The green wire is the ground wire, the white wire is the neutral wire, and the black wire is the hot wire. Light-duty interior extension cords often lack the ground wire, but if a ground wire is present, be sure to connect it.

The first prong goes into the neutral slot in a wall power outlet, while the second goes into the hot slot. Consequently, non-grounded plug cords have an increased risk of causing electrical shock and damage to appliances due to the lack of a grounding mechanism to function as a circuit breaker.

Do not “daisy chain,” that is, plug surge protectors into extension cords or other surge protectors. This practice voids the NRTL listing and the manufacturer's warranty.

The extension cords do not comply with the wire gauge requirements of the mandatory federal safety standard for power cords. The extension cords were sold online at www.amazon.com from August 2021 through April 2023 for between $6 and $11.