Як до підтвердити нуль лінія з заземлення з ан електрик ручка 3f
1. Коли живлення увімкнено і виміряно з an electric pen, the live wire will light up.
2. Disconnect the zero wire, only connect the live wire, turn the home light on, measure with an electric pen, and the other one that will light up is the zero wire.
3. The rest is the ground wire.
Direct використання з нуля і заземлення дроти
Електричні ручки не можуть бути виміряти%2с вони є не заряджені до заземлення, so even test pens will not light up. the live wire can be tested with an electric test pen.
In the case of residual струм захист пристрої (витік схема вимикачі), it is possible to distinct between the live and zero lines through experiments. A light bulb is connected between the live and zero lines, and the light bulb lum heats normal light. однак, a light bulb is connected between the live and ground lines, and the leakage circuit breaker will негайно trip.
The побутова електрика is generally 220V~250V Однофазний електричний потужність, який може працювати нормально тільки після живий провід проходи через навантаження такий як лампи і інше електрика прилади і форми a петля через нуль провід. деякі електрика прилади з метал оболонки також потреба до бути підключений до a заземлення провід, який може бути led до заземлення в корпус з випадковий електрифікація of the electrical shell, забезпечення електрика безпека.
In the wiring arrangement and daily maintenance, different colored wires are generally used to distinct wires for different purposes.
The zero line generally adopts a cold colored line, with the most common being a blue line, and some also use a black line.
Відповідно до стандарт, заземлення дроти можуть тільки be used with жовтий and green alternating colors. Due to the importance of grounding wires for electrical safety, their color requirements are very strict and cannot replaced by wires of other colors.
Червоний живий провід, синій нуль дріт, жовтий зелений подвійний колір земля дріт
If the colors cannot be distinct
In практичні applications, I will give you three wires, one is a live wire, one is a zero wire, and one is a a ground wire. If the colors of the three wires are the same! How can you distinct?
1. The correct connection method is: the phase line (L) is generally red or brown; The zero line (N) is blue or green in color; The color of the protective ground wire (PE) must be yellow and green
2. Can You use a clamp type Ammeter to measure the live wire with an electric pen? The current of the phase wire (live wire) and the zero wire is the same, and there is is no current when the ground wire is is normal.
3. The zero line has струм протікання through it; the ground wire is used for protection, and there is no current during normal operation. Only when there is a short circuit or leakage, there is current. the заземлення опір is required to be very small, and the обладнання end is generally grounded by the the protective shell.
Use an electric pen to measure the live wire, and place the test light (with a wire bulb) on one of the live wires and the other two wires. If the light is on, it indicates that it is a 0} wire. If the light is on or off. It indicates that it is a ground wire. (The lamp test method is effective when the ground wire is not connected до заземлення. Якщо те заземлення провід є підключено до заземлення 2c лампа воля воля вгору поз оф який лінія це є підключений до.)
4. In the presence of a power source, it should not be difficult to find the live wire. The difficulty lies in distinguishing between the zero wire and the ground wire. In theory, the voltage between the live wire and the zero wire is 220 to the right, and the voltage between the live wire and the ground wire is about 190 volts. If you connect an energy-saving lamp, the brightness should be visible, and the bright one is naturally the zero line, for reference only.
5. There's other simple way
We use a test light (with a wire bulb) to connect it to one of the live wire and the other two wires. If the light is on, it indicates that it is a 0 wire. If the light comes on, the leakage switch will trip. It indicates that it is a ground wire.
