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=== continuous load ===A load where the maximum current is expected to continue for 3 hours or more.=== fault ===A short circuit in an electrical system.=== ground wire ===A conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth, or to some conducting body that serves in place of the earth. Being grounded means connected to earth or to some conducting body that serves in place of the earth.=== impedance ===The total effects of a circuit that oppose the flow of an AC current consisting of inductance, capacitance, and resistance. It can be quantified in the units of ohms.=== impulse ===A current surge.