Phil Allison prodded the keyboard with:

Ralph Mowery wrote:


That should be done with any piece of equipment. Practice with it
and learn the odd things about them.

** As Clint Eastwood might have said: " a man's gootta know the
limitations of his test gear ... "


Where I worked there were many wires in a conduit carring 120 volt
control
voltage. With a digital meter there was so much induced voltage
you could not tell if a wire was really active or not. You had to
put some kind of a
load on them. YOu could take an analog meter and start with a high
voltage
range and then switch to a lower range. If the meter stayed in the
same or near the same physical position, it was just showing the
induced voltage. Even with a wire disconnected at each end,it would
still shock the crap out of you due to that voltage.


** Electricians once regularly used 40W bulbs in a protected, hand
held fittings to test if circuits were live - see pic.


https://img1.etsystatic.com/068/0/63...18127_nbxf.jpg

The AC plug was replaced with two probes in the examples I saw.

I guess it was important to test the bulb before each use ...


... Phil

I have two of those test bulbs ! I forget who made them. But if
there is really voltage there they don't lie.

--
Best Regards:
Baron.