New Delhi, Nov. 21 -- It's hard to blame anyone for using extension cords or power strips considering how many electronics a modern home needs. Users can be seen juggling chargers, laptops, fans, and a rotating cast of appliances. Most outlets weren't built for today's gadget load. So you buy an extension cord, plug things in, and think you've solved the problem. But not every device is extension-cord friendly and getting it wrong can spell trouble for your home.

Start with the kitchen. Most people assume an air fryer or microwave is fine on a strip, especially if the cord can reach. But appliances that heat up such as microwaves, toasters, kettles, and air fryers draw a lot more electricity than chargers and lamps. When they switch on, ...