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The (ideal) voltage is 480V line to line. The line to neutral voltage (if it is a grounded system - 4 wires) is 480 / 1.732 = 277 volts.
The actual measured voltage may be slightly higher or lower than this.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoOn a three phase system the voltage is equal through out all of the phases. Example L1 and L2 is equal to L2 and L3 which is also equal to L3 and L1. There are exceptions to this.
Voltages are always the same phase to phase in a three phase system. However, voltage phase to ground in some systems are different. 240 volt Delta systems, the voltage to ground in two of the phases will be 120 volt. The phase to ground voltage in the other can be anywhere from 165 to 200 volts.
AnswerIt is incorrect to ask what the voltage is on a particular conductor as 'voltage', by definition, is a 'potential difference' and, so, can only exist between two different points. You should be asking what is the 'potential' on line (not 'phase') 2 of a three-phase system, in which case it depends on (1) its point of reference (to earth? to another line conductor? to the neutral conductor?). In three-phase systems, potential differences or voltages are always measured either between line conductors or between a line conductor and the neutral conductor. The voltage between any pair of line conductors will be identical in magnitude, but will lead or lag the other line voltages by 120 electrical degrees.
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How many amps will a 50KVA 3phase bank carry on 277 - 480 volts?
50 kVA is 16.667 kVA per phase and you divide that by the phase voltage. Current = 16667 / 277 = 60 Amps
Hp equals 60 and volts equals 480 what are the amps?
746 Watts per horsepower / 480 volts x power factor x efficiency x 1.73 = amps assuming that the motor is three phase. 746 x 60 =44760 watts divided by 480 x 1.73 = 53.9 amps ( If the pf and eff. information is not known this will put you in the ball park)
Can you convert 120 volts 1 phase into 208 volts 3 phase 40 amps per phase and would it be cheaper to get 208 volts 40 amps per phase installed in your house by electrician?
Answer for USA, Canada and countries running a 60 Hz supply service.To answer the first part of the question. No you can not convert 120 volts single phase into 208 volts 3 phase. In fact it is the other way around, the 120 volts is the line to ground (neutral) of a three phase 208 volt system.The second part of the question is dependant on there being a three phase 208 volt system already installed. To obtain 40 amps per phase would require a three pole breaker to be installed in a 120/208 three phase distribution panel.The distribution panel would most likely be in the 100 to 200 amp capacity range. This kind of installation would definitely have to be installed by an electrical contractor as inspections and permits would have to be taken out for the project.As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.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 ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
How do you convert watts in to kwh in three phase system?
There are two ways: If the amps are the same on all three phases (voltspp is the phase to phase voltage): amps * voltspp * 1.73 = watts If the amps are different on each phase (voltspn is the phase to neutral voltage): (ampsA + ampsB + ampsC) * voltspn = watts In a 480V system, 480 is phase to phase and 277 is phase to neutral, likewise 208/120, etc. Example - 12A on all phases, 480/277V system: 12 * 480 * 1.73 = 9965W Example - phase A = 4A, phase B = 6.3A, phase C = 2.2A, 208/120V system: (4 + 6.3 + 2.2) * 120 = 1500W
How much current per phase will a 18KW motor draw on 415 v?
we can use the formula: Ip=KW/3/volts/pf
What would full load amps be on a 480volt 90 kw electric heater be pulling 36 amps per leg?
90 kW on 480 volts single phase would be 187.5 amps. On 480 v 3-phase it would be 108 amps.
How many amps will a 50KVA 3phase bank carry on 277 - 480 volts?
50 kVA is 16.667 kVA per phase and you divide that by the phase voltage. Current = 16667 / 277 = 60 Amps
Hp equals 60 and volts equals 480 what are the amps?
746 Watts per horsepower / 480 volts x power factor x efficiency x 1.73 = amps assuming that the motor is three phase. 746 x 60 =44760 watts divided by 480 x 1.73 = 53.9 amps ( If the pf and eff. information is not known this will put you in the ball park)
How do you calculate 3 phase power for a motor that draws 22 amps per leg it is a 480 3 phase motor do you use 480 x 22 or 277 x 22?
1.73*480*22
What is the ampere of 04 kilowatts at 230 volts in 3 phase?
I(per Phase)=4000/(230*3) = 5.8A
What are the volts per phase on a 240 volt system?
By 'volts per phase', I assume you mean 'phase voltage' as opposed to 'line voltage'?It depends on the country in which you live. In North America, for example, the secondary output of a three-phase distribution transformer typically delta connected, 240 V corresponds to both the phase and line voltages.In other countries, where a three-phase distribution transformer's secondary is wye connected, 240 V is typically a phase voltage and 415 V is a line voltage.
What is the voltage between neutral and earth if neutral is broken?
Normally, it is zero.Except in very special cases, the neutral and ground (earth) conductors in a building are tied together at one point in the system, so ideally the voltage difference would be zero. The reason that it might not be zero is there is current flowing in the neutral and, thus, voltage drop in the neutral conductor. Since the ground conductor normally never has current flow (unless there is a fault), there will be a difference in voltage equal to the voltage drop across the neutral conductor, which varies with load (current).It should be 0V , but as per our earth pit maintaining that voltage will be varied even also not exceed 5V.
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.
What frequency is used for electric power delivered to homes in Canada?
Homes in Canada use 240/120 volts at 60 cycles per second (60Hz) single phase. It is a split-phase system that delivers 240 volts to large domestic appliances (e.g. washing machines, dryers, air-conditioners, etc.) and 120 volts to lights and general socket outlets used for small appliances (coffee machines, electric shavers, televisions, etc.).
What is cable size for a 7.5kw 3 phase induction motor 70 meter run for cable 415v?
Current is about 18 amps per phase. Allowing for power factor and startup, I'd size the wire for 40 amps per phase, which is #5 wire. This wire has a resistance of 0.39 ohm per 1000 ft, which is 0.39 ohms per 305 meter, or 0.09 ohms per 70 meter. At 40 amps, there is a voltage drop on the wire of 40*.09 or 3.6 volts, less than 1% loss, so that is OK. Use 4 conductor #5 copper wire insulated for 480 volts. <<>> A #12 copper conductor will limit the voltage drop to 3% or less when supplying 13 amps for 230 feet on a 415 volt system.
Can you convert 120 volts 1 phase into 208 volts 3 phase 40 amps per phase and would it be cheaper to get 208 volts 40 amps per phase installed in your house by electrician?
Answer for USA, Canada and countries running a 60 Hz supply service.To answer the first part of the question. No you can not convert 120 volts single phase into 208 volts 3 phase. In fact it is the other way around, the 120 volts is the line to ground (neutral) of a three phase 208 volt system.The second part of the question is dependant on there being a three phase 208 volt system already installed. To obtain 40 amps per phase would require a three pole breaker to be installed in a 120/208 three phase distribution panel.The distribution panel would most likely be in the 100 to 200 amp capacity range. This kind of installation would definitely have to be installed by an electrical contractor as inspections and permits would have to be taken out for the project.As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.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 ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
How do you convert watts in to kwh in three phase system?
There are two ways: If the amps are the same on all three phases (voltspp is the phase to phase voltage): amps * voltspp * 1.73 = watts If the amps are different on each phase (voltspn is the phase to neutral voltage): (ampsA + ampsB + ampsC) * voltspn = watts In a 480V system, 480 is phase to phase and 277 is phase to neutral, likewise 208/120, etc. Example - 12A on all phases, 480/277V system: 12 * 480 * 1.73 = 9965W Example - phase A = 4A, phase B = 6.3A, phase C = 2.2A, 208/120V system: (4 + 6.3 + 2.2) * 120 = 1500W
