Re: voltmeters
I learned a lot about electricity by playing around with a meter when I was a kid. I tested known good circuits and found out what readings were normal, and then what readings I would get when something was wrong. This has helped make me a good troubleshooter. Of course, by all means be safe, just don't become one of those guys that can bend conduit perfectly, but couldn't diagnose a blown light bulb. I would strongly recommend a Cat 3 meter with an amp clamp, testing volts is only part of the equation. I own a Fluke 36 and I don't have issues with high input impedance like some meters do. This is my day to day meter. I also own a Fluke 189, for different types of troubleshooting,ie. micro-amps for furnace work and the like. Of course, the wiggy is always available if you need a second opinion.