Tell me about a time when you had to troubleshoot a complex electrical problem.

High Voltage Electrician Interview Questions

Sample answer to the question

One time, I was working on a project to install a new high voltage electrical system in a substation. During the installation process, we encountered a complex electrical problem that needed troubleshooting. The problem was that the system was not receiving power from the main source. To troubleshoot this, I started by checking the power supply and confirmed that it was functioning properly. Then, I carefully inspected the wiring connections to ensure they were secure and installed correctly. After ruling out these potential issues, I used a multimeter to test the voltage at various points in the system. Through this process, I discovered a faulty relay switch that was preventing the power flow. I replaced the faulty switch and successfully restored power to the system. This experience taught me the importance of thorough troubleshooting and the value of using diagnostic tools like multimeters.

A more solid answer

During a project to install a new high voltage electrical system in a substation, we encountered a complex problem where the system was not receiving power from the main source. To troubleshoot, I meticulously checked every component involved in the power supply. I verified the power source, inspected the wiring connections, and used a multimeter to test the voltage at different points in the system. This systematic approach helped me identify a faulty relay switch as the root cause of the issue. I promptly replaced the faulty switch, ensuring the flow of power in the system. This experience highlighted the importance of attention to detail, problem-solving abilities, proficiency in using electrical diagnostic tools like multimeters, and adherence to electrical codes and safety regulations.

Why this is a more solid answer:

The solid answer provides more specific details about the candidate's experience troubleshooting a complex electrical problem. It demonstrates the candidate's attention to detail by mentioning the meticulous checking of each component involved in the power supply. It showcases the candidate's problem-solving abilities by describing how they identified the faulty relay switch. The answer also highlights the candidate's proficiency in using electrical diagnostic tools and adherence to electrical codes and safety regulations. However, additional information about the candidate's teamwork and communication skills could further enhance the answer.

An exceptional answer

In a recent project, while working on the installation of a high voltage electrical system in a substation, we faced a perplexing problem - no power supply from the main source. To tackle this challenge, I led a team of electricians and coordinated our troubleshooting approach. We started by reviewing the electrical schematics and thoroughly understanding the system layout. Then, we meticulously inspected all connections, conduits, and junction boxes to ensure proper wiring installation. Additionally, we employed advanced electrical diagnostic tools like insulation resistance testers to detect any insulation breakdowns or resistance issues. This comprehensive approach enabled us to pinpoint the problem - a damaged underground cable due to external factors. We promptly repaired the cable, rerouted it away from potential hazards, and successfully restored power to the system. This experience highlighted my ability to lead and collaborate in complex problem-solving scenarios, while also emphasizing my dedication to upholding electrical codes and safety regulations.

Why this is an exceptional answer:

The exceptional answer provides a more detailed and comprehensive account of the candidate's experience troubleshooting a complex electrical problem. It showcases the candidate's leadership skills and teamwork abilities by mentioning their role in leading a team of electricians and coordinating their troubleshooting approach. The answer also highlights the candidate's proficiency in reading and interpreting electrical schematics. Additionally, the candidate mentions the use of advanced electrical diagnostic tools like insulation resistance testers, demonstrating their ability to leverage technology for efficient troubleshooting. The answer further emphasizes the candidate's commitment to upholding electrical codes and safety regulations. Overall, the exceptional answer stands out due to its thoroughness and inclusion of various evaluation areas mentioned in the job description.

How to prepare for this question

Brush up on your knowledge of high voltage electrical systems and safety standards.
Familiarize yourself with electrical diagnostic tools and their usage.
Practice analyzing electrical schematics and blueprints to understand system layouts.
Share examples from past experiences where you successfully troubleshooted complex electrical problems.
Highlight your attention to detail and problem-solving abilities in your answers.

What interviewers are evaluating

Attention to detail
Problem-solving abilities
Ability to use electrical diagnostic tools
Understanding of electrical codes and safety regulations