PVC Insulated Copper Wire With CE

Why the  Electrical Wire heat during operation? During the operation of Electric Cables, they will heat due to conductor resistance. The resistance is generally very small, the heating can be expressed by the formula Q = I ^ 2R, it shows that for a section of conductor in actual use (r is constant), the greater the current passing through the conductor, the greater the heating; If the electric flow is constant, the heating power of the conductor is also constant. The heat released during...