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The formula you are looking for is I = kva x 1000/1.73 x volts.
This relates to 118 amps.
A #2 wire with an insulation factor of 90C is rated at 120 amps.
Factoring in 80% capacity you should go to the next wire size which is a #1.
A #1 wire with an insulation factor of 90C is rated at 140 amps.
<<>>
bout 4mm
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized
IF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
What else can I help you with?
How do you convert 1 phase 240 volt power to 3 phase 480 volt power?
Any two legs of the 480V will give you 240 V Single phase. I apologize for the wrong information here. A friendly member reminded me of the correct answer. I stand corrected. Any two legs would be at 480 single phase. One leg to neutral will give you 277volts not 240 (408/1.73). You would need to install a step down transformer on the 277v line to achieve 240v.
What size main breaker feeding 480v 75 kva transformer?
An exact breaker size can not be given because the voltage, and hence the calculation for current, is not given. A transformer shall be protected by an over current device that is not rated at more that 150% of the primary current.
How do you get 480 vac?
1. With a transformer 2. With a specialized power drop from the power company. 3. Across two hot phases in a 240v two or three phase power drop in Europe, etc (not sure about this one, I have heard that it might not work this way).
What is is the formula for calculating the full load current of 23KVA generator?
to calculate the motor full load current one should know motor power factor, supply voltage and phase of supply. Assuming your motor is with 0.85 pf and 3 phase, 415V source then P = (Sqrt3)*V*I*pf 18500 = 1.732*415*0.85*I hence I = 30.2A
What are advantages of three phase ac and a single phase ac?
In a typical 3 phase system you have multiple voltages and configurations that can be used in either single phase or 3 phase, depending on how the circuit is designed. A single phase system is just single phase. You can have multiple voltages but it is always single phase.For example, in a typical 277/480v 3 phase system you can power 277v single phase lighting or equipment, 480v single phase lighting or equipment (which uses 2 legs of the 3 phase system but operates like any other single phase circuit), or 480v 3 phase motors.When comparing motors, a 3 phase motor will be substantially smaller than a single phase motor of the same horsepower. You can also reverse a 3 phase motor by switching any 2 leads. A single phase AC motor runs in one direction regardless of how the leads are connected.AnswerFor a given load, a three-phase transmission system requires less volume of copper in terms of conductor size, compared to single phase, so it is more economical to use three-phase.
Can a 600V rated cable be use in 480V 3 Phase Ckt?
yes,
Can you modify a 220v generator into 480v power output?
Not on small household generators as they are only single phase. On large industrial 3 phase machines over 100 KW there are internal taps that can be changed depending on the generator coil configurations to select a variety of voltages.
What does 277 vac mean?
That's 277 volts of alternating current. This is typically one phase of a 480v 3 phase system. Don't worry that 3 x 277 adds up to more than 480v. A 277v line is typically one phase of a 480v 3 phase system.
What is the nominal voltage of a 150 kW 480 v generator?
480V.
How do you convert 380v 3 phase to 220v 3 phase?
Mathematically, just divide 480 by the square root of three. Electrically, 480V refers to the line-to-line value of a three phase system. For example, measure the voltage across A-phase and B-phase and you'll get 480V. 277V is the line-to-neutral value. Measure the voltage across A-phase and the neutral conductor and you should get 277V.
What is the voltage for each leg on a 480v 3-phase pannel phase to neutral?
Only one neutral conductor is typically in a 3 phase panel.
How is line voltage computed in a wye three phase cofiguration?
Line voltage equals phase voltage multiplied by the square root of three. a.k.a. E l = E p X 1.73 In a 3 phase 480v system the phase voltage is 277v. Therefore E l = 277 X 1.73 = 480v
What is the high leg in a three phase 480 panel?
there isnt a high leg in a three phase 480v panel only on 240v panels
What size wire to use with 50 amp 480v 3 phase so cord size?
6
What cable size of wire if the machine is 50hp?
If it is a 480v 3 pH machine, #4 wire will be fine.
Difference from 1phase generator and 3phase generator?
Single Phase or 1ph is typically what you would find in a residential dwelling or light commercial setting. 120 / 240 volts are single phase 120/208 can be single phase as well.Three Phase or 3ph is typically what you would find in a heavy commercial or industrial enviroment. 277 / 480 voltsin 1ph L-1 to N or G= 120v L-1 to L-2= 240vin 3ph L-1 to N or G= 277v L-1 to L-2= 480v, L-2 to L-3= 480v orL-3 to L-1=480vIf you were to look at Phase power it would be1ph 3phL-1 L-2 N G OR L-1 L-2 L-3 N GL= LineN= NeutralG= Ground
3 phase reverse relay can be utilized for motor control speed?
3 phase reverse relay can be utilized to control 480V motor 60HZ for controlling their speedspeed.
