Anyone ever here of these two rules: (Two simple rules I have known since I started the trade.)
Follow the short from the source.
In this method you follow a short by measuring its ohm value, and following it though and taps of the circuit until you find it or pass it. If you pass it, take one step back. There it is... In this process you're splitting the circuit down to managable parts, only following the path of the short. Works the same for over-load, or indirect short.
Follow the open to the source.
When following an open, you start from the device without power, (Phase or Neutral) and follow the circuit back through the successive devices and conductors that provide power to it.
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I vaguely remember some accronym...
Interview the operator.
Determine the problem.
Expose the circuit
N...(Now learn the circuit operation.)
T... (Test, and take notes.)
Isolate the circuit.
Follow the path to the problem.
Y... (Something like "You're done, now fix it.")
That is an older post that I had on the topic of troubleshooting that kind of relates to this:
https://www.electrical-contractor.net/ubb/Forum1/HTML/006311.html Funny looking back to last year.... That PM I mentioned at the begining of that post - I went to work for that company, and that PM DROVE me NUTS!!!! Over-blown self-justifying cat herder, thought she knew everything, and said that she did so many things, so often that she believed herself.... I gave notice a few weeks ago, and will be leaving there the first week of November to go work for an old underling who is looking to grow - might work out to be a partnership....
