Circuit Tester

This Circuit Tester is available from Harbor Freight for about $4.  This is the unit we recommend for troble shooting your electrical system in our course on Electrical Systems Troubling Shooting.
 
There are several things we like about it.  It has a rugged design, an extra long, 5 foot, cord, a sturdy cable clamp, and a very reasonable price.
If you have never used a Circuit Tester you should take a look at our Electrical Systems Troubling Shooting course.  What is nice about a Circuit Tester is that while both hands are busy manipulating the wires and tool you don't have to look away from what your are doing to read a voltmeter.  The light in the handle simply lights up to tell you if current is present.
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