Precision of Vue2?

[currentdraw]

I have both the Vue2 and the Utility connect,

The utility connect shows consistently 4% higher reading.

Could it a problem with my installation?

[ryanhoelzer]

I noticed there’s a multiplier for the mains.  I would think all of this assumes you’re getting exactly 120V coming in.

Do we need to measure voltage and calculate that multiplier to be more accurate?

[currentdraw]

The Vue2 is supposed to mesure voltage, I believe. I talked to support and they feel that may be OK since I have it installed at a sub-panel.

But 4 % losses from panel to subpanel is a lot.

[ryanhoelzer]

I would play with the multiplier and see if you can get them closer.

I’d assume your bill reflects what the utility connect shows?

[currentdraw]

If I use 1.03 multiplier they get fairly close. The bill reflects the meter. 3% loss in the wire to the subpanel is not possible.

So either:

The smart meter is over charging.

Or

Vue2 underestimates by 3%.

 

I will try to test that by shutting down all devices and only use a device with known consumption, perhaps also metered with a plug meter.

 

 

[Chuck]

You might want to take a look at this thread regarding the inaccuracy of the Utility Connect.

Inaccurate Readings from Vue Utility…

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