Power Cord - The power cord is current transmission wires. Typically the current transmission mode is point to point transmission. Power line can be divided according to use the AC power cord and AC Click here to add captions DC power cable, AC power cord is usually such a high wire since the voltage required to obtain a unified standard safety certification through higher voltage alternating current wire formal party can produce. The DC line is basically a low voltage direct current, so the security requirements and strict no AC line, but to be safe, the current national unity or security certification