30-amp extension cords are often overlooked in electrical cable shopping due to their specialized use. However, they're crucial for powering high-demand appliances and equipment. Rated for 30 amperes, these cords deliver more power, making them ideal for charging RVs and other heavy-duty tasks. They typically handle up to 3,600 watts of power at 120 volts. 

When using 30-amp extension cords, matching them with appropriate outlets is vital to prevent accidents. Factors like wire length and gauge affect their performance. Longer cords may experience voltage drops, while a thicker gauge ensures reliability and safety. Read in detail about need of 30-amp extension cords.