The answer to 'electrical wiring not working' is that there could be several common causes, including loose connections, circuit breaker issues, damaged wiring, or faulty outlets or switches. Symptoms may include lights flickering, outlets not working, or complete power loss in part of your home.
In many cases, you may be able to troubleshoot and fix minor electrical wiring issues yourself, such as tightening connections or resetting a tripped circuit breaker. However, for more complex problems or anything involving exposed wiring, it's generally best to call a licensed electrician to diagnose and repair the issue safely.