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Phase is just like as +ve terminal & neutral is just like -ve terminal in equivalent dc circuit.
In AC, lines the higher voltage terminal is called phase & lower voltage terminal is known as neutral.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoIn electrical terminology the word "phase" refers to a type of system. There are single phase systems and three phase systems.
The electrical term "neutral" refers to a conductor that carries the unbalanced current. In single-phase systems, the conductor is used for a return current path.
Single phase electric power refers to the distribution of electric power using a system in which the voltage is taken from one phase of a three phase source. Single phase distributions are used when loads are mostly lighting and heating. A home connection to a utility company's system is termed as a single phase three wire distribution. The third wire in this system is the "neutral" conductor.
Three-phase refers to one circuit consisting of three conductors, where the current and voltage in each conductor leg is 120 degrees out of phase with each other phase leg.
There are two types of three phase systems. One is termed "delta" that uses only three line conductors and is classed as three phase three wire. The other is termed as "wye" or "star" and uses four conductors. It is classed as three phase four wire system. The fourth wire in this system is used as a "neutral" which is grounded back to the ground rods or ground plates.
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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 is the relation between the path difference and phase difference?
Relation between phase difference and path difference is path difference/wavelength=phase difference/2*pi
What is the difference between neutral point and earthing?
Earthing point is where conductor is directly connected to ground and its potential is always zero. Neutral is a return path in single phase system and in three phase system Neutral point will have zero potential if all the loads are balanced in the system. In un balanced three phase system even neutral point will have some potential
What is the power line voltage between phase and earthing?
It is the same as phase to neutral. As the neutral is earthed at the electricity suppliers transformer.
What is the difference between amphoteric and neutral compounds?
difference between amphoteric solutions and neutral solutions
Why cant take connection from phase line to neutral line?
A connection can be taken between phase lines, or between one phase and neutral. Both methods give a single-phase supply. Between phases the voltage is sqrt(3) times more than between one phase and neutral. In each case the load gives an unbalanced current on the 3-phase system but the idea is to average out the unbalances over a group of single-phase loads.
What is difference between spn and tpn mcb db?
TPN MCB means Triple pole Neutral Miniature Circuit Breaker where as SPN MCB means single phase Neutral MCB.
What difference between using 4poles circuit breaker and using 3 single pole breakers?
3 pole would be for 3 phase, 4 pole would be 3 phase & neutral
Is there a difference between three phase and single phase electrical supplies?
Yes, there a difference between three phase and single phase electrical supply services.
When 3 phase step down transformer primary side 2 phase came?
You cannot obtain a two-phase supply from a three-phase system. What you are referring to is a 'split-phase' single-phase system, in which one phase of the transformer's delta secondary is centre tapped, with that tap then being grounded and providing the neutral connection; the outer ends of the same winding provide two line ('hot') connections, L1 and L2. The potential difference between L1 and L2 is then 240 V, whereas the potential difference between either L1 or L2 and the neutral is 120 V.
How do you balance the unbalanced load in 3 phase?
If the load is connected in wye (star) and it has a neutral, then the vectorial-difference of the phase currents will flow in the neutral and there will be no problem. On the other hand, if there is no neutral, then an unbalanced load would cause unbalanced phase voltages.
How do you measure phase difference between 2 pendulums?
You can measure the phase difference between 2 pendulums by measuring the distance between the two. The amount it comes out to will be the difference.
