What is the terminal wire gauge? What are the sizes of terminal wire gauge?

Terminal wire (Terminal wire) is a kind of wire often used in circuit connection, which is used to connect the power supply, signal or control line of electrical equipment. Its wire diameter refers to its cross-sectional diameter, commonly used units for millimeters (mm) or the United States unit specifications (AWG). The wire diameter of the terminal wire is not only related to its conductive ability, but also to its maximum current carrying capacity and the strength of the wire. In the electronic components and equipment manufacturing, installation, maintenance process, the wire diameter of the terminal line for the correct choice and application is very important, so this article will focus on the wire diameter and specifications of the terminal line. First, the wire diameter of the terminal line wire diameter of the terminal line is usually expressed in numbers and letters, such as 14AWG, 12mm, etc.. The number represents the size of the wire diameter, the larger the diameter of the wire is thicker, can carry the current is also the larger; letters represent the diameter of the specification unit, different specifications unit represents the size of the wire diameter is different. Second, the common terminal wire specifications millimeter specifications in the country, the wire diameter of the terminal line commonly used millimeter (mm) that the common specifications are 0.5mm, 0.75mm, 1.0mm, 1.5mm, 2.5mm, 4.0mm and so on. Among them, 0.5mm and 0.75mm wire diameter is generally used for small electronic equipment and circuit connections, such as electronic components, electronic scales, household appliances, etc.; 1.0mm, 1.5mm, 2.5mm, 4.0mm and other thick wire diameter is commonly used in large-scale power equipment and circuit connections, such as motors, generators, transmission lines, etc.. American Wire Gauge (AWG) Internationally, the wire gauge specifications for terminal wires are usually expressed using American Wire Gauge (AWG). The American Wire Gauge is expressed in units of decreasing numbers, the larger the number, the smaller the wire diameter. Commonly used AWG specifications are 20AWG, 18AWG, 16AWG, 14AWG, 12AWG, 10AWG and so on. Among them, 20AWG and 18AWG have smaller diameters and are suitable for small lines and power connections in electronic equipment; 14AWG, 12AWG, 10AWG and other thicker diameters are suitable for large-scale power equipment and transmission lines and so on. Third, how to choose the right terminal wire specifications? Correctly selecting the appropriate terminal wire specifications for the circuit connection and the normal operation of electrical equipment is critical. In general, the selection of terminal wire specifications should take into account the following factors: 1. circuit load current terminal wire diameter should be large enough to carry the required current. Generally speaking, if the circuit load current is larger, you need to choose a thicker wire diameter of the terminal wire specifications. 2. line length circuit length in the circuit, the line resistance will increase, resulting in a voltage drop. In order to avoid the voltage drop is too large to cause the circuit to work properly, you should choose a thicker wire diameter of the terminal wire specifications. 3. ambient temperature of the conductive ability of the terminal line by the temperature is affected by a large, when the ambient temperature is high, the resistance of the terminal line will increase, resulting in the phenomenon of overheating of the current through the terminal line. Therefore, the use of terminal wires in high temperature environments, you should choose a thicker wire diameter specifications. 4. wire strength terminal wire in the installation, use and maintenance process will be pulled, bending and extrusion and other forces. In order to ensure the strength and durability of the wire, should choose the appropriate wire diameter of the terminal wire specifications. In summary, the selection of appropriate terminal wire specifications need to consider the above factors, a reasonable selection can ensure the normal operation of the circuit, but also to extend the service life of the equipment. Terminal wire is an indispensable wire in the circuit connection, the size of the wire diameter and specification selection is very important. Correct selection and application can effectively protect the normal operation and safe use of electrical equipment, reduce the maintenance costs and failure rate of electrical equipment.

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