The answer to 'why is my lighting installation' is that there could be several common causes, including faulty wiring, outdated or damaged fixtures, incorrect installation, or power supply issues. Symptoms may include flickering lights, bulbs burning out quickly, or the entire lighting system not working.
Some potential solutions include checking the circuit breaker, inspecting the wiring and connections, replacing old or damaged fixtures, and ensuring proper installation. However, for more complex issues or if you're not comfortable working with electrical systems, it's best to call a licensed electrician to diagnose and resolve the problem safely.