An ungrounded conductor is a circuit conductor that carries current to the load. We usually call ungrounded conductors in a service, feeder, or branch-circuit phase conductors. ... You must also connect these same conductors to color-coded or marked terminals of electrical equipment.

What color is ungrounded wire?

Black Wires

Wires with a black insulation coating are always used as hot wires, or ungrounded conductors. Hot wires are used to feed a switch or an outlet.

How do you tell if a wire is grounded or ungrounded?

You can tell that the conductor is ungrounded if the wire color is black. If you currently have an ungrounded conductor system in your home and would like to switch in favour of a grounded one, then you would need change the wiring and outlets.