Home was built in 1987. Garage had a few GFCI protected outlets. There was one separate outlet that was only 2 prong (located about 3 feet away from a GFCI outlet). It showed a weak signal with my light tester. When I put a volt meter on it, it showed 1Volt.
What is a 2 prong outlet doing in this house/garage?
What would a 1 volt circuit be useful for?
The only thing I can think of is the homeowner replaced a faulty GFCI with a an old 2 prong outlet they had laying around. There was subsequently a fault. And now it only shows 1 volt after the fault.
It’s definitely a cheap (it was free from northern tool, actually! hahaha) meter, but completely accurate when tested next to my other higher dollar meters. No reason not to believe it. Dollar cost of the meter is not a factor.
I wondered how long it would take for someone to comment on my free meter!
The voltage actually fluctuated from about .8 to 1.2v. But just happened to read 1v when I snapped the pic. As far as it being a stereo speaker line, interesting. Now that you mention that I have heard of this being done. The home was a foreclosure and had no stereo equipment or anything left behind, but could definitely have been used for that.
Yeah. I used a light tester (since it was only a 2 prong), and it lit it up, and it was enough voltage to keep it lit, but just much dimmer than 120v. So that’s what caused me to be curious and put the voltmeter on it.
Light tester may not be big enough of a load, but 1 volt is not that big of a voltage to put a load on, so testing it could be hard.
In my limited experience, these things are best researched at by tracing the cables through the junction boxes, which is way outside the scope of a home inspection.
I would defer to a sparky…
This could be nothing, i.e. “phantom voltage”, but it could be a loose connection arcing or glowing somewhere.
Better safe, especially now that you’ve pointed it out.