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What is the minimum resistance required between phase and neutral?

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You measure at a socket, you should measure well less than one ohm resistance between earth and neutral. .my answer: theoritically it is zero


With no load in the circuit the resistance should be infinity.


The recommended resistance that one should strive to obtain is zero.


If the meter is sensitive enough and there is a resistance between the neutral and ground then the meter should be able to detect it.


By creating a loop of equal resistance


it is a return of the elec.


The voltage between line and neutral is determined by the regulations in your country. This is specified as a nominal (named) voltage, together with its allowable variation expressed as a percentage of that nominal value. In the UK, for example, this is 230 V (+10%/-6%).


To keep the current on the neutral to a minimum.


The question doesn't provide enough detail to give a definitive answer. The neutral PD is often used in protective functions on high resistance grounded generators (when grounded through a transformer). High resistance grounding limits the use of transformers - you must be using balanced loads, since very little current will flow (typically around 5-20amperes max) to the neutral. Because of this, phase to neutral values (such as voltage) are meaningless. Any current flowing in the neutral will cause an offset in all three phases from neutral. Since the neutral is high resistance grounded, it does not take a significant amount of current to cause significant offset.


Appliances are supplied with current through two conducting wires called the live and the neutral. Most appliances also have an earth wire. The neutral wire is the one which is connected to earth at the nearest transformer supplying the property, so the voltage between neutral and earth normally does not exceed a few volts, which is due to the supply current flowing through the resistance of the neutral wire.



Some systems have a neutral, some don't. To support single phase appliances, a neutral is required. If only three phase appliances are being supplied, then the neutral is not required. In a three phase delta configuration there is no neutral, in a three phase star or wye configuration the coil ends are connected together and grounded forming a neutral.


Quality of the earth pit needs to be checked and enhanced. Check the continuity of the earth bus/ conductor, check for improper joints in the earth bus / conductor and correct it. Earth resistance will reduce and the voltage difference between neutral and earth will also reduce. Check also for the loose or floating neutral and correct it.


difference between amphoteric solutions and neutral solutions


The earth pin is physically thicker to create a larger surface area. When it makes contact with the ground in the receptacle it is more positive and secure a contact. Also a larger surface area reduces the resistance between the two surfaces which is what is required in the grounding system.


The source is finite. Any real world power source is finite. You will see the same thing with a battery, for example (the battery has internal resistance). If you have no voltage at that recepticle, the resistance should approach infinite due to an open circuit (open breaker, fuse, broken conductor, etc.).


If the load is connected in Delta then no need of neutral. If the load is start connected then neutral is provided. If the system is 3 phase, 4 wire system, then neutral is required.


No, neutral charges don't have electric attractions between them.


How do you determine what? If you are asking how do you measure the voltage between Hot and Neutral, I suggest a voltmeter. If you are asking how do you differentiate between Hot and Neutral in home wiring, the Hot is Black and Neutral is White.


The energy required to break a chemical bond and form neutral isolated atoms is called bond energy.


If the electrical box is grounded, check with a tester, the "hot" wire will have a voltage to the the grounded box the neutral wire will not. If the box is not grounded, with the breaker supplying the voltage turned off, use a tester on the resistance scale to check for continuity between the wires and a cold water pipe or some other grounded medium. The neutral will have continuity between the wire and a ground the "hot" wire will not.


This is a short circuit and breaker should trip or fuse should blow. If you put an ohm meter between hot and neutral with breaker off you will read very close to zero ohms. If there is a short circuit your meter is only reading the resistance of the wire between the measurement point and the short.



appropriate resistance is to be inserted between the neutral point of the transformer and the earthing mat to restricted earth fault current. for this purpose a sensitive earth leakage relay is used. in the event of a fault, fault current returning to the system neutral trips an earth leakage relay and disconnects the supply. anand r. ambekar




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