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Verified answer
Use a voltage regulator and plug it in 120 volt socket of the voltage regulator.
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The above answer is not good advice because a 120 volt air conditioner takes a lot of current. (Amps) Normal-sized SMALL domestic voltage regulators or step-down Transformers are not intended to provide power to such large appliances.
Before you try to use a voltage regulator or step-down transformer to power any appliance from a higher voltage service it is very important that you check:
- the rating-plate on the appliance to find out what current it draws at its rated voltage;
- the rating plate of any voltage regulator or transformer you are thinking of using to power it, to be sure it can handle the power (voltage times current) of the appliance.
For more information see the answers to the Related Questions shown below.
What is the voltage rating of a motor on a 3 phase 4 wire 277V lighting circuit?
If the motor is a three phase the most likely voltage the motor operates on will be 480 volts.
How star delta helping motor from overheat?
star delta motors start as a Y for 3 phase so the windings that normally see 480 volts see 277V a relay switches to delta then it runs as a normal delta motor the reduces the starting current by about 60% for 3 phase
What should be the primisable voltage between neutral and earth in a three phase system?
It is the line to line voltage divided by 1.73. 600V / 1.73 = 347V 480V / 1.73 = 277V 380V / 1.73 = 220V 208V / 1.73 = 120V
How do you get 277 volts from a 480 volt line?
All three phase four wire systems have the ability to produce a voltage to ground or neutral. Take any phase voltage be it primary or secondary and divide it by the sq. root of 3 which equals (1.73) and you will obtain the phase to ground or neutral voltage. The ground and neutral should be of the same potential and when talking about electrical installations these two words get interchanged quite often. Some three phase secondary voltages are 208, 480 and 600 volts. Electricians will talk about voltages of 120/208, 277/480 and 347/600. The first number is the phase to neutral voltage and the second number is the phase to phase voltage.
How do you obtain 277 volts single phase from a three phase 480?
277 volts is the phase to neutral voltage on a 480V 3-phase system. There is really no such thing as 277V 2-phase. Can you convert 277/480V 3-phase utility power to 120/240V single phase? Sure, but it will be expensive for any reasonable amount of power. You will need three transformers with 480:120 ratios. The primaries are each fed 480V A-B, B-C, and C-A. The three secondaries are connected in what is called a zig-zag configuration. The output will be 120/240V. This is rarely to never done with utility power using transformers, but it is routinely done on generators to obtain single-phase power when only a 3-phase generator is available. The generator must be reconnectable, that is, the three (sometimes six)windings must not be connected internally. One drawback is you can only load such a system to 66% of its rated power. So a 60KW 3-phase generator reconnected in a zig-zag configuration can only supply 40KW of single-phase power. But at least you don't need any transformers! Look at a generator manufacturer's website (Marathon has a good one). They have technical data on these types of arrangements. So while it is theoretically possible, its not really practical unless you are talking about a generator.
What's wrong with a 240V outlet that tests at 277V?
A 240V outlet testing at 277V indicates an overvoltage issue. This could be due to a problem with the outlet wiring, poor electrical connections, or issues with the voltage supply. It is important to address this promptly to prevent damage to appliances or potential safety hazards.
Can you lower 277v to 240v?
Yes, you can lower the voltage from 277V to 240V using a transformer. A transformer can step down the voltage while maintaining the same frequency. Make sure to select the appropriate transformer with the correct voltage rating for the input and output you need.
Can SJ 300V rated wire be used for 277v light?
No, SJ type wire is not rated for 277V application. This wire is typically designed for lower voltage applications such as 120V or 240V. It is important to use wire with the appropriate voltage rating to ensure safety and compliance with electrical codes and standards.
Will a bulb rated at 277V work in a fixture that is 240V?
Yes, it will just not be quite as bright as it would be on the higher voltage circuit. You will see very little difference in the luminance.
What is low voltage transmission?
In the supply industry it refers to circuits of below 1000 volts. Common voltages used are 120v, 208v, 230v, 240v, 277v, 400v, 415v, 480v.
Is 240 vac compatible with 208-277 vac?
Yes, a device rated for 240V AC will generally work with a voltage range of 208-277V AC. However, it's always best to check the specific device's tolerance range to ensure proper compatibility and safe operation.
Why use 277v light fixtures instead of 110v light fixtures?
277v light fixtures are more efficient to operate and less expensive to install than a 110v fixture of identical wattage. 277v light fixtures are typically installed when 480V 3 Phase primary electric service supplies a commercial or industrial facility. 277v lighting circuits are single phase circuits using one of the 480v primary phases (A,B & C) to Neutral. The higher voltage allows more fixtures per circuit using smaller conductors and longer runs typically required in warehouse lighting applications. ( Amps = Watts/Volts: 400W/277V Fixture = 1.4 Amps, 400W/110V fixture = 3.6 Amps) With 480V 3 Phase primary service, 110V Single Phase power is created using a Step-down transformer. The voltage transformation process consumes power (kWh) and the 277V fixture will consume less kWh than a 110V fixture if identical wattage, especially in fixtures with ballasts such as fluorescent or High Intensity Discharge (HID), like Sodium, Metal Halide or Mercury Vapor.
Where does 277v power used in America?
It is used in Industrial lighting.
How do I connect a single pole 220v switch to a 3 wire 220v motor using 2 hot wires plus 1 ground?
Is it a single pole switch, or a (220)240v switch? A 240v switch is a double pole switch. It has 4 screws and disconnects both hot sources simultaneously.If it's a single pole 120v/277v switch, that just means you can use it on 120v or 277v circuits. If it's not a double pole switch with 4 screws, it's not the right one. Get a 240v double pole switch for this. You can usually find these at home improvement stores.When you state that the motor is a "three wire" make sure that the phasing is correct and you are not trying to connect up a three phase motor.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-energizedIF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
Can you plug a 250V appliance in a 220V outlet?
Shouldn't be a problem. The 250V is likely a maximum rating and it is designed for 220-240 V service. Just make sure the current draw is less than the circuit breaker rating.Another AnswerIf you are referring to a European residential service, then you should be aware that the nominal voltage is 230 V, not 220 V, and there are no such things as 250-V appliances. An appliance's rated voltage will always match the nominal voltage of the supply they are designed to operate from.But you should be aware that 230 V is a 'nominal', or 'named', value -the actual value is allowed to increase by 10% -in other words, it can be up to 23 V higher than its nominal value. This means that you can expect a 230-V supply to vary up to 253 V.
Wiring diagram for 277 v ballast?
A wiring diagram for a 277V ballast typically involves connecting the incoming 277V power supply to the ballast, and then connecting the ballast to the light fixture. Make sure to follow the specific wiring instructions provided by the manufacturer of the ballast to ensure proper installation and to maintain safety standards. If unsure, it's recommended to consult a professional electrician.
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.
