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1. What voltage is the circuit? 2. What is the overcurrent device (breaker/fuse) rating? 3. What is the branch circuit wire size? The wire must be sized to carry the full breaker rated ampacity The branch circuit should not be loaded to greater than 80% of the breaker's rating. Volts X 80% of breaker amps = watts available. Single phase motors rule of thumb is 1100-1400 watts per HP. The precise maximum HP will depend on the current draw of the exact motor you choose, motor ratings do vary. On a 120v, 20a circuit for instance, 2HP is about it. On a 240v, 70a circuit, you can get up to a 14HP motor or so. Theoretically, with enough amps and volts, you could put a million HP motor on single phase, so it's really a matter of what motors are available for your particular voltage as well as how many amps you have available.
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What is the percentage load at which maximum efficiency occurs for the single phase transformer?
That is the maximum efficiency occurs when the copper losses are equal to the core losses of the transformer.
What is the purpose of conducting sc and oc test of single phase transformer?
to determine the transformer characteristics...
How do you use a one phase motor in place of a three phase motor?
To use a single/one phase motor instead of a three phase motor is possible if you have a three phase power supply as you will only need to tap one of the three phases together with neutral and an earthwire, however to use a three phase motor instead of a single phase will require the provision of three phase power supply.
Is Europe ac power single phase?
In Europe they have both single phase and three phase.
Can you use this switch for three phase incoming and single phase outgoing?
No A intermediate switch can not be used to change three phase to single phase.
Is it possible to convert a 2.4 kw single phase appliance to a 9kw 3 phase appliance?
No, it is not possible to convert a 2.4 kw single phase appliance to a 9kw 3 phase appliance. Single phase can not be converted to three phase with out considerable cost involved.
Is it possible to run a single phase motor on a drive?
yes it is
What will be the full load current of single phase 5Kva ups?
Assuming single phase voltage 220 Volts AC, the maximum current would be approximately 25 amps.
How you determine the starting and running winding of a capacitor start single phase motor?
I think the resistance value of starting winding is less than the running winding of the single phase motor
What is the percentage load at which maximum efficiency occurs for the single phase transformer?
That is the maximum efficiency occurs when the copper losses are equal to the core losses of the transformer.
How you differentiate between single phase and three phase transformer?
A single-phase transformer works with a single-phase supply, while a 3-phase transformer is used with a 3-phase supply. A single-phase transformer has 2 wires on the primary and secondary (ignoring taps) while a 3-phase tansformer has 3 or 4 wires on the primary and secondary.
What is the purpose of conducting sc and oc test of single phase transformer?
to determine the transformer characteristics...
What is max single phase hp as per nec?
The maximum single phase HP motor listed in the CEC is 10 HP. At 115 volts 100 amps and 230 volts 50 amps.
Can I convert Single phase to three phase for resistance heating?
Single phase can't be turned into 3-phase by any reasonable means. But on the other hand resistance heating is fairly straight forward. If only the fuse rating is high enough it might be possible to rewire a 3-phase heater to run from a single-phase source.
Can you operate single phase motor from drive?
yes it is possible if you provide full details
What instrument would you use to determine the phase of a transformer?
I'm not sure I understand the question. If you are asking if it's single or 3 phase, this will be marked on the name plate.
How do you determine a 3 phase motor and each winding?
To see if the motor is three phase or single phase look at the motor's nameplate. There it will tell you what the voltage needs to be and what system phase the motor needs to be connected to operate properly.
