Category: Definitions

Arc Fault – An abnormal condition where an arc occurs (corroded or loose connection).

Atom The smallest unit of matter.  Everything in the world is made of different combinations of atoms.

Ampacity: There is a maximum amount of electric current that a device can carry.

Ammeter: It is possible to measure the flow of electrical current. When a circuit gets tested, connect an ammeter in series.

Appliance: an item of electrical current-using equipment.

AC Current: AC stands for alternating current. At regular intervals, this is an electric current that changes direction many times a second.