I've been using the product for four days (nights) with my 12,000 BTU LG portable air conditioner and it seems to do the job I need. The air conditioning works continuously for about 10-12 hours a day. Garage 14, thick flat gray wire, 20 feet. It looks durable, doesn't heat up at all, sockets appear to be intact (with no arson and smell). Very happy with this product. Would recommend if you have similar needs.