Abstract: A circuit tester comprising an AFCI (FIGS. 1 and 2) having two pairs of leads connected to the opposite end of each circuit tester in series for connecting an AFCI with ground fault circuit technology capabilities between an electrical circuit load and a power source to indicate electrical circuit and/or appliance ground fault current leakage in an amount greater than 30 mA (FIG. 1) and 50 A (FIG. 2), and parallel arcing on an electrical circuit or appliance in an amount greater than 50 A (FIG. 1) and 70 A (FIG. 2). Further, the method provides a circuit tester comprising two AFCIs (FIG. 3) having three pairs of leads connected to the opposite end of each circuit tester in series for connecting an AFCI between an electrical circuit load and a power source to indicate electrical circuit and/or appliance ground fault current leakage in an amount greater than about 30 and 50 A and parallel arcing on an electrical circuit or appliance in an amount greater than 50 and 70 A.