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There are buck-boost Transformers available that will do just that. I don't know about the buck-boost transformers, but most residential service is 110/220 single phase. The phase is split at the transformer that feeds the house from the power line. You will often see appliances marked with a voltage of 208/230 or something in that rang. So you should have single phase 110/220 volt already. Hope this helps, waterman@bluemarble.net. You cannot get 208V directly from residential service. 208V is usually found in 3 phase commercial/industrial supply. You can get 240V, as mentioned above, between the two hots of residential service. Check the ratings on your device to see if that will work, keeping in mind the device must be able to handle a minumum of 250VAC for that to work.
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∙ 16y ago
Wiki User
∙ 14y ago208v - 220v single phase power is used in your house for things like electric ovens and AC on your roof.
single-phase electric power refers to the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison. Single-phase distribution is used when loads are mostly lighting and heating, with few large electric motors. 208v is normally used for sensitive equipment.
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∙ 14y ago208 is single phase because there are only two conductors involved. There is only one way to look at them, one vs the other.
In a three phase system, there are three conductors (delta) or four conductors (wye).
Take the case of three conductors. Each phase is actually the relationship between two conductors, A-B, B-C, and C-A. Take any one away, and you are left with one phase, not two.
Take the case of four conductors. Each phase is the relationship between two conductors, just like before, except that one of those conductors is a common neutral. As a result, the three phases are A-N, B-N, and C-N. Take one away, and you have two phases, but the neutral is now unbalanced.
208 is a special case of a wye connection. Instead of neutral being the common secondary of three transformers, each with 240 available with respect to neutral, neutral is the center tap of one transformer, and there are three hot legs, A, B, and C. A and B are 120 volts away from neutral, and they are 240 volts away from each other.
Stop and think. Considering only the A/B transformer, this is the same as 120/240 split phase as used in residential power in the US and Canada.
Now, add the third phase, C. C is 240 volts away from A, and also 240 volts away from B. You can connect a three phase delta load across A, B, and C, and it will work just fine. You simply cannot use neutral for anything because it is not in the center of the phase triangle.
Do the math (vector math, that is) and you discover that C is 208 volts away from neutral. (120 times tangent 60 = 208) So, if you connect a load between C and Neutral, you get 208 volts.
Interestingly, this 208 phase is actually not in phase with any of the three primary phases AB, BC, or CA. It is halfway between A and B.
To understand this, go back to Fourier Analysis. The sum of two sine waves of the same frequency is simply another sine wave, though with a different amplitude. The phase angle of those two sine waves does not matter - you still get one sine wave out, therefore you get one phase on 208.
Now, does that mean you could have 208 three phase? Certainly. You would need to center tap the other two secondaries, BC and CA, and load the center taps against the opposing high "or wild", as its called phase. Of course, two of those three center taps could not be grounded, so it is not cost effective to do so.
This configuration, three phase 240, with one phase 120/240 split, and 208, is known as quadraplex, and is a cost effective solution to providing three phase power at the same time as traditional 120/240 split phase power, to a small business.
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∙ 11y ago120v/208v y 3phase gives 208 v between phases or 120v to neutral
any 2 hot wires give 208v single phase
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∙ 10y ago208 v 3-ph has 208 v between lines and 120 v from line to neutral, so a transformer is needed on the 120 v or 208 v supply to produce 220 v.
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∙ 13y agoYou would need to add a transformer.
Wiki User
∙ 12y agoYes.
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Yes
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How many volts is there in a single phase?
The number of Volts in a residential service drop in the US is either 120V 2 Wire, 120V-208V Network, or 120-240V 3 Wire. A 120-208V Network service is not single phase, but its 120V portion is.
How is it possible that a chicken rotisserie that uses 208v 3 phase can have a motor that uses 208v?
Two scenarios are that the motor could be a three phase motor. These three phase motors are manufactured in smaller sizes. The other scenario is that the motor is a 208/220 volt single phase motor. It will operate on 208 volts by taking two legs of the three phase supply for its operation.
What is 208 - 230 volt three phase?
In the United States, 208v can be either. It is generally the voltage supplied by a 120/208v 3 phase system. However, using 2 legs of this 3 phase system is called single phase. I won't go into the reasons for that but just understand that 208v can be either single phase or 3 phase.
Is 126 volts three phase?
126 volts sounds very close to a standard home voltage of 120 volts, which is single phase. 208v is a three phase voltage, and is the lowest I have seen. 240 is single phase (usually center tapped, so in your house you have +120, and -120 referenced to the neutral which provides the normal 240 for dryers, stoves, etc.).
How is a 380v 3-phase machine to a 208v simple phase outlet possible?
if you wound 3-phase on primary of transformer and secondary side we have to only one cable only such a way that it works as a step down transformer.AnswerYou cannot run a three-phase machine directly from a single-phase (which is what I assume you mean) supply. It won't start. The voltage difference is irrelevant.
What is average 208-230 voltage?
208V is one standard in the US for light commercial 3-phase power. It measures 208V phase to phase and 120V phase to neutral. 230 (or 240)V refers (in the US) to the common service supplied to residential. It is single-phase, with two hots and a neutral; 120-0-120. One hot and the neutral (120V) is used for receptacles and small appliances, both hots (240V) are used for large appliances, such as stoves, ovens, air conditioning, and water heater.
What is average 208 230 voltage?
208V is one standard in the US for light commercial 3-phase power. It measures 208V phase to phase and 120V phase to neutral. 230 (or 240)V refers (in the US) to the common service supplied to residential. It is single-phase, with two hots and a neutral; 120-0-120. One hot and the neutral (120V) is used for receptacles and small appliances, both hots (240V) are used for large appliances, such as stoves, ovens, air conditioning, and water heater.
What is the equivalent to135A single phase at three phase 208V?
135 A at 120 v single-phase is 16.2 kVA. With a 208 v three-phase supply you get three single-phase 120 v supplies, so the same kVA is produced with a balanced load of 45 amps on each phase.
How many volts is there in a single phase?
The number of Volts in a residential service drop in the US is either 120V 2 Wire, 120V-208V Network, or 120-240V 3 Wire. A 120-208V Network service is not single phase, but its 120V portion is.
How is it possible that a chicken rotisserie that uses 208v 3 phase can have a motor that uses 208v?
Two scenarios are that the motor could be a three phase motor. These three phase motors are manufactured in smaller sizes. The other scenario is that the motor is a 208/220 volt single phase motor. It will operate on 208 volts by taking two legs of the three phase supply for its operation.
What is 3 phase 208v?
It is a type of electricity supply that gives 120 v between each phase wire and neutral, that can be used for 120 v low-power circuits in a building.Yes 208 voltage is part of a three phase system. It is a three phase wye connection producing 120/280 voltages. L1 - L2, L2 - L3, L3 - L1 are the 208 voltage legs and L1 - N, L2 - N, L3 - N are the 120 volt legs.
If you are making your own device and you bring in 208 3 phase for part of your needs - how can you properly tap 110 single phase from it to operate other parts of your device?
Your incoming 208V 3 phase power supply will also need an incoming neutral of the same conductor size. Then any single pole breaker installed in the panel will have 110 volts to the neutral. That is you can run 208V 3 phase motor circuits from a three phase breakers in the panel and any number of 110V circuits from single pole breakers.
What is 208 - 230 volt three phase?
In the United States, 208v can be either. It is generally the voltage supplied by a 120/208v 3 phase system. However, using 2 legs of this 3 phase system is called single phase. I won't go into the reasons for that but just understand that 208v can be either single phase or 3 phase.
How can you get the 240 volt cut back to 208 volt without the use of a transformer?
Based on the numbers in your question, I assume you're in the US. If the 240V comes from a utility transformer feeding the building, you're pretty much stuck with what you've got. 208V normally comes from 208/120 three-phase service. If you have 240V, that means you have single-phase service. 208V single-phase wouldn't work, because the receptacles would end up with 104V instead of the required 120, so what you're really asking is can you get 3-phase, 208/120V service. If this is a home, almost certainly the answer will be no. If it is a small commercial building, then it may be possible, but the utility will probably make you foot the bill, and it will cost plenty. And transformers (3 of them) would be involved.
Is 126 volts three phase?
126 volts sounds very close to a standard home voltage of 120 volts, which is single phase. 208v is a three phase voltage, and is the lowest I have seen. 240 is single phase (usually center tapped, so in your house you have +120, and -120 referenced to the neutral which provides the normal 240 for dryers, stoves, etc.).
What is the kw input on a 50amp breaker with a 208v three phase electrical feed?
7200
How is a 380v 3-phase machine to a 208v simple phase outlet possible?
if you wound 3-phase on primary of transformer and secondary side we have to only one cable only such a way that it works as a step down transformer.AnswerYou cannot run a three-phase machine directly from a single-phase (which is what I assume you mean) supply. It won't start. The voltage difference is irrelevant.
