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What is the voltage between neutral and earth if neutral is broken?
Wiki User
∙ 6y ago
Normally, it is zero.
Except in very special cases, the neutral and ground (earth) conductors in a building are tied together at one point in the system, so ideally the voltage difference would be zero. The reason that it might not be zero is there is current flowing in the neutral and, thus, voltage drop in the neutral conductor. Since the ground conductor normally never has current flow (unless there is a fault), there will be a difference in voltage equal to the voltage drop across the neutral conductor, which varies with load (current).
It should be 0V , but as per our earth pit maintaining that voltage will be varied even also not exceed 5V.
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoIn North America common phase to phase voltages are, 208 volts, 480 volts and 600 volts. In a grounded Y (star) connection, when 3 Ph 208 volts is the system voltage you get 120 volts to ground, when 3 Ph 480 volts is the system voltage you get 277 volts to ground and when 3 Ph 600 volts is the system voltage you get 347 volts to ground. These voltages are obtained by dividing the phase voltages by 1.73. 1.73 is the figure used because the phases are generated 120 degrees out of phase.
Additional Answer
Although widely-used in the field, the term 'phase to phase' is actually incorrect. The correct term is 'line to line', as the three conductors supplying a three-phase load are called 'lines' not 'phases'. A 'phase' is connected between lines. So, the above answer should read: 'In North America, common line to line voltages are 208 V... etc.'
So your question should really read: 'What is the voltage between earth and a line?'
Wiki User
∙ 13y agoI think the voltage should not be more than 2 volts or so
Wiki User
∙ 6y agoIt will be equivalant to phase voltage
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Why neutral have zero voltage?
Your question should read, 'Why does a neutral have zero potential?' 'Voltage' means 'potential difference', and you cannot have a potential difference at a single point. A neutral doesn't necessarily have zero potential although it is connected to earth (ground). This is because the potential of earth isn't literally zero; it's just considered to be zero, in the same way that sea level is considered to be zero in terms of height. Furthermore, there is often a voltage drop between the neutral and earth -in which case, the potential of the neutral can be several volts higher than the potential of earth.
Why there is zero volt across neutral earth of isolation transformer?
Geez, because it is just that; A NEUTRAL EARTH, there should be equal potential on each side, therefore no current flow, and no voltage.
Why neutral is earthed?
Neutral earth is very necessary for observe the unbalaced laod of the 3 phase system. it is also useful for single phase supply and in lighting purpose. neutral earth is also earthed the short ciruit fauly current , which is flowing through neutral. this type it is very essencial for protection and safety purpose.AnswerThere are a number of reasons why the neutral of a supply is earthed (grounded). The first reason is to protect the low-voltage secondary side of the distribution tranformer in the event of a short circuit from the high-voltage secondary side (it will cause the protection on the high-voltage side to disconnect the transformer). The second reason is to establish a datum point for potentials measured on the secondary side of the tranformers -in particular, if the star-point of a three-phase transformer is not earthed, then an unbalanced load will result in unbalanced supply phase voltages, and a potential-difference between neutral and earth -both undesirable and dangerous.
What is meant by neutral grounding reactor?
Neutral-earthing reactors or Neutral grounding reactors are connected between the neutral of a power system and earth to limit the line-to-earth current to a desired value under system earth fault conditions.
How is the neutral point in a star connection created?
In a distribution transformer's star-connected secondary, the common point of connection is called the 'star point' and is connected to earth. The star point then provides the neutral connection for the transformer secondary, providing a return path for any unbalanced currents due to an unbalanced three-phase load.This arrangement provides a four-wire distribution system, comprising three line conductors and one neutral conductor (in addition, there are various methods of providing an earth connection to consumers). The line-to-line voltage is called a line voltage (in the UK, 400 V), while a line-to-neutral voltage is called a phase voltage (in the UK, 230 V). The line voltage being 1.732 x phase voltage.
Voltage across Neutral and earth for a 3 phase auto transformer?
A grounded neutral will be at earth potential. A floating neutral will be at a voltage dependent upon the voltage imbalance between phases, and the design of the transformer.
What is voltage between earth and line?
In a typical residential situation there is 220 to 240 volts between the two hot wires that are typically red and black and 110 to 120 volts between neutral and either black or red. The voltage between neutral and earth should be zero.
Why would you get half voltage between live and neutral?
You can measure a small voltage between earth and neutral, even if the neutral is grounded to earth, because the neutral conductor acts as an antenna picking up electromagnetic radiation in the atmosphere. -------------------------- If the above answer were true, the earth conductor would also act as an antenna. But the real answer is, if you read ANY voltage between the neutral and earth, the neutral is broken somewhere between where you are measuring and the panel or not properly bonded in the panel. Call a competent electrician to repair the problem.
What is the reason when you read voltage between neutral and earth?
It usually means the neutral is broken somewhere between where you are measuring and the panel. If you are measuring this in the panel, it means the panel is not properly bonded and you need to call a competent electrician to fix the problem.
Can there be 230 volt potential drop in both neutral and live socket practically?
This question is not quite clear but I will try it somehow. The voltage drop between the live and neutral, and live and earth will both be 230v, but the voltage drop between the neutral and earth is almost zero due to the fact that the neutral and earth is basically one conductor split.
Why we measure voltage between neutral to earth?
To ensure that it complies with the relevant electrical wiring regulations.
Why voltage at neutral in ckt is zero?
You really should be asking why the potential of neutral is zero. 'Voltage' means 'potential difference' which, by definition, cannot exist at at point. The reason is that the neutral conductor is earthed (grounded), and earth is, by general consent, considered to have a potential of zero volts. In practise, however, there is usually a small voltage drop between the neutral and earth, so it would be more accurate to say that the neutral's potential is close to zero.
Why neutral have zero voltage?
Your question should read, 'Why does a neutral have zero potential?' 'Voltage' means 'potential difference', and you cannot have a potential difference at a single point. A neutral doesn't necessarily have zero potential although it is connected to earth (ground). This is because the potential of earth isn't literally zero; it's just considered to be zero, in the same way that sea level is considered to be zero in terms of height. Furthermore, there is often a voltage drop between the neutral and earth -in which case, the potential of the neutral can be several volts higher than the potential of earth.
How do I test my house's earthing?
Take 240V Lamp first check the voltage at Phase w.r.t neutral if lamp glows it means present voltage is OK now check the voltage w.r.t earth i.e. between phase & Earth point then lamp will glow. Now check between Neutral & Earthing Lamp should not glow. If these conditions are fulfill then your Earthing is OK.
What is the total of a phase to earth voltage on 11000 volts?
An 11,000 volt three-phase supply has a voltage of 6351 from live to neutral, when there is a neutral wire.
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.
How do you reduce neutral and earth voltage up to 0 volts?
If you are reading a voltage it is the drop across the resistance to ground. To get rid of the voltage get the resistance lower. This can be accomplished by installing more ground rods to the grounding system. Utility companies usually like 3 ohms to ground or less.
