The answer to 'lighting installation keeps tripping' is that a tripping circuit breaker is often caused by an electrical overload or short circuit. This could be due to faulty wiring, too many lights on a single circuit, or a problem with the light fixtures themselves. Symptoms may include flickering or dimming lights, warm switch plates, or frequent circuit breaker tripping.
To troubleshoot, first check the circuit breaker and reset it if needed. Inspect the wiring for any damage or loose connections. Make sure the total wattage of the lights does not exceed the circuit's capacity. Replace any faulty light fixtures. If the issue persists, it's best to call a licensed electrician to diagnose and repair the problem, as improper electrical work can be dangerous.