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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.
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bout 4mm
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Wiki User
∙ 14y ago
The cable size for a 50kVA 3-phase 480V generator would typically be 4/0 AWG copper conductors. It's always best to consult with a qualified electrician or electrical engineer to ensure the correct cable size based on the specific installation requirements and local electrical codes.
Wiki User
∙ 12y agoSome of this has to do with the length of the cable run but assuming a 100 foot run you should use no less than a 10 AWG copper wire or an 8 AWG Aluminum wire. With this size of generator be SURE to get everything grounded properly!
Wiki User
∙ 11y agoCable size is based on amperage.
The formula for amperage when the Kva is known is; Amps = kva x 1000/1.73 x Volts. 30000/1.73 x 220 = 30000/380 = 79 amps.
The North American code states that the conductor size feeders for motors or generators has to be 125% of the amperage output or input. Therefore 79 x 125% = 98.8 amps.
A #3 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 100 and 110 amps respectively.
Wiki User
∙ 9y agoThe line-to neutral voltage is 120 v and the line current is 50,000/3/120 or 139 amps, with a cable size of 0 gauge US.
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How do you convert 1 phase 240 volt power to 3 phase 480 volt power?
To convert 1 phase 240V power to 3 phase 480V power, you would need to use a phase converter or a transformer. The phase converter can create the third phase, while the transformer can step up the voltage from 240V to 480V. It's important to consult an electrician or engineer to ensure the conversion is done safely and meets the necessary requirements.
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?
To get 480V AC, you typically need to use a three-phase transformer or connect three single-phase transformers in a wye or delta configuration. Each phase will provide 277V, and when measured between any two phases, the total voltage will be 480V. Make sure to consult with a qualified electrician to ensure proper installation and safety.
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?
Three-phase AC systems offer higher power capacity, lower energy costs, and better efficiency compared to single-phase AC systems. Single-phase AC systems are simpler and less expensive to install and maintain, making them more suitable for smaller applications or locations where three-phase power is not readily available.
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.
What does each of the phases mean?
Phase 1 - Introduction: In this phase, the project is initiated, stakeholders are identified, and the project objectives and scope are defined. Phase 2 - Planning: Detailed project plan is developed, resources are allocated, schedules are created, and risk management strategies are identified. Phase 3 - Execution: Project tasks are carried out according to the project plan, and resources are managed to achieve project objectives. Phase 4 - Monitoring & Controlling: Project progress is monitored, performance is measured, and corrective actions are taken to ensure that the project stays on track. Phase 5 - Closing: The project is formally completed, deliverables are handed over to the client, lessons learned are documented, and the project is closed out.
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
