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When phase and neutral will short means what will be the voltage in neutral?
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Why should phase and neutral wire be put together in the metal conduit?
to prevent live conduit in case of short circuit
What are the causes for unbalance of currents of a 3 phase a c motor?
unbalance voltage supply resistance between phase unbalance joints of coil loose winding short with body
How will a 3 phase rcd work with no neutral?
a traditional rcd wont work as it uses the difference between the incoming active and neutral to detect current loss it has to read 0. In particular, an RCD alone will not detect overload conditions, phase to neutral short circuits or phase to short circuits. Over-current protection must be provided.
Why do you use a neutral wire in a circuit?
The power company uses a single transformer outside your home to reduce the voltage from the transmission line voltage down to the 240/120 volts that you can use when you plug in your appliances. The power company is trying to be responsible with their money when they put that transformer out there, so they use a transformer that can provide both 240 Volts and 120 Volts, at the same time. To do that, the output of the transformer is divided into two halves; one half provides 120 Volts, and the other half provides 120 Volts, with a "common" or "center tap" in the center of the 240 Volt transformer winding. It isn't a coincidence that your 240 volt plug that operates the electric range or electric dryer is twice the voltage of the 120 volt plug that operates your TV. By using half of the output from the transformer to provide your 120 Volt service, you are technically using the center tap/Common wire as one of the current carriers for the circuit. In theory, the common wire should be identical to the ground wire, but because real life isn't quite the same as the theoretic, it is necessary to treat them differently. In some VERY OLD neighborhoods there were no 240 volt transformers, and as such, no neutral/common wire.
When a three phase generator is short circuted what is the current and voltage?
Hopefully the current and voltage would be zero. The generators overload and short circuit main breaker protection is there just for conditions like that. As soon as the fault is recognized by the protection the generator is taken off line.
What happens if phase wire touch to earthing?
When a phase line touches the neutral by any conducting material means the Short Circuit. If there is a short circuit then the current in that circuit will be much higher and this increase in current may damage the the devices that are connected to that line.
What happens when phase to phase line is connected?
If there is a voltage differential from phase to phase, and a conductance (inverse of resistance) between them, then current (amperes) flows. This is no different than phase to neutral, i.e. voltage across conductance generates current, (I = EC, or I = E/A) except that neutral current is zero in a true phase to phase connection.Note that phase angle is always relative. In phase to neutral, it is relative to (typically) neutral; while in phase to phase, it is relative to the other phase. By Fourier Analysis, the difference between two phases of the same frequency, but of different phase angles, is still a sine (or cosine) wave. Also, by Kirchoff's Current Law, (implied, and I will (sort of) not repeat it here), current entering from one phase and equally leaving via another phase will not reflect at all in the neutral conductor.The simple answer is that connecting phase to phase is a short circuit, just like connecting phase to neutral.CommentThere is no such thing as 'phase to phase' or 'phase to neutral'. The correct terms are 'line to line' and 'line to neutral'.
What does short circit mean?
short circuite means phase to phase,three phase short, phase to earth, three phase to earth, this is all short circuite
Can an electrical short be caused a phase to a phase?
It could be a phase to phase, ph to neutral or earth fault. In single ph wiring ph to ph exhibits no short ckt faultAnswerYes, but you have got the terminology wrong. There is no such thing as 'phase-to-phase', the correct term being 'line-to-line'. So you can have a short circuit as a result of a line-to-line fault, a line-to-neutral fault, or a line-to-earth fault.
Phase wire and neutral wire joined?
Never join them, that is a dead short.
Why neutral is earthed?
Neutral earth is very necessary for observe the unbalaced laod of the 3 phase system. it is also useful for single phase supply and in lighting purpose. neutral earth is also earthed the short ciruit fauly current , which is flowing through neutral. this type it is very essencial for protection and safety purpose.AnswerThere are a number of reasons why the neutral of a supply is earthed (grounded). The first reason is to protect the low-voltage secondary side of the distribution tranformer in the event of a short circuit from the high-voltage secondary side (it will cause the protection on the high-voltage side to disconnect the transformer). The second reason is to establish a datum point for potentials measured on the secondary side of the tranformers -in particular, if the star-point of a three-phase transformer is not earthed, then an unbalanced load will result in unbalanced supply phase voltages, and a potential-difference between neutral and earth -both undesirable and dangerous.
Can you add 110 from another power source to 220 to get a usable 3 phase 240?
Short answer, no. Three phase line voltage is 120 degrees apart in separation. Single phase is 180 degrees apart. To maintain the injected voltage at 90 degrees to the single phase voltage would be nearly impossible to control.
The difference between short to a voltage circuit and short to a ground circuit?
A short circuit is an abnormal connection between two nodes intended to be at different voltages. A voltage circuit is caused intentionally for the purpose of voltage sensing. A ground circuit occurs between a phase and the ground.
Why does a phase in secondary side in distribution transformer give low voltage?
transformer is busted; if input voltage is normal you have short circuit or open circuit somewhere
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.
Why should phase and neutral wire be put together in the metal conduit?
to prevent live conduit in case of short circuit
What are the causes for unbalance of currents of a 3 phase a c motor?
unbalance voltage supply resistance between phase unbalance joints of coil loose winding short with body
