Use an electric pen to measure whether the line that is being energized only the outer rubber will

If the measurement is correct, the electric pen.

It will light up, but the degree of brightness is different.

Since the old type of electric pen is not easy to identify when the light is strong, it is now used as a digital display electric pen.

Digital display electric pen.

No, the rubber outside is insulating, protective, and not charged, so the rubber outside will not light up when measured with an electric pen, good luck and happiness every day!

The normal wire will not be bright, if it will be bright, it means that the wire will leak and conduct, such a wire is not safe, or replace it with a new wire.

No, the outer rubber of the wire and cable is for insulation to avoid leakage and injury, so it will not light up.

Use a pen to test whether the line being energized (only the external rubber) will light up, mainly depending on the type of pen you use.

If you are using neon bubbles, the electric pen will not light up;

If you are using a digital pen with a digital display, there is a good chance that it will light up.

Because the sensitivity of the two is different, digital electric pens usually come with the function of finding live wires on the insulation.

It will not be bright, the rubber outside is an insulator, and it will only light up if it touches the copper wire.

Sometimes the inductive digital pen will be bright, the brightness is small is the induction electricity, the bulb pen will not be bright, if it is lit, the insulation is not good.

Ordinary electric pens do not light up, because of the insulating skin, there is no current through the electric pen.

You have to use the kind of digital display or induction pen will light up, press the induction button, as long as there is electricity, touch the skin.

The digital tester will be bright, and the neon bubble will not be bright. Wangjuna!!

Summary. The test pen measures that both wires are bright, and it may be that the zero line is not in contact.

The normal lighting power supply is a single-phase power supply 220V voltage level, two wires, one live wire, one is the neutral line, the live wire can be tested with a voltage tester during normal operation, and the voltage tester will light up The zero line will not glow when tested with a voltage tester, but when the zero line is not in good contact or suspended, it will also glow when tested with a voltage tester.

What is the reason for measuring both wires with a test pen?

The test pen measures that both wires are bright, and it may be that the zero line is not in contact. The normal lighting power supply is a single-phase power supply 220V voltage level, two wires, one live wire, one is the neutral line, the live wire can be tested with a voltage tester during normal operation, and the voltage tester will light up The zero line will not glow when tested with a voltage tester, but when the zero line is not in good contact or suspended, it will also glow when tested with a voltage tester.

Ask, there is a socket in my house tonight that is damp, and it will be out of power as soon as it is powered on, and then it will not trip, how to get it without electricity, and the electricity written test, the zero line of the tripper is lit up, what is going on.

Is it a problem with the line, or is it a problem with the protector.

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Poor zero-line contact. You can check slowly along the route. It depends on where the problem is.

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Ok thanks.

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1. When the switch controls the open state of the zero line, the live wire returns to the zero line through the load, and the zero line live wire has electricity, and it will have the same brightness when measured with an electric pen.

2. When the switch is open, if the wire is aged, through the greasy and humid lot, etc., the zero line will have induction electricity, measured with a pen, the zero line will be bright, but obviously not as bright as the live wire.

3. The line with a long installation time will inevitably have weak links such as aging, humidity and damage, and the zero line will have induction electricity, and the amount of electric pen will be bright, but there must be no spark.

The diodes connected in parallel on the relay play a protective role to prevent the transistor from being damaged by the high voltage caused by self-induction when the relay is de-energized and released.

Yes. When using the tester, be sure to touch the metal part at the end of the tester with your hands, otherwise, because the charged body, the tester, the human body and the earth do not form a loop, the neon bubble in the tester will not glow, resulting in misjudgment, and Cong carries that the charged body is not charged.

It can be used to distinguish between alternating current and direct current. When testing with a voltage tester, if both poles in the neon bubble of the voltage tester emit light, it is alternating current; If only one of the two poles emits light, it is direct current. It is possible to determine the positive and negative poles of direct current.

The voltage tester is connected to the DC circuit for testing, and the pole where the neon bubble shines is the negative electrode, and the non-lit pole is the positive electrode.

The luminous energy of the electroscope (electric pen) indicates that there is a voltage to the ground (above 60V), but the first one does not mean that there must be a current. And the usual term "electricity" means that there is an electric current passing through the line, because the load can only work when there is current.

There will be induced electricity in the circuit, and the neon bubble of the electric detector will emit light as long as the voltage exceeds a certain range, so the luminescence of the electric detector is not necessarily caused by the electrical power of the circuit, but may also be induced electricity. Moreover, some electrical appliances will have induction electricity, which will also cause the electric detector to shine.

Kiss! Hello, glad to answer for you. The pro-reasons are as follows: both wires of the electric pen are bright, generally because of the zero line breakpoint, in this case, you can re-place a zero wire in the circuit to make the zero line and the live wire in the circuit can be used normally.

However, in the case that the location of the zero line break point cannot be determined, it is recommended to extract all the open wires in the circuit and replace them with new wires to solve the problem of the zero line breakpoint. The zero line of the live wire can make the electric pen glow, if the electrical appliance cannot work at this time, it means that the zero wire has been broken. Hope mine can help you <>

Do you have any other questions?

Summary. 1. What to do if both lines of the electric pen are bright The two lines of the electric pen are generally bright because of the zero line breakpoint, in this case, a zero line can be re-arranged in the circuit, so that the zero line and the live wire in the circuit can be used normally. However, if the location of the zero line break cannot be determined, it is recommended to extract all the wires in the circuit and replace them with new wires to solve the problem of the zero line breakpoint.

1. What to do if both lines of the electric pen are bright, the two guesses that the root line of the electric pen is bright is generally because of the break point of the zero line, and in the case of this rolling beat, a zero line can be re-arranged in the circuit, so that the zero line and the live wire in the circuit can be used normally. However, in the case that the location of the zero line break point cannot be determined, it is recommended to pull out all the wires in the circuit and replace them with new wires to solve the problem of the zero line breakpoint.

Second, how to find the breakpoint position of the zero line 1, when the zero line has a breakpoint, you can use a multimeter to find the breakpoint position of the zero line, the operation method is very simple, if the disadvantage only needs to use the multimeter to measure the neutral line to the ground voltage, if the measurement result is 220V, the breakpoint position of the zero line is between the measurement point and the total zero line, if the measurement result is not more than 10V, it means that the broken oak Zheng point is between the live line and the measurement point.

2. If there is a break point in the zero line of a circuit, and you want to use it temporarily, you can temporarily replace the position of the zero line and the bottom line, but it must be replaced as a whole or not partially, otherwise the leakage protection switch will trip, resulting in its unusability. 3. In addition, the position of the ground wire and the neutral wire can also be temporarily replaced, of course, this is a temporary remedy, if it is used for a long time, it will bury a great safety hazard. It is recommended that after you find the location of the zero point breakpoint yardstick, you can directly rearrange the zero line of a trapped town, and if you can't find the zero line breakpoint, you can directly replace all the wires in the circuit.