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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.
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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 else can I help you with?
What is the meaning of single phase and three phase voltage and what actually does it represent?
They are both types of AC circuit. A single-phase supply is carried on two wires, a live and a neutral. The neutral is different from the live because it is grounded at the supply transformer. A three-phase normally has three live wires and a neutral, and it can be used for three separate single-phase supplies to adjoining properties for example, with each property connected from one live wire to the neutral. The three voltages are timed or 'phased' to peak one third of a cycle apart. If each property was drawing an identical current, the sum current in the common neutral sums to zero, and therefore the neutral has no current in it and therefore incurs no power losses. Thus the losses are half what they would be for three separate single-phase supplies each with its own neutral. If there were three hundred properties instead of three, the current in the three live wires would be nearly equal nearly all the time, and again the current in the common neutral would be near zero. This system allows power to be transmitted over distance using half the mass of wire.
Why half size of neutral conductor in 3.5 core cable?
In a 3.5 core cable, the neutral conductor carries less current compared to the phase conductors. By reducing the size of the neutral conductor to half, it helps balance the voltage drop and prevents overheating in the cable. This helps ensure the safety and efficiency of the electrical system.
Two 20K resistors R1 and R2 are in series across a 100 volt supply what would the voltage be across R1 if measured with a digital voltmeter with an internal resistance of 1M?
The voltage across R1 would be 50 volts. This is because the voltage divider rule states that the voltage across each resistor in a series circuit is proportional to its resistance relative to the total resistance in the circuit. In this case, since both resistors are the same (20K), the voltage across each resistor will be half of the total supply voltage.
Why neutral cross section is half the phase in three phase cable while it has to carry current of summation of all phase..?
The current carried by the neutral of a three phase four wire system is the un balanced current. If the three phase system was completely balanced on all three phases there would be no need for a neutral, eg a three phase motor. This neutral current will be less that the phase current so a reduction in the neutral size is allowed.
Why is there a high voltage line on 3 phase?
The high leg is a byproduct of another feature. It is not in and of itself useful. On a three phase delta transformer, one of the three windings (only one) is center tapped to create a neutral - from the nearest two phase legs to the center tap you get a half voltage which can be used for lighting. (typical arrangements are phase-to-phase = 240 volt, phase to neutral = 120 volts) From the third, furthest phase leg you get the unusable high leg. (208V)
How does an electric utility ground electricity delivered to your home?
Electricity is delivered to homes through transformers. The center of the transformer output winding is connected to ground. This center tap is then connected to the home power panel as the neutral lead. The voltage between the grounded neutral and either of the "hot" legs is half the voltage between the legs. In the US and Canada, the full voltage between the legs is 240V and between either leg and neutral is 120V.
What is 3.5 core cable?
it means 3conductors(ie RYB) and half neutral ie size of neutral would be half size of other conductors...
In ac single phase circuits what is the neutral for?
The neutral in single phase AC circuits is used as the common power return conductor for half phase operation. In a typical (US/Canada) 120/240 split phase system, generally used in residential applications, the voltage between neutral and either of the two hot conductors is 120 VAC, and the voltage between the two hot conductors is 240 VAC. Neutral is also grounded at the distribution panel, as well as at the utility distribution transformer, in order to limit the voltage of any conductor relative to ground, and also to be able to detect ground faults by sensing imbalance between neutral and hot currents. Note that this is not called two phase power. It is single phase, or split phase, and it comes from one center tapped transformer winding. The center tap is neutral.
What is the voltage value between one leg of a 208 volt system and the ground wire?
Well if you are talking about phases, it would be half of 208V.
Why we kept VOLTAGE collector to emitter half of voltage vcc?
We bias the common emitter amplifier to have a collector-emitter voltage of one half of Vcc in order to set the operating point halfway between the two extremes.
What are the disadvantages of half wave recrifier?
A half wave rectifier does not make a stable voltage. A single phase half wave creates a "bumpy road" where voltage modulates between sine wave maximum and zero. A three phase half wave will create a more stable, but ultimately "unclean", voltage.
What is the peak value of the input to a half wave rectifier if the half wave rectifier is 10V?
In this case, the peak voltage, which is half the peak to peak voltage, is 100 volts. Additionally, the half-wave rectifier will only provide an output for half the input cycle. In the case of a full wave rectifier, the RMS output voltage would be about 0.707 times the value of the peak voltage (100 volts), which would be about 70.7 volts. But with the output operating only half the time (because of the half wave rectification), the average output voltage will be half the 70.7 volts, or about 35.35 volts RMS.
Can you replace two CR2016 batteries in a car key with one CR2032?
No. You would only have half the voltage required as they are the same voltage.
What is the difference between the positive clipper and negative clipper?
Positive clipper-the clipper which removes the positive half cycles of the input voltage, while the negative clipper the clipper which removes the negative half cycles of the input voltage.
What is the meaning of single phase and three phase voltage and what actually does it represent?
They are both types of AC circuit. A single-phase supply is carried on two wires, a live and a neutral. The neutral is different from the live because it is grounded at the supply transformer. A three-phase normally has three live wires and a neutral, and it can be used for three separate single-phase supplies to adjoining properties for example, with each property connected from one live wire to the neutral. The three voltages are timed or 'phased' to peak one third of a cycle apart. If each property was drawing an identical current, the sum current in the common neutral sums to zero, and therefore the neutral has no current in it and therefore incurs no power losses. Thus the losses are half what they would be for three separate single-phase supplies each with its own neutral. If there were three hundred properties instead of three, the current in the three live wires would be nearly equal nearly all the time, and again the current in the common neutral would be near zero. This system allows power to be transmitted over distance using half the mass of wire.
What type of voltage is passed trough a transformer?
Voltage doesn't 'pass through' anything! Voltage is another word for 'potential difference', and is measured between two points in a circuit. For a transformer to work, it's necessary to apply an a.c. voltage across the transformer's primary terminals.
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.Answer230 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, four-wire, system with a nominal line voltage of 400 V and a nominal phase voltage of 230 V.
