Think of it like a garden hose.
Example If you have 12psi of dead head pressure to the valve.
And you have two hoses one has an ID of 0.05" and the other 1.0".
Little Johny is out playing with political prisoner Barbie giving her the old blow torch and puff up goes Barbie and the lawn.
With the little one you have an impressive stream but not enough volume of water to put out Barbie. Now the other hose has the volume to do the work.
Both hoses have the same "pressure" but the larger one has the volume needed to perform the work. Putting out Flaming Barbie and the lawn.
Same idea with the wiring issue, for what ever reason the circuit cannot support the requirments of the test light but it can the Fluke meter.
Burned contacts, corrosion or a load higher than the capacity of the wire or my favorite one strand of wire left when there should be 20 or so.
The Fluke meter does not load the circuit which is important for working on circuits that are load sensative IE working in uAmps verses mAmps or Amps.
Where as the test light would smoke a circuit that opperates in uAmp's and mAmp's because of it's Amperage draw on the circuit. That is the advantage of the test light it loads down the circuit and will provide a visible indication of the circuit condition. Example being bright good, to dim something going on here, to not lighting we have a problem. At this point you would use the DVOM to further troubleshoot the problem. It works quite well in complement to the DVOM depending on the problem and circuit in question.
The key is picking the correct tool for the job at hand.
Keep on trying ask questions and learn from other peoples mistakes.....it's cheaper and less embarrising that way.
Chris
