rtz
Well-known member
The camera can't "see" the lights. But I have all three lit up and that combo isn't even on the chart. What's that indicate?
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GFCI Circuit Tester Tool
- Thread starter rtz
- Start date
Richard Cranium
Well-known member
that you are testing a inverter from 12 volts
Richard Cranium
Well-known member
most of the smaller inverters are not very accurate or stable with the output.
teamextreme
Well-known member
Same is true of most UPS outputs, those recep testers don't read accurately on them. They often show reversed hot/neutral. We had a customer complain a control panel outlet fed from a UPS was wired backwards because he tested them with one of those testers.
wyliesdiesels
Well-known member
How can it tell though? Supposed to be 60hz 120V AC output. I don't have a meter on me to see though at the moment.
What is it youre trying to test for?
Voltage? Then youre using the wrong tester.
The GFCI testers work on the fact that neutral is always bonded to ground. So you have 120v from hot to neutral and hot to ground, no voltage from neutral to ground.
Those little inverters have 120v but it is something like 60v from hot to ground and 60v from "neutral" to ground.
Those little inverters have 120v but it is something like 60v from hot to ground and 60v from "neutral" to ground.
CJ7VFR
Well-known member
Is the vehicle running? Does that make a difference for the tester to read the inverter correctly?
Jim
Jim
wyliesdiesels
Well-known member
It's running to have that outlet live. I just plugged it in to "test" the tester.
Ok so you just wanted to know if the tester was working?
Why not try on an outlet in your house?
nehog
Well-known member
It is simply telling you both lines are hot with respect to ground. Not surprising with a cheap power inverter either.