Electrician
Tell me about the toughest intermittent fault you've tracked down. What was your process?
What the interviewer is looking for
- This question tests troubleshooting. Uses a logical, step-by-step process with meters and testers to isolate faults rather than guessing.
- Strong answers: Gathered history, used meters, recorders or thermal imaging, isolated systematically, considered loose connections or environmental causes, and verified the fix.
- Likely follow-up: How did you explain the problem to the customer?
Another way it may be asked: Think of a problem that only showed up sometimes and was hard to catch. How did you finally find it?
A structure to follow: Answer, explain, example, limits
- Step 1
Answer
Give your direct answer in the first sentence so the interviewer knows where you are going.
- Step 2
Explain
Say how it works or why you would do it that way, in plain words before jargon.
- Step 3
Example
Anchor it in something you have actually done or seen, with the detail that shows hands-on experience.
- Step 4
Limits
Say when your approach would not be the right one. It shows judgement.
This is guidance on shape, not a script. Use your own real experience and facts; never invent details to fill a gap. See the STAR guide and answer frameworks.
Common slips
- Reciting a definition without showing you have applied it.
- Using terms you cannot explain if asked a level deeper.
- Claiming experience beyond what you can discuss in detail.
How to practise it
Say the answer in 90 seconds, then answer the follow-up as if it were a new question.
Related questions
- A customer says a breaker keeps tripping. Walk me through how you'd find the cause.
- Before you work on a circuit, walk me through the steps you take to make sure it's safe.
- Can you explain what the hot, neutral and ground wires each do in a typical circuit?
- The job starts at seven and you're stuck in traffic. What do you do?
- Tell me about a time an inspection failed or you found work that wasn't to code. How did you fix it?