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Why Does My Neutral Wire Have Voltage. When this NEUTRAL voltage is measured with reference to the GROUND this is referred to as an N-G Voltage. Neutral wire is also not protected by a breaker or fuse and if it fails the results can be unpredictable. Causes of Neutral-to-Ground Voltage and Proper Remediation Methods Vincent P. If the neutral is disconnected anywhere between the light bulb and the panel then the neutral from the light to the point of the break in the neutral will become hot and the device will be unpowered because no current will be flowing through it.
Why Is Main S Neutral Tied To Earth Electrical Engineering Stack Exchange From electronics.stackexchange.com
Jan 10 2009 6 monkey said. He argues that there is no voltage on the neutral side of a 120 load. Current - yes voltage - no. You most likely have an open somewhere else down stream towards the main panel of the non working receptacle. There shouldnt be voltage on the neutral wire with respect to ground copper. But be careful this obviously indicates that you have not killed the power to the switch youre working on.
A 120 volt reading will be noticed if voltage tester leads are placed between either two hot wires or two neutral wire when the circuit is on and under load.
I am having this discussion with a co worker. The reality is a little different. Reason it is against code to connect two neutrals from two separate in-phase circuits is that you can overload the neutral and increase the risk of a fire as stated by pcboss 14 AWG wire can only handle so much current. In this case I do not know what it would do to your symptoms. Apr 18 2012 10 Is my illustration correct. But be careful this obviously indicates that you have not killed the power to the switch youre working on.
Source: quora.com
You most likely have an open somewhere else down stream towards the main panel of the non working receptacle. As you will see neutral and ground wires do have some similarities but lets debunk some myths and get a clear understanding of why each of these two wires is needed and how they differ. Its recommended that you always seek the assistance of a licensed electrician when issues arise concerning electrical wiring. When this NEUTRAL voltage is measured with reference to the GROUND this is referred to as an N-G Voltage. Youre here simply measuring the voltage drop across it.
Source: quora.com
Jan 10 2009 6 monkey said. The resistance in the wire will cause a voltage drop along the NEUTRAL wire. I have found voltage like you describe once at an outlet it was feeding back through a ceiling light because someone had used the neutral through the light switch to turn the light on and not the hot wire. Sales EngineerAMETEK Electronic Systems Protection. Neutral wire is also not protected by a breaker or fuse and if it fails the results can be unpredictable.
Source: youtube.com
Youre here simply measuring the voltage drop across it. Signs of A Faulty Neutral Wire. Therefore if this wire has voltage that means its doing its job. Apr 18 2012 10 Is my illustration correct. You have wires which have some resistance and you have current going through them.
Source: electronics.stackexchange.com
If the neutral is disconnected anywhere between the light bulb and the panel then the neutral from the light to the point of the break in the neutral will become hot and the device will be unpowered because no current will be flowing through it. There shouldnt be voltage on the neutral wire with respect to ground copper. Therefore if this wire has voltage that means its doing its job. You most likely have an open somewhere else down stream towards the main panel of the non working receptacle. The answer ront gave about the phantom voltage esentially means you really have no voltage on the neutral wire.
Source: diy.stackexchange.com
Sales EngineerAMETEK Electronic Systems Protection. In this case I do not know what it would do to your symptoms. If the Black and White wires have the same Amps and we can assume that they have the same resistance. This article is based on research and sources are cited. Therefore if this wire has voltage that means its doing its job.
Source: electronics.stackexchange.com
As you will see neutral and ground wires do have some similarities but lets debunk some myths and get a clear understanding of why each of these two wires is needed and how they differ. In this case I do not know what it would do to your symptoms. Signs of A Faulty Neutral Wire. This should make the neutral voltage disappear. The hot black wires were still connected and the breaker was back on but without the neutral path the light wont work and the neutral ahead of that open splice will have power on it the same as the hot wire.
Source: electronics.stackexchange.com
If the Black and White wires have the same Amps and we can assume that they have the same resistance. Look for a disconnected neutral. Its recommended that you always seek the assistance of a licensed electrician when issues arise concerning electrical wiring. This is part of why the neutral wire can be so dangerous as a 120 volt circuit it carries as much current as the hot. You have wires which have some resistance and you have current going through them.
Source: diy.stackexchange.com
There shouldnt be voltage on the neutral wire with respect to ground copper. There shouldnt be voltage on the neutral wire with respect to ground copper. The voltage you are seeing on the neutral wire is conducting through that other load from the hot. Apr 18 2012 10 Is my illustration correct. When this NEUTRAL voltage is measured with reference to the GROUND this is referred to as an N-G Voltage.
Source: quora.com
A 120 volt reading will be noticed if voltage tester leads are placed between either two hot wires or two neutral wire when the circuit is on and under load. If the Black and White wires have the same Amps and we can assume that they have the same resistance. If the power was turned on to the light bulb the light bulb would not light up however I will get a 120 volt reading on my tester because the tester has been placed in the middle of the neutral wire. Look for a disconnected neutral. Try disconnectingturning off all other loads on that circuit.
Source: theengineeringmindset.com
On the other hand we have current going through the neutral wire and its acting as a resistor since it has some low resistance. It was a long time ago that it happened yet it was difficult to find so I remembered most of the details This house also had three way switches connected that way which caused voltage. Signs of A Faulty Neutral Wire. Apr 18 2012 9 why do they earth it like that. Even when things are working properly when an appliance uses both 240V and 120V the Neutral will have a small AC voltage on it due to the IR drop of the wire carrying the imbalance current.
Source: quora.com
Reason it is against code to connect two neutrals from two separate in-phase circuits is that you can overload the neutral and increase the risk of a fire as stated by pcboss 14 AWG wire can only handle so much current. The resistance in the wire will cause a voltage drop along the NEUTRAL wire. Keep in mind however that even though the neutral wire might be connected to earth this doesnt mean that it is actually at earth potential because a return current might be flowing in the neutral wire and due to the resistance in the wire this will cause a voltage at your end of the neutral wire. Signs of A Faulty Neutral Wire. I am having this discussion with a co worker.
Source: electronics.stackexchange.com
It was a long time ago that it happened yet it was difficult to find so I remembered most of the details This house also had three way switches connected that way which caused voltage. The voltage you are seeing on the neutral wire is conducting through that other load from the hot. It could be at the last WORKING one or at the. Jan 10 2009 6 monkey said. If a neutral carries voltage that usually means in reference to ground.
Source: ecmweb.com
Keep in mind however that even though the neutral wire might be connected to earth this doesnt mean that it is actually at earth potential because a return current might be flowing in the neutral wire and due to the resistance in the wire this will cause a voltage at your end of the neutral wire. If a neutral carries voltage that usually means in reference to ground. This article is based on research and sources are cited. Current - yes voltage - no. The hot black wires were still connected and the breaker was back on but without the neutral path the light wont work and the neutral ahead of that open splice will have power on it the same as the hot wire.
Source: electronics.stackexchange.com
I have found voltage like you describe once at an outlet it was feeding back through a ceiling light because someone had used the neutral through the light switch to turn the light on and not the hot wire. Current - yes voltage - no. Sales EngineerAMETEK Electronic Systems Protection. The answer ront gave about the phantom voltage esentially means you really have no voltage on the neutral wire. If you measure the voltage between any two points on a superconducting wire you will measure zero volts no matter how much current is flowing but the neutral wires in the power grid are not superconductors.
Source: quora.com
With the switch on the power travels through the load in this case a light bulb. As you will see neutral and ground wires do have some similarities but lets debunk some myths and get a clear understanding of why each of these two wires is needed and how they differ. The reality is a little different. You most likely have an open somewhere else down stream towards the main panel of the non working receptacle. There shouldnt be voltage on the neutral wire with respect to ground copper.
Source: quora.com
As you will see neutral and ground wires do have some similarities but lets debunk some myths and get a clear understanding of why each of these two wires is needed and how they differ. In this case I do not know what it would do to your symptoms. So if you measure say 120 Volts AC from Neutral to ground this is a very bad thing then the device on that electrical circuit will measure 0 volts from the phase conduct. Keep in mind however that even though the neutral wire might be connected to earth this doesnt mean that it is actually at earth potential because a return current might be flowing in the neutral wire and due to the resistance in the wire this will cause a voltage at your end of the neutral wire. This is part of why the neutral wire can be so dangerous as a 120 volt circuit it carries as much current as the hot.
Source: electronics.stackexchange.com
Apr 18 2012 10 Is my illustration correct. Not safe at all. The neutral is earthed at the generator so neutral cannot have a voltage to earth. But when things go bad - say for some reason Neutral opens up due to a flaky connection - you will have full 120V on the chassis. The resistance in the wire will cause a voltage drop along the NEUTRAL wire.
Source: eetimes.com
With the switch on the power travels through the load in this case a light bulb. Then there must be the same voltage. Apr 18 2012 10 Is my illustration correct. In this case I do not know what it would do to your symptoms. Usually there should be no current going through the ground wire so voltage drop across it is zero and you get zero volts.
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