Electrical Outlet Tester, What Does It Mean When All Three Lights Are Lit? The Red And Yellow (orange)?
I Have A Plug In Electrical Tester That Indicates Correct Wiring, When Plugged Into Most Outlets The Left Two Yellow Lights Are Lit, However I Have This One Round Outlet For A 20 Amp Circuit For An Airconditioner, When I Plug It In All Three Lights Are Lit