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Why the neutral line spark when touches the ground in the panel or other circuit?
Wiki User
∙ 11y ago
The neutral conductor, or "grounded conductor", takes the unbalanced current back to its origin if wired correctly. If it finds a ground path before it makes it back to the panel, it will take it. If you take a neutral off its path back to a panel, and happen to touch a grounded surface, such as a metal case, you will become the ground path. That being being said for safety's sake, I will continue. The neutral wire completes the circuit. A neutral wire unattached to a neutral bar is an extension of the "hot" wire, or ungrounded wire, and will spark if grounded. If that unattached neutral touched a different circuit of a different phase, then what ever was connected between the hot and neutral wires just went poof. I hope that helps a little.
Wiki User
∙ 11y ago
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What would cause 5 volts to be sensed at water supply pipe?
The water pipe is not properly grounded AND there is a ground fault or neutral imbalance in the house. Alternatively, there could be a neutral problem. In an ideally balanced house, the current on one hot leg balances the current on the other. This means that there is no current on neutral. In practice, there is some imbalance, and that common mode current does flow on neutral. If a circuit has a ground fault, the current return for that circuit is on ground, instead of neutral. That is wrong, and must be corrected. However - neutral and ground ARE connected together at the distribution panel. They are also connected at the street, so imbalance current could flow through ground instead of neutral. How much voltage is dependent on how much impedance. If there is a voltage at the house ground, and no ground fault or major imbalance, it calls into question the adequacy of the ground path, however, it is also possible that neutral is open, causing the imbalance current to flow through ground alone.
How does a neutral wire work?
Neutral wires are actually ground wires. They enable the circuit to be completed.
How does short circuit occur?
short circuit occurs when two wire which consist of one live and neutral wire are in contact with the main and the other end of the wire are touched each other short circuit occurs
What wire colors are the Neutral and the Ground or Earth wires?
In USA, Canada and other countries using a similar 60 Hz system:the Neutral wire is colored White or Commercial Graythe Ground wire is colored Green or is bare wireIn Europe and other world areas using a similar 50 Hz system:the Neutral wire is colored Bluethe Earth wire is colored Green and Yellow
What will happen if neutral and ground wire is shorted?
Nothing will happen if the neutral and ground wire is shorted. The electrical code makes it mandatory that the neutral and ground are brought together at a common point within the distribution panel. On a 120/240 volt distribution system the ground wire is terminated at the point where the service neutral terminated in the distribution panel. It is usually a double lug the neutral wire connecting into one hole and the ground wire connecting into the other hole. Through this lug assembly there is a machine screw that is inserted through the lug assembly and it screws into the metallic enclosure of the distribution panel. This action bonds the metal enclosure, neutral wire and ground wire bringing the point to a common potential of zero.
What is the purpose of the neutral conductor?
The purpose of neutral conductor is to carry the unbalanced load current. It is also a grounded conductor, which effectively places a limit on how much voltage could be present from hot to ground, a safety concern.
What would cause 5 volts to be sensed at water supply pipe?
The water pipe is not properly grounded AND there is a ground fault or neutral imbalance in the house. Alternatively, there could be a neutral problem. In an ideally balanced house, the current on one hot leg balances the current on the other. This means that there is no current on neutral. In practice, there is some imbalance, and that common mode current does flow on neutral. If a circuit has a ground fault, the current return for that circuit is on ground, instead of neutral. That is wrong, and must be corrected. However - neutral and ground ARE connected together at the distribution panel. They are also connected at the street, so imbalance current could flow through ground instead of neutral. How much voltage is dependent on how much impedance. If there is a voltage at the house ground, and no ground fault or major imbalance, it calls into question the adequacy of the ground path, however, it is also possible that neutral is open, causing the imbalance current to flow through ground alone.
What cause current on the neutral line in a three phase?
Current on neutral in a multi phase system is caused by imbalance between the phases. Question: Are you talking about neutral or ground? The two are very different. Although neutral is grounded, it is expected to be a current carrying conductor, so current on neutral is normal, so to speak. Ground, on the other hand is a protective circuit that is not supposed to have any current on it at all.
Why we don't get shock if we touch neutral wire..we need two wires to close circuit pH and n when circuit closes current will flow around the circuit and one wire gets shocked other not why?
We don't get shocked when we touch neutral and ground because neutral is grounded back at the distribution panel, so the effective voltage between neutral and ground is very low. It won't be zero, because there is current flowing on neutral, causing a voltage difference between the load and the distribution panel, but it is low enough, assuming there is no malfunction, to not cause a shock.In the case of touching hot and neutral, or hot and ground, you will get shocked because there is line voltage between hot and neutral, and because neutral and ground are connected together, there is also line voltage between hot and ground.Note, however, that connecting a load between hot and ground is a violation of the code and the intent of the design, because ground is not rated to carry current except in short term fault conditions - you must always connect a load between hot and neutral, or between hot and hot, as the case may be.
Are you down in football when your butt touches the ground?
yes if his hand touches the ground he is down but only if he is touched by contact and then touches the groundNo. A player is down only when a part of his body other than a hand or a foot touches the ground, or when the officials rule that his forward progress has been stopped.
What happens if neutral and hot touch each other?
If a "hot" wire contacts the "neutral" or ground wire, electrical current flows to the ground.
How does a ground fault circuit interrupter act like small circuit breaker?
A ground fault circuit interrupter or rcd trips when the is leakage current to ground In no fault condition the active and neutral conductor emf's cancel each other out in ground fault condition the emf's become unbalanced resulting in a small voltage being inducted into a toroidal coil which activates a internal trip relay resulting in disconnection of supply domestic rcd's are generaly set to trip at 30ma to ground
How does ground fault circuit interrupter act like a small circuit breaker?
A ground fault circuit interrupter or rcd trips when the is leakage current to ground In no fault condition the active and neutral conductor emf's cancel each other out in ground fault condition the emf's become unbalanced resulting in a small voltage being inducted into a toroidal coil which activates a internal trip relay resulting in disconnection of supply domestic rcd's are generaly set to trip at 30ma to ground
How do you find phase and neutral in the circuit?
Neutral will be closest to protective earth ground. In the US, neutral is white. we can check using tester ,when tester is connected to phase only lamp of the tester glows and when it is connected to the nuetral the lamp does not glow. another method is, connect the voltmeter to any one of the terminal and ground if the voltmeter shows 110v 0r 220v then it is phase and the other is nuetral.
The two wires in my stock 56 Mercury radio are both black but one is larger than the other so which wire is the hot lead and which is the ground?
Chassis is ground (neutral) in a car. The two hot wires are for the radio and the light. Connect the smaller wire to the dash light circuit and the larger wire to the accessory circuit.
How does a neutral wire work?
Neutral wires are actually ground wires. They enable the circuit to be completed.
What is difference between ground and neutral?
A neutral is an active conductor in the circuit. It is grounded at the source but that's for another discussion. The ground exists to ensure the proper operation of over current devices like fuses and breakers in the event of a fault.
