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Full load starting current is typically in the region of 5or 6 times the full load motor current;.

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12y ago

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Why no load current is 5 percent of full load current in motor?

As the no load current is the current due to core losses of the motor which is very small .in no load terminals are open circuited no current flows through it, a small current flows which is due to core


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Why is motor current draw lower at full speed?

Because full speed is unloaded. As you load the motor, speed decreases, and slip increases, with an accompanying increase in current.


How is the full load current different to the starting current- is the full load current higher or lower than the starting current?

While starting a motor from standstill to its rated speed, the motor has to overcome the inertia and generate enough torque to over come it. In the process the motor takes higher current during the starting. Once started and set in motion the current reduces ti its normal value. Full load current is lower than the starting current normally.


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How do you calculate breaker capacity of 10 hp three phase induction motor?

The first thing you have to do is find the full load amps of the motor. The wire size feeding the motor has to be 125% of the full load current. The breaker is usually 250% of the full load current. If the voltage and amperage had been added to the question the exact breaker size could have been calculated.