The distance a Sub-Zero refrigerator can be placed from a power source is typically determined by the length of the power cord provided with the appliance. The power cord of most Sub-Zero refrigerators is designed to be around 5 to 6 feet in length. Therefore, the refrigerator can usually be placed within this distance from a power outlet. It is essential to ensure that the power cord is not stretched, pinched, or damaged during installation to maintain electrical safety and proper operation. If you need to place the refrigerator farther from the power source, consider using a suitable extension cord that meets electrical safety standards and is rated for the refrigerator's power requirements.