Project One: [Context of the problem]...is to replace fluorescent lights with LED. Bedroom lights. Four switch panel disconnected from wall but not from wiring. I have lost power to/from left switch (driver's side bedroom under-cabinet lights). I am trying to trace the 'flow' into and out of the switch and then trace out to find where I have a disconnect.
Problem Two: The second switch (passenger-side under-cabinet lights) works. The lights still work, BUT the mystery is multiplied when I use the voltmeter to check connections to the switch.
(1) When the switch is on and therefore the lights are on...the voltmeter shows ZERO DCV current.
(2) When the switch is 'off' and lights are therefore off, using the voltmeter, I get 13DCV.!!!!
Logically I should have the opposite happening!
Ideas??
You need to connect 1 side to a good ground and other to the switch if you are putting one lead to each side of the switch, you will get theses readings.
Woody I had read a really easy tool to build that really works well. It is a extension cord with both the neutral and power disconnected leaving you with just the ground pin. This and your meter or test light work very well. Gives you known good ground when ever you need one. Wasn't my idea, but it's a handy tool.
Scott
Thank you both. That is very helpful.