Articles about Testing Outlets
Testing and Repairing Outlet Wiring
How to Test and Repair Outlet Wiring: Having a Circuit Analyzer style plug in tester that will check the power and polarity of your home receptacle outlets is invaluable.
How to Test Receptacle Outlet Circuits
I have receptacles on one wall that appear to have power when tested but when I plug something in it does not work. How to Test a Receptacle for Voltage.