Questions & Answers for: Sperry Instruments yellow light

GFCI Outlet Tester shows all three lights on When I plug my GFCI Outlet Tester into the outlet all three lights turn on. This is obviosuly not good, but that combo is not described. please advise! I ...

How does a Sperry HST401 ensure power is off to a ceiling fan? I just want to use my Sperry HST401 to ensure the power is off to my ceiling fan. I got the lightbulbs out, pinched the clip and touched ...

...gfci outlet tester and got all three (red,yellow,yellow) lights. What does this mean?? Your tester is defective then. All 3 lights should not light up. The correct wiring would be 2 yellow, no

what a 2-range voltage tester used for This simple, inexpensive tester is described by the manufacturer as a 2 range voltage tester. It appears to have two ranges of voltage that it can test for the ...

If I am trying to find the 'hotwire' for lights how do I do that? Do I touch 1 wire and the junction box then the other and the junction box and whichever lights the instrument that is the hot wire? ...