This is the most common type of electrical cable in homes built since the mid-’60s. “Nonmetallic” simply means that the outer jacket is not metal. It’s often referred to as Romex ...

There's a wide selection of electrical outlets available to homeowners. Below I'll explore the seven most common types of wall outlets in the US to see if you need a simple replacement or an upgrade.

"Electrical engineers rely on mathematics to model these types of physical phenomena, so electrical engineers need strong mathematics skills," adds Mitofsky, who has a Ph.D. degree in the field.