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When a GFCI senses a fault the ground-fault current can originate from what either the hot or neutral wire on the line side of the GFCI either the hot or neutral wire on the load side of the GFCI?
Wiki User
∙ 13y ago
In a very real sense, a "ground fault" cannot come from the neutral side, since, if your wiring is performing as designed, there should be little potential between the neutral and ground. A ground fault is said to occur when the current OUT, through the "hot" side is not equal to the current BACK, through the neutral, meaning that current is leaking to somewhere else... such as through your body.
Having said all that, it is certainly possible that you could cause a GFCI to trip by introducing current to the neutral from a circuit that does not go through the GFCI breaker; but that would involve non-standard wiring practices.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe GFCI is detecting very small currents to ground. For example, if you had an outlet in a very humid or rainy area the water might touch the hot wire and provide a continuous path to ground through the water which is conductive. This small current should trip the GFCI.
Wiki User
∙ 13y agoThe source wire, or the ground.
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Why half size of neutral conductor in 3.5 core cable?
Because neutral doesn't have to carry the load current .This is either used for unbalanced current (in Y-connection) or for earthing purpose which don't require high ampere rating....
Why neutral is required?
Neutral is the current return for the hot leg(s). Neutral is grounded, so as to limit the maximum voltage of any of the hots with respect to earth ground. In a typical residential 120/240VAC split phase system, either of the hots with respect to neutral is 120VAC. In a three phase system, neutral is at the center of the wye configuration, and each of the three hots returns power to it.
What do atoms do that alters there overall neutral charge?
Atoms either gain or lose electrons to change their overall neutral charge.
What are two places that neutral buss bar in the service panel can be grounded?
Answer for USA, Canada and countries running a 60 Hertz supply service.There is only one place that the neutral can be grounded and that is at the service distribution box that containing the first over current device. You have the neutral coming into the box and the ground wire going to either a grounding rod or the water line where it comes into the house.
What makes ions out of neutral atoms?
Ions are formed when neutral atoms are either losing electron(s) or gaining electron(s) and thus are transformed to either positively or negatively charged ions.
Why half size of neutral conductor in 3.5 core cable?
Because neutral doesn't have to carry the load current .This is either used for unbalanced current (in Y-connection) or for earthing purpose which don't require high ampere rating....
Why fuse will get burnt when phase and neutral get connected?
A fuse is an overcurrent protection device, which protects a circuit by melting in the event of either a sustained overload current, or a short-circuit current. A short-circuit current will occur when a line (not 'phase') conductor makes direct contact with a neutral (or earth) conductor.
What is the difference between over current and overload condition?
The term, 'overcurrent', describes either an 'overload current' or a 'short-circuit current'.An 'overload current' is a current that is higher than a circuit's 'rated current'. For example, if you have too many loads plugged into the same circuit, then the resulting current is an 'overload current'.A 'short-circuit current' is a large current resulting when a line ('hot') conductor accidentally makes contact with either a neutral conductor or an earth (ground) conductor.
Why neutral is required?
Neutral is the current return for the hot leg(s). Neutral is grounded, so as to limit the maximum voltage of any of the hots with respect to earth ground. In a typical residential 120/240VAC split phase system, either of the hots with respect to neutral is 120VAC. In a three phase system, neutral is at the center of the wye configuration, and each of the three hots returns power to it.
Opposite word for neutral?
Either "biased" or "colorful" depending on the context of "neutral".
Interrupts originate with either?
hardware or software
How 3 phase unbalanced current flow through neutral?
Kirchoff's Current Law states that the signed sum of the currents entering a node is zero. If the neutral point is the node, then, in a balanced system, hot matches the other two hots, resulting in no current through neutral. Any imbalance, either due to neutral to hot current flow that is not balanced by the other two neutral to hot current flows, or due to ground fault, will result in a current flow on neutral, so that the sum of zero is maintained.When you think about this, remember that the law said "signed" and "entering". When you analyze a circuit, simply be consistent in your usage. For instance, in a balanced system, current entering the neutral node from one hot side is considered positive, and the current entering the neutral node from the other hot side is considered negative, i.e. it is leaving, not entering.This gets more complicated in three phase power, because now you have to consider phase angle, but the concept is exactly the same...If you are connected in wye, with a neutral, then the neutral conductor will have zero current on it only if the three phase hots have the same current on each. If you do vector analysis on this, adding up sin(x), sin(x+120), and sin(x+240), you get zero.The same thing happens when you are delta connected, without a neutral, but then the imbalance occurs out in the distribution system, beyond the service transformers, because the distribution system is generally a wye system.Ground fault will, of course, "change the rules", because you no longer have only four paths to that neutral point node. In fact, that is how ground fault current interrupters (GFCI's) work - they measure outbound current and compare it to inbound current - they must be equal and opposite, i.e. they cancel each other out - otherwise there is another path - a ground fault - and the device trips.
Why doesn't current flow through the neutral to earth?
The 'hot' wire delivers current from the power station into the load, which could be any electrical appliance such as, for example, a fridge, a light or a motor.The 'neutral' wire is there for the specific purpose of carrying the current coming out of the load back to the power station. If the neutral wire was not there, there would not be a complete electrical circuit from the source (power station) to the load and back to the source.In normal operating conditions the connection from the neutral wire to the Earth does not carry any current.There should always be 0 V (zero volts) between the neutral wire and the Earth. i.e. no potential difference should ever exist between the neutral wire and the Earth.The "neutral to earth" connecting wire is fitted to ensure that no part the neutral side of the circuit can develop a high voltage above Earth. If that connecting wire wasn't in place and the circuit had no other protection device (such as a GFCI or RCD) fitted, a very dangerous electrical shock hazard could be present which could electrocute the people using the appliance.That is why any grounding wires, fitted either to the appliance or to the breaker box, should never ever be cut or removed.
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True or false a vehicle automatic transmission can start either in park or neutral?
It is true that a vehicle with an automatic transmission can start in either park or neutral.
What is the maximum neutral current for a three phase delta star system?
It is either a delta or a star, it can't be both. A delta system doesn't have a neutral so the question must be about a star system. A high neutral current happens for example when one line is disconnected, and the neutral current then equals the current in the other two lines, which is the same current as when two lines are disconnected leaving only one line.There might be ways of calculating how to make the neutral current larger by using unusual power factors, but the above is a useful working maximum that allows all four wires of a four-wire star system to be the same size.AnswerThe term, 'delta-star', refers to a three-phase transformer connection in which the primary windings are connected in delta while the secondary windings are connected in star (wye). This is the standard three-phase connection, in Europe, for distribution transformers. Single-phase loads are connected to the secondary between alternate lines and neutral, in order to try to and balance the resulting load and minimise any resulting neutral current. Obviously, however, without having any specifications supplied, it is quite impossible to answer this question.
