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Viewing 15 posts - 16 through 30 (of 95 total)
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  • in reply to: Faulty CT Clamp received (UK) #8366 Report Abuse
    djwakelee
    Member

    Send Emporia a chat.  They haven’t replied on this forum in months (reason unknown), but are very responsive and helpful on chat.  I had two damaged CT’s with my 2nd Vue 2 I purchased, and they sent replacements no problem.

    in reply to: Need to monitor main outdoor panel and inside panel #8354 Report Abuse
    djwakelee
    Member

    Yes, you can visually expand and collapse the main and nested panels (and circuits) within the software.

    in reply to: Need to monitor main outdoor panel and inside panel #8350 Report Abuse
    djwakelee
    Member

    I believe the easiest thing is to leave your present indoor setup unchanged, and use a 2nd Vue2 in the outdoor panel.  Install the 200A clamps on the mains.  If you want to measure your individual garage circuits, use additional circuit clamps for those.  Then in the software, set the garage panel as your main panel, and nest the inside house panel underneath the main/garage panel (since it is a subpanel).  All the math should work properly in this configuration.

    The way you are setup with a whole house transfer switch, the way to monitor utility only power would be to put the 200A mains clamps in the transfer switch enclosure on the mains coming from the utility.  Basically before the transfer switch, not after it.

    • This reply was modified 2 months, 3 weeks ago by djwakelee.
    in reply to: 12v AC Adapter? #8349 Report Abuse
    djwakelee
    Member

    The AC adapter was available for the original Vue.  The Vue 2 does not support that connection method – must be hard wired direct to the hot legs.  The original Vue and most accessories are no longer available on the Emporia site for purchase.

    in reply to: Are CTs “Standardized”? #8343 Report Abuse
    djwakelee
    Member

    CTs are not standardized.  Besides physical and electrical connector differences, each has a given Amps to Volts conversion ratio.  So you’d first need to understand what the CTs specs are between the different devices.  If they aren’t the same current to voltage conversion factor, Emporia will let you scale readings in the software, but this isn’t always ideal.  Also, to get accurate readings, CT’s need to be coupled to an electrical circuit which is properly matched to the transformer (so called burden or loading).  If not matched, you may have inaccuracies for large or small current measurements.

    djwakelee
    Member

    The CT must go on the hot (live) power feed wire only.  If you were to clamp it across all conductors like you suggest (live / neutral / ground), the live and neutral current flow would cancel out (subtract), and you would read zero current flow under all conditions.  This is not an Emporia thing specifically – true for monitoring any current with a CT in general.

    One thing you can do in the UK with single phase is that you can reverse the CT, and clamp over just neutral instead of live.  That will also work (since AC current flows between live and neutral and vice-versa), but I’m not sure if that helps your situation or not.

    • This reply was modified 2 months, 4 weeks ago by djwakelee.
    • This reply was modified 2 months, 4 weeks ago by djwakelee.
    in reply to: Alert for when grid power comes back on? #8334 Report Abuse
    djwakelee
    Member

    Duplicate question – see below. Sorry, this is not possible with the Emporia Vue 2 hardware. If your main breaker is off (due to generator safety interlock), there is no current flow in the Vue2 mains clamps so it cannot detect when grid power is restored. Need an electrical field sense device to do this.

    Notification of Power Restoration After Power Outage

    in reply to: Solar production monitoring #8320 Report Abuse
    djwakelee
    Member

    Ultimately I believe it doesn’t matter since Emporia presently only takes an absolute value of the clamp readings – with solar as production and everything else as load (consumption).  But the arrows face toward to power flow.  So toward the load for circuits, or toward the panel for solar.  This is detailed on page 5 of that document, with an enlarged focus area for the solar clamps at the bottom of that page showing the K->L direction.

    in reply to: Solar production monitoring #8316 Report Abuse
    djwakelee
    Member

    By chance, have you read the solar installation guide?  It is separate from the standard install manual.  Below is a link…

    https://www.emporiaenergy.com/Gen%202%20Solar%20Supplement.pdf

    And yes, you need dedicated clamps across your solar in order to monitor solar production.  Setup will try and figure this which circuit you have for solar, which is why it asks you to shut off solar and then turn on.  You will probably need to re-run setup when you get those clamps on.  You can also just change the circuit type to solar production by editing the settings, but best to re-run setup.

     

    djwakelee
    Member

    Definitely sounds like your Vue2 is defective.  Start a Chat with Emporia – they are very helpful and responsive that way.

    in reply to: Using two Vues at the same time #8206 Report Abuse
    djwakelee
    Member

    Sadly no.  There have not been any app or functionality enhancements regarding monitoring with multiple Vue2’s, nor better 240V circuit support.  Emporia’s focus seemed to be working on the EV car charger.  They also released a web site – in addition to the apps.  But all the functionality on the app remains fundamentally the same as it has been over the past 9 months ago.

    in reply to: 2 Vue 2 on the same panel #8204 Report Abuse
    djwakelee
    Member

    Can’t comment on the Android app, but yes you don’t use the main CTs (nothing on the A/B/C ports) if installing a 2nd Vue2 to monitor additional circuits.  You only use the mains CT ports on additional Vue2’s if they are being used in a subpanel.

    in reply to: Emporia no longer reporting after power blip #8194 Report Abuse
    djwakelee
    Member

    I had a similar problem where a power interruption (and restoral) resulted in no data updates (Vue2 seemingly offline).  I also have 2 Vue2’s, and only 1 was in this state – despite power cycling.  Turned out that the WiFi router needed to be rebooted.  There is some issues with NAT and port forwarding that the Vue2 seems to be unhappy about.  Perhaps this is worse for people with multiple Vue2’s.  So next time this happens – try powering down your all your Vue2’s, power down your WiFi router and re-power, then re-power the Vue2’s.

    • This reply was modified 4 months, 1 week ago by djwakelee.
    in reply to: Combine Main of multiple Vues #8193 Report Abuse
    djwakelee
    Member

    As currently implemented, Nesting is only appropriate for using the 2nd Vue2 with its mains clamps on a subpanel and its circuits.  When you want to want to just measure more than 16 circuits on the main panel, the present approach is to not nest – and not use a 2nd set of mains clamps (leave A/B/C unconnected on the 2nd Vue2).  In this configuration, your balance on Vue2 #1 will equal the sum of the circuits on Vue #2, and all the math will still work.  Any solar should be on Vue2 #1 (the one with the mains clamps).

    Emporia has promised updates to better handle multiple non-nested Vue2’s.  That and other features (like better 240V circuit support) seem to be continually postponed.

    in reply to: Solar inverter power consumption #8167 Report Abuse
    djwakelee
    Member

    This is a known issue.  Although the clamps are able to measure current flow either direction, currently Emporia is taking the absolute value of the current readings.  Loads are always shown as positive, and solar always negative.  The feature has been requested – vampire draw of the solar inverters is not taken into account as you note.

Viewing 15 posts - 16 through 30 (of 95 total)