a table in the electrical code book. It is based on the full load current rating of the motor.
Where is the motor relay circuit breaker located on a 1989 mustang?
The motor relay circuit breaker may be found on the driver's side of the vehicle, on or near the fender apron. There is a cable that runs from it to the battery.
Cause of a circuit breaking tripping?
Tripping is caused by excessive current, which is usually the result of a fault in cable or equipment. The circuit breaker is there for safety and it trips to prevent a possible fire starting.
How many amp circuit breaker for 3 hp 230 volt motor?
16A
What is the reason for using 250 percent multipler for sizing motor circuit breakers in NEC?
When a motor starts the circuit breaker sees an almost dead short. Until the motor starts generating a back EMF , which opposes the current flow when rotation starts, the current is high. If the breaker is sized to the motors full load amperage, each time the motor is started, the breaker will trip.
How do I repair a Passenger side window that won't operate and the motor is still good on a 97 maxima?
if the the motor is good you need to check the circuit breaker because the circuit breaker might be the problem. window doesnt go bad my dude the motor goes bad check it again
Why motor protection circuit breaker is not used in star delta starter?
please you give me reply to answer.
What would cause a refrigerator to overload the circuit breaker?
Something wrong with it like a bad motor.
Does induction motor works on Electromagnetic induction?
Yes the Induction motor works on Electromagnetic induction principle.
