Name the first step to take when troubleshooting an electrical circuit.

Identifying the symptoms of the issue is the critical first step in troubleshooting an electrical circuit. This process involves carefully observing the circuit's performance and noting any irregularities, such as flickering lights, tripped breakers, unusual sounds, or equipment that does not operate as expected. By understanding the symptoms, you can narrow down potential causes and avoid unnecessary steps like replacing components or altering wiring configurations without a clear understanding of the problem. Identifying the symptoms effectively lays the groundwork for diagnosing the issue accurately, ensuring that subsequent troubleshooting steps—such as inspecting circuit components or disconnecting power—are appropriately targeted and efficient.