The answer to 'why is my outlet sparking' is that there is likely an issue with the wiring or electrical components in that outlet. Sparking outlets can be caused by a loose connection, damaged wiring, or a problem with the outlet itself. This is a potentially dangerous situation that should be addressed immediately.
Some common causes of sparking outlets include overloaded circuits, water damage, worn-out outlets, and incorrect wiring. Symptoms may include flickering lights, buzzing sounds, or a burning smell coming from the outlet. If you experience a sparking outlet, it's best to stop using it right away and call a licensed electrician to diagnose and repair the issue.