If you’ve ever looked closely at an electrical outlet ... slot. The small hole is for the equipment grounding prong on a three-prong plug. If the plug only has two prongs, one larger and ...

Curious about the T-shaped hole in some electrical outlets? Learn what it means, what plugs it supports, and why it’s used in ...

the outlets also charge cell phones faster than a standard USB port. Most new vehicles with this feature have around a 150-watt maximum rating, which is good for most portable and small electronic ...