"A lot of people don't have knowledge of extension cords," Martinez says. "If extension cords are 14-gauge and you're running an appliance with a heating element, (like) a toaster oven, microwave or ...

"If extension cords are 14-gauge and you're running an appliance with a heating element, (like) a toaster oven, microwave or dishwasher, a 14-gauge will not hold the amperage and can burn up the ...