Two-pronged devices are commonly used for smaller gadgets like phone chargers while larger appliances typically come with a three-pronged cable.

Smart plugs can help track energy use, but they also consume some power themselves. Knowing the standby draw helps you plan better.

It is the bane of worldwide travel: there isn’t just one way to get AC power from the wall. The exact connector — and what you can expect when you plug in — differs from country to country. Even if ...

You know the struggle: You go to plug something in, but the orientation's wrong. The prongs are different sizes, so you turn it the other way and try again. Still wrong. You finally get it, third time ...

It can be really frustrating when you're hooking up an appliance or gadget with a three-prong plug only to realize the extension cord or outlet you're plugging it into only has two prongs. After all, ...