A string of standard ( non-LED ) Christmas Lights (100 lights, Two 50 light strings connected in parallel ) has me confused. The total resistance of the string is 55 ohms. When using the formula I=E/R the calculated current is 2.2amps using 120 volts for E. Measuring the current with an AC ammeter provides a reading of 320 ma. What am I missing between the measured and the calculated values?