To minimize shock hazard, the equipment chassis and enclosure must be properly grounded. If the equipment is supplied with a three-conductor AC power cable, the power cable must be plugged into an approved three-contact electrical outlet. The grounding wire must be reliably connected to an electrical ground (safety ground) at the power outlet. The power jack and mating plug of the power cable must meet International Electrotechnical Commission (IEC) safety standards and local electrical regulatory codes.