amp amperage amps current electric electricity electronics interior object plug shock socket volt voltage volts watt wattage watts wire wiring 9 volt 9V Battery heavy duty negative plugs positive power cable eletric eletricity eletronic energy adapter balck button face numbersswitch shaver smile white communication danger red safety security sign symbol symbolic warning wording burst explosion high voltage inexpected light lightning lights ray of light sudden ampere electrical grunge grungy measure measurement meter needle technical technique vintage aged bolt decal surface texture weathered conductor copper dangerous distribution grid high insulator pylon substation supply transformer transmission