I'm not sure what's behind the way three prong socket plugs are currently being designed for extension cords, but I've found that most of them no longer use the traditional full-width spring-loaded strips that fully engage the plug pins . both sides. Instead, they now use tiny 1mm wide contact strips. Sure, it works (for a while), but remember it's a 12/3 cord rated at 15A or 1875W. It's a lot of power to rely on a 1mm wide strip of metal to ensure good contact, especially when the cable has worn down and wear and tear causes the connectors to come loose. So it's not surprising to me why we see so many complaints in reviews about melting or burning after about a year of ownership after plugging, unplugging and plugging in again many times. With tiny areas of contact in each socket, it's no wonder that arcing eventually occurs, destroying the plug and easily melting the plastic, which can lead to electrical fires. Interestingly, even though they use these thin contact strips in the hot and neutral terminals, the ground terminal is still a full contact socket! Saving manufacturing costs rather than providing a reliable connection for years of heavy use. At 1800 watts this is disaster awaiting and I would recommend looking for a product that has a better outlet design and manufacture. I see that 12/3 cords are more expensive with a traditional power adapter or extension cord, but still use the traditional outlet design. Or even traditional cords that use a single outlet. Check before you buy, electrical fire can kill. I'm glad I did and decided to pay more and go with a Lowes 12/3 all-metal extension cord.