I'm using a multimeter (Mastercraft 052-0052-2) and I decided to see if the frequency of an outlet would read 60hz. I switched my multimeter to the FREQ setting and plugged the RED test lead into the NEUTRAL of the outlet. Upon doing this, a loud bang occurred with a huge spark. Yet the outlet still works and the breaker did not trip. Could somebody explain to me what may of occurred?
The multimeter works fine and no fuses were blown. The BLACK test lead was just resting on the carpet floor. (It probably didn't touch the carpet though, since it the metal probe sits 2cm above the carpet.)