Very interesting story and valuable information. Consumers presume that all heaters are safe to use, and I didn't realize that the electrical cords can get dangerously hot. I was really surprised that the "fuse box" electrical panel on the wall containing the electrical circuit breaker switches can overheat, and cause a fire.
Always plug into wall, unplug when not in use and I will never get a fan style type again, mine blew up and started on fire. I was in the room when it happened, unplugged immediately. it was small easy to put out, no damage, but very scary.
I got a 25 ft 12 gauge drop cord I use with a 1500 watt space heater, and several months later, still no problems. I plug only ONE heater into it. And, never ever use a space heater with a standard extension cord, it will catch fire.
THATS BECAUSE YOUR EXTENSION CORD IS LIKELY RATED AT 15 AMP AND 1800 WATTS WHICH IS EQUAL TO HOUSE WIRING ACTUALLY BETTER MOST HOUSE WIRING IS 14 GAUGE ALSO THE CORD THEY ARE USING IS A 13 AMP CORD WHICH IS GOOD FOR 1625 WATTS THEY KNOW IT'S GOING TO FAIL THEY ARE RUNNING 2 1500 WATT LOADS 3000 IT'S ONLY A MATTER OF TIME YOU SHOULD ONLY LOAD YOUR WIRE TO 80% CAPACITY THEY SHOULD BE MORE HONEST IN THESE SAFTEY MESSAGES YOU CAN RUN AN EXTENSION CORD BUT ONLY IF PROPERLY RATED TO HANDLE THE LOAD AND ONLY IF YOUR POLARITY MATCHES