The answer to 'why is my switch power surge' is that a power surge through an electrical switch is often caused by a short circuit or overload in the electrical system. This can happen when there is a problem with the wiring, a faulty component, or too many devices drawing power from the same circuit.
Some common symptoms of a switch power surge include the switch feeling hot to the touch, flickering or dimming lights, or tripped circuit breakers. To address this issue, you'll want to first turn off power to the affected circuit and inspect the switch and wiring for any visible damage or loose connections. If you can't identify the root cause, it's best to call a licensed electrician to diagnose and repair the problem safely.