Understanding electrical energy is crucial to being an excellent troubleshooter. Knowing exactly how circuits work, the functioning of the individual pieces, and also how everything fits together are the fundamentals of troubleshooting. But there’s far more to it. You have to ask questions.
At what time did the trouble beginning? What was going on at that moment? Were there other issues that occurred? Can there be any brand new equipment that was brought in around the very same time? Was there a storm recently? Sometimes simply talking with the passengers is able to start us off in the correct path. We do not have to begin at thing A and work through the whole circuit.
I would love to pass on an adventure we’d look recently at one of our latest projects. We’d just completed setting up the parking lot pole lighting and were power checking them. The moment the breaker was switched on, it tripped out. The electrician given to the process of troubleshooting chose to begin at the board checking for shorts. Next, he transferred to the lighting contactor, then the electric period clock before he moved to the 1st pole.
He wasted four hours drive off blankets, checking, replacing blankets and going on before he eventually discovered the issue within the 1st light pole. An excellent spot to begin would be at the very first pole. He will have isolated the inside portion of wiring out of the exterior area. It will have cut the circuit nearly in half.
Whether or not the issue had been in among the other poles, he would not have wasted all of that time replacing and taking away covers. Troubleshooting must be checked out in a logical fashion. What’s meant to be occurring? What kind of issues might trigger this not to occur?
Keeping the correct assessment tools will also help you save time and, even more important, keep you more secure. I was studying on an additional community forum about a well-used college electrician that utilizes a homemade buzzer with a nine-volt battery power for a continuity tester. What happens if he had been placing his tester on a living circuit by mistake?
Odds are it’d blow up in his hands. Today’s meters are designed to strict standards to comply with, not just the technical specs though the security specs too. Keeping the correct kind of meter will also make your work of troubleshooting easier.
Here’s one more example. We received a difficulty call from a brand new customer. He’d been using one of our competitors for quite a while, though they had been swamped and not able to manage this call. This customer had some good accent lighting within their display room. It works with a transformer transforming the 120V to 24V. It’s attached to two cables that’s operated exposed 6″ below the ceiling on insulators spaced 36″ apart.
The light fixtures lay on the two cables, and fixed screws clamp the fixtures on the cables. The issue they had been experiencing was the transformer kept going bad. The prior contractor had replaced it two times at a price of $300 each. We counted the number of fixtures, estimated total watts, examined the transformer output. Everything was right. We utilized an ammeter to check out circuit amps. It was above the estimated load.
We removed all of the fixtures (there were eight). We used a genuine RMS DMM (digital multimeter) to verify the continuity of the two 24V wires. They screened fine. We used the identical meter to check each fixture individually. They tested okay, as well. I chose to make the megohmmeter and also retest the fixtures. We discovered a high impedance short within the fixtures.
We ordered a brand new fixture, as well as the circuit, has been trouble-totally free since. Would we’ve figured this out with no megohmmeter? Most likely not. Would we’ve figured this out in case we had not known to check for an impressive impedance short? Certainly not. Schooling, trade experience, equipment, interviewing are all needed parts to becoming a booming troubleshooter.
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