A motor cable supplies energy to a motor. The cables contains cores – three black cores for Phases L1, L2, and L3 and a green/yellow core for the earth core.
Today, coil windings in the motor are usually interconnected to form a star or triangle. This is how the number of cores is limited to four. A cable with or without shielding can be selected, depending on cable requirements with respect to interference or environment sensitivity. And, of course, the cable is manufactured with a variety of jacket qualities and mechanical classes