The answer to 'lighting installation sparking' is that sparking during a lighting installation is a serious safety issue that should be addressed immediately. Possible causes include improper wiring, a short circuit, or a problem with the electrical panel. Symptoms may include flickering lights, buzzing sounds, or visible sparks.
If you experience any sparking during a lighting installation, stop work immediately and shut off power to the circuit. Do not attempt to continue the installation, as this could lead to an electrical fire or serious injury. Instead, it's best to call a licensed electrician to diagnose and repair the issue. Attempting to troubleshoot or fix the problem yourself can be very dangerous if you don't have the proper training and expertise.