Home › Forums › Panel Meter Support › YB27VA volt amp panel meter missing a wire
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Sidney TupperJuly 26, 2021 at 5:23 pmPost count: 0
I received your YB27VA (100A) volt amp panel meter ordered through amazon.ca. It’s missing the voltage sensor ground wire. Is it common with the current sensor ground wire? Also the instructions don’t correspond with the item since there is no 220vac power input on the device I received.
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Hello,
Is it this item? #100177, https://www.amazon.ca/dp/B00GLKQOKI?ref=myi_title_dp
Thre are only three wires. You should receive wrong instruction, please refer to below wiring diagram.
Sidney TupperAugust 6, 2021 at 5:16 amPost count: 0Thanks for posting the correct instructions. Wired as in the diagram, the meter displayed the more or less right voltage but displayed current as 0.0. Hours later I noticed that it was displaying a reasonable value and changed when I changed the load. The next time I looked at it, it was back to 0.0. Generally, sometimes it works and sometimes it doesn’t. There aren’t any loose connections and jiggling doesn’t affect it. I think it’s defective and should be replaced.
Sidney TupperAugust 11, 2021 at 5:55 amPost count: 0I connected your meter as shown in the diagram you sent. I can’t show you a useful photo of it because the shunt is 2 meters away from the panel meter under the building, but this diagram shows the wiring too:
The highest current I’ve seen it display is about 13A, which seems reasonable, knowing the load. Often it displays 0.0A even though the load is non-zero.
Sidney TupperAugust 11, 2021 at 2:52 pmPost count: 0The PW+ and IN+ are not reversed. The PW+ goes to the positive side of the batteries and the IN+ goes to load side of the shunt, as in your diagram.
I haven’t measured the actual current when the when the meter displays 0.0A, but I know it is not 0.0A because I see loads on at the same time, eg, 1A radio + 0.4A light + 2.2A iPad charger.
Yes, the shunt is in the circuit as shown in the diagram, with COM on the small screw on the battery side of the shunt and IN+ on the small screw on the load side of the shunt.
Note that the problem is intermittent, ie, the current display is correct some of the time, and wrong some of the time.
Sidney TupperSeptember 11, 2021 at 9:13 pmPost count: 0As described above, I’m getting inconsistent readings from your YB27VA (100A) volt amp panel meter. Sometimes the meter shows 0.0 A when the actual current is significantly more than zero and other times it shows a non-zero value when the actual current is also non-zero but different.
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