14-gauge: This gauge is suitable for medium-duty use, such as powering power tools and small appliances. It can handle up to 15 amps of current and is suitable for cords up to 100 feet in length. 12-gauge: This gauge is suitable for heavy-duty use, such as powering large power tools and appliances.

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.

For larger appliances that draw up to 15 amps like a refrigerator or a portable heater, a 14-gauge cord would be safer. Tools or appliances that require up to 20 amps like a shop vacuum or a circular saw should go with a 12-gauge or 10-gauge extension cord.

The main difference between a power strip and an extension cord is their intended use. A power strip is used to add additional outlets from a single source. An extension cord is used to connect devices placed far from outlets.