Positive and negative AC currents are constantly changing, so how can there be no live wires?

Introduction The positive and negative of AC current are constantly changing, so how can there be a distinction between zero wires and live wires? Also, due to differences in how electricians install outlets, it is not absolute whether live wires are on? left or right

Positive and negative AC currents are constantly changing, so how can there be no live wires?

Also, due to differences in how electricians install outlets, the live wire is not always on the left or right! Don't touch it with your hands, use a test pen to test it. ?

Alternating current is generated by a generator and its waveform is a sine wave. Each time the generator rotor rotates once, the rotor coil cuts the magnetic field lines in the stator magnetic field once, and the voltage at both ends of the rotor coil changes twice:

< p>0——+220V ——0—— _220V——0. Therefore, the direction of AC voltage and current changes with time. The change occurs between the live line and the neutral line.

When the neutral wire is grounded, the voltage between the live wire, the ground wire and the neutral wire are both 220V. When the ground wire is in good contact, the voltage between the neutral wireand the ground wire is still zero!

If one end of the diesel generator is on fire and the other end is grounded, will the light come on?

The reverse connection of live and neutral wires The output of the generator is equivalent to short-circuiting the armature winding of the generator, causing large current to be generated, and the components susceptible to damage are:

1. Try upgrading to a new AVR;

2. The generator loses its magnetism. Use a battery to magnetize the field winding.

The light will not turn on in either case.

Because the lamp does not form a current loop. The neutral point of the generator winding is not connected to ground. The live wire from the generator passes through the lamp to the neutral wire of the transformer and cannot return to the neutral point of the generator winding.

Generally, the generator produces three-phase wires and un neutral wire. Send it to the electrical distribution panel and connect it to the busbar. At this time, the neutral line of the generator is connected to the neutral line of the transformer and grounded, and then delivered to the load. ?

Edit: Take a closer look to see if the generator output neutral line is truly isolated from the transformer neutral line or ground. Using a single live wire from the generator will definitely not form a loop. Is there an electrical device or instrument that conducts the neutral wire of the transformer to the neutral wire of the generator?

What the person above said is false. The meter that steals electricity must always be connected to the neutral wire. Simply connect the meter's live wire and find another ground wire as neutral. thread. The counter will always run. Unless the meter is connected to the neutral wire, the meter will not spin.

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