But before I go into this, let me explain the engineering of a power cable. If you look at a power adapter cable for any non-Apple product, you'll notice some metal "spikes" where the plug transitions to the cable. These spikes are called a heat sink. The purpose of a heat sink is to prevent the cable from heating to a severe degree if you use the charger for an extended period. The heat sink allows the cable to have a nice dissipation of heat instead of heating up and melting.
Actually, I think using the proper gauge wire prevents the heat buildip and melting.
As the power cable becomes twisted and crinked, the wires fray, causing the same amount of current to run over less wire, turning the wire into a toaster heating element.
But before I go into this, let me explain the engineering of a power cable. If you look at a power adapter cable for any non-Apple product, you'll notice some metal "spikes" where the plug transitions to the cable. These spikes are called a heat sink. The purpose of a heat sink is to prevent the cable from heating to a severe degree if you use the charger for an extended period. The heat sink allows the cable to have a nice dissipation of heat instead of heating up and melting.