Extension cords are great ... except when they're incredibly dangerous. Here's an everyday mistake you're making with them ...

"Let's say you connect [an extension cord] to a floor heater," Martinez says, "the plug melts and it starts a fire. That's why you can't use extension cords and/or power strips for any appliances ...

Extension cords are manufactured with a maximum capacity to handle electrical current, which is determined by the size or gauge of the wire used in ... the countertop and plug it directly into ...

"Let's say you connect [an extension cord] to a floor heater," Martinez says, "the plug melts and it starts a fire. That's why you can't use extension cords and/or power strips for any appliances ...