The GenTran 10-foot 20 Amp generator cord for up to 5,000-watt generator connects your generator to your transfer switch or power inlet box. Made from all rubber, this heavy-duty cord lasts forever, staying flexible even in extreme cold. It includes male and female 4-wire, 12-gauge twist-lock ends in NEMA configuration L14-20. The male plug goes to the generator, and the female connects to transfer switch or power inlet box.