I am going to be updating electrical outlets in my house, so today I checked them all with the 3 lamp tester. Only a few are properly grounded and others not. One outlet is showing strange behavior.
If washer is connected to the lower outlet, the upper shows proper grounding (lamps 2 & 3 are ON). But if I disconnect the washer and check again, only 2nd lamp is ON indicating no proper grounding. Is connecting the washer doing something funny with both receptacles?
- When the washer is connected to a GFCI outlet, it runs uninterrupted without tripping that outlet. I have tested that the GFCI outlet is working as expected (the reset test).
- I tested the original non-GFCI outlet in my question with a second 3 prong equipment (a grain mill) and now the receptacle tester illuminates only the middle lamp (i.e. no grounding) as expected.
So it looks like there is definitely some grounding fault with the washer but that doesn't stop it from working either on GFCI or non-GFCI outlets.
- It looks like my GFCI receptacle may be wired incorrectly. I can't get it to trip with gfci receptacle tester. In stead, when I press the tester switch, it lights up first and last lamps indicating that neutral and hot are reversed. I will post another update when I open up the outlet to check.