# What is the difference between line and phase voltage?

The three 'hot' conductors supplying electricity to a three-phase load are called LINES, not 'phases' (although unfortunately the term 'phase' is widely, but incorrectly, used in the field).

Phases exist between line and neutral in star, or wye, connected systems, and between lines in a delta, or mesh, connected system. Accordingly, the term 'phase to phase' is quite meaningless.

A line voltage, therefore, exists between any two lines.

For a star (wye) connected system, a phase voltage exists between any line and the neutral conductor. For a delta (mesh) system, a phase voltage is exactly the same as a line 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… Read More

### How do you calculate the voltage between a phase and ground?

There is no such thing as a 'phase-to-phase' voltage. The correct term is 'line-to-line' voltage or 'line voltage'. For a star (wye) connected system, the line voltage is 1.732 times the phase voltage, where the phase voltage is measured between any line and neutral.

### What is the difference between an electrical 3 phase delta connection and a star connection?

star connection like y whle delta connection like a triangle. in star connection there is adifference between line voltage and phase voltagewhi delta connection line voltage and phase voltage are same. in star connectin line voltage is always greater than phase voltage

### What is the main difference between star and delta connection for 3 phase machines?

The main difference between star and delta is that in star, the phase voltage is root 3 multiplied by the line voltage making the speed of the machine to run at low speed while in delta, the phase voltage is equal to the line voltage making the machine to run at high speed.

### Relation between phase and line voltage?

For a three-phase, three-wire, system, the line voltage and the phase voltage are numerically equal to each other, 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. The line voltage is measured between any pair of line conductors, whereas the phase voltage is measured between any line conductor and the neutral conductor.

### 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… Read More

### 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… Read More

### Relationship between line voltage and Phase voltage?

In a delta connection, the line voltage is equal to the phase voltage. In a star connection, the line voltage is 1.732 larger than the phase voltage.

### How do you measure line voltage vs phase voltage?

For a three-phase, four-wire, system, the line voltage is measured between any pair of line conductors, while the phase voltage is measured between any line conductor and the neutral conductor. For a three-phase, four-wire, system, the line voltage is numerically-equal to the phase voltage, and both are measured between any pair of line conductors.

### How many phase to phase voltage in 440 lines?

Let's get the terminology correct. A 'phase voltage' is measured across a phase, whereas a line voltage is measured between two lines. So there is no such thing as a 'phase to phase' voltage -it's a line to line voltage (hence the term 'line voltage').

### How match 2 phase line voltage between them?

To match 2 phase line voltage it has to be the same voltage.

### Why phase to phase voltage is 380?

let me clear difference between phase voltage and line voltage. phase voltage is measure line to neutral and line voltage is measure line to line. there is correct answer that 380 volt is sum of multiply of square root 3 to phase voltage 220 volt. phase volt line volt 220 volt x 1.732 = 381 volt 230 volt x 1.732 = 400 volt 240 volt x 1.732 = 415 volt M. Asif ALi

### What is the relationship between phase and line voltage in a 3 phase generator?

Phase voltage is sqrt(3) times the line voltage, that is 1.732 times. So for a 240 v line voltage the phase voltage is 416 v.

### What is the current difference in a 3 phase motor running continuously in star connection and delta connections?

The voltage difference between star and delta is 1.732, the square root of 3, or, going from delta to star, 1 over 1.732, which is 0.5774. That is the same as the current difference, neglecting motor efficiency at the two different operating voltages. The power difference between star and delta is 1.7322, or 3, and between delta and star is 0.57742, or 0.3333. <<>> In a wye connection, the line current is equal to the… Read More

### 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… Read More

### What is the line voltage between two lines?

the voltage between 1 line & phase =120v The voltage between 2 line =240

### Distance maintain between phase to phase?

is there a minimum distance between 480 volt phases. ANOTHER ANSWER There is no such thing as a 'phase-to-phase' voltage. The correct term is 'line-to-line', which is why that voltage is called a 'line voltage'. The distance between these line conductors depends on the value of the line voltage; the greater the line voltage, the greater this distance must be to prevent any flashover. These distances are specified in the utility company's standards or regulations.

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

For residential supplies, the nominal voltage between a line and neutral is 230 V (in Europe) or 120 V (in North America).

### Is transmission voltage a phase to phase voltage or a phase to ground voltage?

Phase to Phase voltage Correction to the above answer: There is no such thing as a 'phase-to-phase' or 'phase-to-ground' voltage. The correct terms are 'line-to-line' (or 'line voltage') and 'line-to-ground' (or 'phase voltage'). Transmission-line voltages are line-to-line (or 'line') voltages.

### What is phase voltage and line voltage?

The three 'hot' conductors supplying a three-phase system are called 'line conductors'. A line voltage is the voltage between any pair of line conductors. In a 'delta' connected system, phases are the loads connected between the three line conductors. So, for a delta-connected load, the phase voltages correspond to the line voltages. In a 'star' or 'wye' connected system, phases are the loads connected between the line conductors and a neutral conductor. So for a… Read More

### What is phase to phase voltage?

It is voltage between Line to Line , for example say line L1,L2 and L3.This is the voltage between L1 and L2, L1 and L3, L2 and L3 respectively. Answer There is no such thing as a 'phase-to-phase' voltage; the correct term (as indicated in the original answer) is 'line-to-line'. If you think about it, phases are connected either in delta or in wye -so how can there possible by voltages between phases!

### 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 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… Read More

### 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… Read More

### 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 power line voltage between phase and earth when the voltage between phase and neutral is 220 V and voltage between neutral and earth is 3V?

Phase and earth and phase and neutral voltages will both be 220 volts.

### What are line voltage and phase voltage?

The voltage in the middle of line and impartial is known as the stage voltage. where the voltage between two lines called the line 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.

### Why do you have voltage to ground but not voltage phase to phase?

There is phase to phase voltage in 3 phase system. Answer You don't get voltage 'phase-to-phase'; it's 'line-to-line'!

### How do you measure voltage in a 3 wire single phase system?

You can measure the potential difference between the two line conductors (L1 and L2), or the potential difference between either line conductor and the neutral conductor (N).

### 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… Read More

### How much voltage in phase to phase?

First of all, the correct term is 'line to line', not 'phase to phase'. The line to line voltage is called a line voltage, and its value depends on the electrical standards in your country, and the point in the electrical tranmission/distribution system where it is measured. In the UK, for example, its value could be between 400 kV (high-voltage transmission line) and 400 V (low-voltage distribution line).

### Difference between line transformation ratio and transformation phase ratio?

line transformation ratio would be the turns ratio (ie voltage ratio), while the phase transformation ratio is most probably the phase shift introduced by a 3 phase transformer.

### What is the difference between line to line voltage to line to ground voltage?

On a three phase wye connected system line to line voltages will be the voltages between the terminals L1 - L2, L2 - L3, L3 - L1. On a three phase wye connected system line to ground voltages will be the voltages between the terminals L1 - N, L2 - N, L3 - N. To calculate the line to ground voltage divide the line voltage by the square root of three which equals 1.73. An… Read More

### What is voltage between any ungrounded conductor and ground ona 208 volt three phase system?

The line-to-neutral voltage ('phase voltage) is the line-to-line voltage ('line voltage') divided by the square root of three. Thus in this case, it is about 120 V.

### What is meant by single phase?

Electricity supply systems are three-phase systems as, for any given load, they are more economical in terms of volume of copper, than a corresponding single-phase system. A three-phase system has three line conductors, whose potentials are displaced by 120 electrical degrees, so there is always a potential difference (termed a 'line voltage') between any pair of lines. Some three-phase sytems have four conductors -three line conductors and a neutral conductor, so, in additional to line… Read More

### Is a Line voltage understood to be any voltage?

The Line normally refers to the live wire in a single-phase system and the three live wire of a 3-phase system. In a 3-phase system the line voltage is usually quoted as the nominal voltage, and that is the voltage between any two of the live wires. The voltage between one of the lines and neutral is 1/sqrt(3) times less.

### How do connect no of 1phase lamp series connection in 3phase?

Your question is not clear. Are you asking how you can obtain a single-phase supply from a three-phase system? If so, then it depends on the type of three-phase supply and the voltage you require. For example, a three-phase, three-wire, system, single phase is obtained between any two line conductors. For a three-phase, four-wire, system, single phase is obtained either between any two line conductors, or between any line conductor and the neutral conductor. In… Read More

### Can you use phase voltage as a single phase?

A single phase supply can be obtained between any pair of line conductors or between a line conductor and a neutral conductor.

### Which has the higher voltage - phase or line?

In a three phase three wire system, the phase voltage and line voltage are one in the same just different terminology. In a three phase four wire system, the line voltage is higher than the line to ground voltage. Line to ground is, line voltage divided by 1.73 (square root of three). For example 480volts /1.73 = 277 volts. Answer It depends upon the configuration of the three-phase system. For a delta (or mesh) connected… Read More

### How 3 phase AC generator supplies 400 volts?

A 400/230-V three-phase generator hase three line terminals, together with a neutral terminal. The line voltage (i.e. the voltage between any pair of line terminals) is 400 V, while the phase voltage (i.e. the voltage between any line terminal and the neutral terminal) is 230 V.

### What is the voltage between each lead of a 480 volt three phase service?

Assuming this is a WYE connected system: (Most commercial/industrial services are) Your question answered it: 480 volts. The phase to phase voltage on this system is 480 volts and the phase to ground voltage is 277 volts. Answer The 'leads' you refer to are more-properly called 'lines', and the voltage between any pair is called a 'line voltage' (not a 'phase voltage', as stated in the original answer). The rated voltages of three-phase systems, regardless… Read More

### What is phase voltage and line voltage in star connection?

line voltage is 1.732 times of phase voltage

### What is the voltage on any 2 legs on a three phase system?

On 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… Read More

### What is difference between line current and line voltage?

In a three-phase system, a line voltage is the voltage measured between any pair of line conductors. The line current is the current flowing in any of the lines. Line voltages are usually numerically equal when measured between any pair of lines. Each line current, however, may be different if the load is unbalanced, or the same if the load is balanced. In a residence, the line voltage is the voltage between the incoming line… Read More

### Does a potential transformer measure phase voltage or line voltage?

It depends how they are connected. If they are connected between line conductors then they are measuring line voltages. If they are connected across phases then they are measuring phase voltages.

### Where the volatage is measured in the three phase systems?

there is 2 voltages can be measured line to line voltage and phase voltage (line to neutral) where line to line voltage in case of delta connection is equal to phase coltage while in star connection line to line voltage is root 3 of phase voltage

### Is transmission line voltage phase to phase?

Yes usually it would be phase to phase voltage because most transmission lines are set up in a delta configuration. This means that there is no neutral conductor to use as a reference. So any voltage would be measured with reference to another phase. Comment Let's get the terminology correct. The voltages between the three 'hot' lines of a three-phase, three- or four-wire, system are called 'line voltages' even though, in the case of a… Read More

### In a 208 Volt 3-phase power supply what is the voltage between each lead?

From line-to-line (any two of the three leads) voltage or 'line voltage', the voltage is 208 V. The line-to-neutral (one of the three leads and the neutral conductor), or 'phase voltage', is 120 V.

### 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… Read More