About the letter described in the power cable electrode and its representative color
When looking at the instruction manual for electrical products, we can often see three unfamiliar and familiar letters, such as L, N, and E, in the description section of the power cord of the product. Familiarity is that people who know English know that this is because of three of the twenty-six letters, but the strangeness is that people may not know what the three letters that appear in the explanation mean. The following will let Xiaobian explain in detail the specific meaning and color of the three letters that appear in the description of the power cord of electrical products.
1. Their respective meanings. In fact, everybody knows the specific meanings of power cords in these three letters in-circuit knowledge. The three correspond to positive, negative, and ground wires. Just in order to comply with international norms, English letters are used instead.
2. General standard. In fact, in different countries, the three electrodes in the circuit will be represented by different colors. The general principle is to use dark colors to represent positive electrodes and light colors to represent negative electrodes. However, different countries use different colors to represent them. The United States stipulates that black or brown is used to represent the positive electrode, and white or red is used to represent the negative electrode.
3. Chinese standards. The use of colors in China is consistent with the general European standards. It is important to note that the new line rules indicate that the original light blue color needs to be replaced by blue.
