# How do you fix the voltage phase to phase and phase to neutral?

If, by 'fix', you mean 'establish' or 'standardise', then for a
three-phase, four-wire, system, the 'line-to-line' (*not*
'phase-to-phase'!) voltage will be 1.732 times the
'line-to-neutral' (*not* 'phase-to-neutral'!) voltage.

### If in the three phase connection phase to phase voltage is 400v what will be the phase neutral voltage?

The formula to use is, phase voltage /1.73 = phase to neutral (ground) voltage. Comment There is no such thing as a 'phase to phase', or 'phase to neutral' voltage. The correct terms are 'line to line' and 'line to neutral'. So the above answer should read: line voltage/1.73 = line to neutral voltage = phase voltage.

### What is a line to line voltage?

In a 3 phase system, the voltage measured between any two phase is called line to line voltage. And the voltage measured between line to neutral is called phase to neutral (line to neutral) voltage. Answer There is no such thing as a 'phase-to-phase' or a 'phase-to-neutral' voltage. The correct terms are 'line-to-line' and 'line-to-neutral'. The voltage between any two line conductors is called a line voltage. In a three-phase, three-wire, system, the line voltage…

### What is the relation line voltage to phase voltage in star connection?

Phase to phase voltage is 1.732 (the square root of 3) times the phase to star point (neutral) line voltage. e.g. if the line voltage is 220V phase voltage = 1.732x220 = 380V (approx) Additional Answer You might also like to know that the line voltage leads the phase voltage by 30 electrical degrees. And, incidentally, the correct expressions are 'line-to-line' not 'phase-to-phase', and 'line-to-neutral' not 'phase-to-neutral' (think about it, a line voltage is measured…

### Is 13.8kV phase to phase voltage?

There is no such thing as a 'phase-to-phase' voltage; the correct term is 'line-to-line' voltage. Whenever you mention a value of voltage for a three phase system, it is considered to be a line-to-line voltage unless it is stated clearly that this is phase voltage (line to neutral) voltage. (The reason that there is no such thing as a 'phase-to-phase' voltage is because phases exist between, or 'across', line conductors or between a line conductor…

### What is the voltage in a three phase electrical supplies?

The line-to-line voltage (line voltage) is the square-root of 3 higher than the line-to-neutral (phase voltage) voltage. So, if the phase voltage is 220 V, then the line voltage must be 381 V. <<>> Common North American three phase voltages are 120/208, 277/480 and 347/600. The sq. root of three is 1.73. By applying the method in the first answer's formula - 120 (phase to neutral or ground) volts x 1.73 = 208 (phase to…

### What is the Phase to neutral voltage on a 400 volt 3 phase power supply?

The line-to-neutral (not 'phase-to-neutral'!) voltage on a 400V 3-Phase wye-connected system is 230V. Line voltage is the voltage as measured between any two (2) line conductors (hence its name!). Line voltage is often referred to as the 'line-to-line voltage'. Phase voltage is the voltage as measured between any single line and neutral. Phase voltage is often referred to as a 'line-to-neutral' voltage. "400V" on a 400V 3-Phase wye-connected power supply indicates its line voltage. Line…

### Why you are provide neutral in electrical system?

A neutral is used on three phase systems to supply two sets of voltages from one connection. In a wye (star) connection you can connect to get phase to phase voltage. From the same type of connection you can connect to a phase to ground (neutral). A common US voltage is 480/277 volts. The second voltage is the sq rt. of 3 for 3 phase. This equals 1.73. 1.73 divided into the phase to phase…

### What is difference between phase and neutral?

In electrical terminology the word "phase" refers to a type of system. There are single phase systems and three phase systems. The electrical term "neutral" refers to a conductor that carries the unbalanced current. In single-phase systems, the conductor is used for a return current path. Single phase electric power refers to the distribution of electric power using a system in which the voltage is taken from one phase of a three phase source. Single…

### How do you wire a three phase four wire generator for single phase output?

In a three phase four wire system - voltage between any one phase and the neutral is single phase. Hence the single phase equipment or load between any one phase and the neutral. Another Answer A single-phase load can be connected either between any line conductor and the neutral conductor, or between any pair of line conductors. The choice is dependent on the voltage rating of the load, which must match either the phase voltage…

### How do you get 277 volts from a three phase circuit?

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…

### How does a 3-phase 115 volt power supply measure 200 volts in-between each phase?

Three phases are: 115 volts @ 0 degrees 115 volts @ 120 degrees 115 volts @ -120 degrees Just for comparison purposes, phase to neutral voltage is: (Phase) - (neutral voltage) = (Phase) - (0) = Phase voltage So phase to phase voltage is: (Phase 1) - (Phase 2) = (Phase 1) * sqrt(3) = (115) * 1.732 = 208 volts.

### How do you reduce neutral to earth voltage in three phase system?

It is done by connecting the neutral to earth at the transformer that produces the three-phase supply. If the three phase wire supply equal currents, there is no current in the neutral wire and its whole length stays at earth potential, but if there is current in the neutral it produces a small voltage on the neutral at places away from the transformer.

### What is a three phase transformer?

Three Phase transformers have three windings. If connected in Delta, it will have R Y B phase winding, voltage between RY, YB and BR. Phase voltage and line voltage are same. If connected in Star, there will be a neutral as well with RYB. Line voltage and Phase voltage are different. Line voltage = 1.73 x Phase voltage.

### What is three phase and single phase?

Three phase system has three cables indicated by R Y and B phase. Typical voltage be 440 volts between the phases. This voltage level depends on the region. Many different countries have adopted different voltage levels. Single phase means two wires - one phase and a neutral. Phase to neutral voltage would be 230 volts. Again this value depends the region or country.

### What is the difference between line voltage and phase voltage?

Line voltages are measured between any pair of line conductors, whereas phase voltages are measured across any individual phase. For a three-phase, three-wire, system, the line voltage is numerically equal to the phase voltage, and both are measured between any pair of line conductors. For a three-phase, four-wire, system, the line voltage is 1.732 times the phase voltage, with the line voltage measured between any pair of line conductors, and the phase voltage measured between…

### Can you get 230 single phase from 230 three phase?

In Europe, low-voltage, three-phase, systems are four-wire systems, comprising three line conductors and a neutral conductor. The voltage measured between any two line conductors is termed a 'line voltage', and is 400 V. The voltage measured between any line conductor and the neutral conductor is termed a 'phase voltage' and is 230 V. For a three-phase, four-wire, system, the line voltage is always 1.732 times larger than the phase voltage.

### What is the phase to phase voltage on a 208 3 phase panel?

Phase to phase voltage on a 3 phase 208 volt panel is 208 volts. From each of the three phase legs to the starpoint neutral the voltage is 120 volts. Correction to the above answer. phse to phase means the line to line voltage. phase voltage is another thing. phase to phase voltage is equal to root 3 times phase voltage. PHASE TO PHASE V = 1.73 * PHASE V The correct term is 'line-to-line'…

### 230V line to line a single phase?

Yes. 230V line to line is considered single phase power. The 115v half part of that is called split phase. It should not be called two phase, as it is one phase that has been center tapped and grounded at the neutral point - it is still one phase power. Answer 230 V is the standard nominal voltage for residences in Europe. 230 V is the line-to-neutral voltage (phase voltage). Low-voltage distribution is by three-phase…

### How do you calculate three phase transformer turns ratio?

By determining the transformer's primary and secondary phase voltages. The ratio of the primary phase voltage to the secondary phase voltage will be practically the same as its turns ratio. For example, in the case of a delta/star connected transformer, the primary phase voltage will be its primary line-to-line voltage; it's secondary phase voltage will be its secondary line-to-neutral voltage.

### What is line voltage in star connection?

A star-connection is associated with a three-phase, four-wire, system which comprises three line conductors and a neutral conductor. The voltage between any two line conductors is called a line voltage, whereas the voltage between any line conductor and the neutral conductor is called a phase voltage. For a balanced system, the line voltage is 1.732 time the phase voltage. So, when a 400/230 V system is being discussed, the line voltage is 400 V and…

### Why is phase voltage not twice line voltage?

Line to line voltage is not the same as line to neutral voltage because line voltages are 120 degrees apart. They are related by: Line to neutral voltage * tan (120 degrees) = Line to neutral voltage * 1.73. Additional Comment For delta-connected systems, the line voltage is the same as the phase voltage. For wye-connected systems, the line voltage is larger than the phase voltage by a factor of 1.732. The reason for this…

### Why 380 volts line to line if connect line to neutral is 220 volts?

A voltage of 380 volts is a three phase voltage. On a three phase four wire system, each phase leg to neutral (grounded) will give you 220 volts. This voltage is obtained by dividing the phase voltage by 1.73, as the phase legs are generated 120 degrees from each other. Square root of three is 1.73 divided into 380 equals 220 volts.

### Why is it stated - 3 phase 440 VAC when one phase voltage is 220 VAC?

In three-phase there are three live wires and a neutral. The voltage of a three-phase system is always quoted as the live-to-live voltage, and the voltage from one live wire to neutral is 57.7% of that. A 440 v 3-ph system has 254 volts between live and neutral. <<>> The question statement is not correct. Two legs from a three phase three wire 440 volt system will still be 440 but classed a single phase…