What exactly happens when you plug in an appliance and it creates a spark and electricity is cut off?

Question

I plugged in an appliance. It immediately created a loud noise and spark. Had to go to the circuit break to flip the power back on. Was it a current overflow in the cord?

In: 3

Answer 1

There are other Appliances likely drawing current too. As Amperage increases the pop should also, it is electricity briefly arcing across air same as static or lightning. Always turn off devices before unplugging or plugging