How do you use a multimeter or a caliper to measure the ground wire of a zero line fire line?
The meter can be used to measure the difference between the fire line, the zero line and the ground wire. As long as there is electrical work, the current line and the zero line have current flow, and the ground wire has no current flow. After measuring the fire line and the zero line, the voltage of the ground wire is measured separately with a multimeter, and the voltage is a live wire, and no voltage is a zero line.
The meter can be used to measure the difference between the fire line, the zero line and the ground wire. As long as there is electrical work, the current line and the zero line have current flow, and the ground wire has no current flow. After measuring the fire line and the zero line, the voltage of the ground wire is measured separately with a multimeter, and the voltage is a live wire, and no voltage is a zero line. Single use pliers to distinguish the fire line, zero line and ground wire, is more difficult, single use or can, but more troublesome.
Clamp ammeters referred to as clamp meter. The work is mainly composed of an electromagnetic current meter and bushing type current mutual inductor. Straight through current transformer core made of movable opening, and a clamp on ammeter, named. The utility model is a portable instrument which can directly measure the alternating current of the circuit without disconnecting the circuit, and is very convenient for use in the electrical overhaul, and is widely used.
The multimeter is also called the multiplex table, the multimeter, the three meter, the multiplication table and so on. It is an indispensable measuring instrument in the electric power and electronic departments. It is mainly used to measure the voltage, current and resistance. The multimeter is divided into a pointer multimeter and a digital multimeter according to the display mode. Is a multifunctional measuring instrument, multi range, general multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, some parameters can also be measured AC current, capacitance, inductance and semiconductor (such as beta) etc..
