[yyzguy]

@oneman

Indeed if the CTs are wired in series with one measuring L1 and the other measuring L2 and they are 180 out of phase, that would be the equivalent of the difference between L1 and L2.    Mathematically it would be L1-L2 (or L2-L1).    However, if I flip one of the CTs (L2 for example), I think that would be additive.  Mathematically it would be L1+L2.     If I flip the wrong one it would be appear as -L1-L2 which would be the same value, but show as power being generated vs consumed.    So yes, the idea is to cancel the cancel!    If I understand correctly, flipping a CT would be the same as running the wire backward through the CT.

Then again, I could be wrong.   That’s why I’ve ordered parts to create the series connection vs modifying the wires of two CTs.    If I was confident this would work, I’d probably have already done the damage 🙂

And just to be clear:  I inadvertently hijacked a conversation about combining two Vues or two panels.   I came into the conversation in the middle, thinking it was about combining to sensors within a panel.    I should have started a new conversation.

 

 

 

 

 

[yyzguy]

@oneman

Yes, I’m doing this to combine unbalanced loads into a single measurement.    So, yeah…off topic from the original post, but related in the sense of trying to measure unbalanced 2 phase circuits.   I had been working with tech support about measuring unbalanced load (clothes dryer)  and I think they pointed me to your post about connecting two CTs in series.    I didn’t realize the topic was initially about combining Vues.    Somewhere there was also a mention about a software update to combine two sensors into one reading, possibly on a different thread.    Sorry for the confusion.

[yyzguy]

@oneman   I understand you didn’t buy any extra parts.   My concern is I didn’t want to modify the CTs.   I’m going to make my own series connector from parts.

 

@rcohen

I was editing on a tablet and found it simpler to post pictures rather than links to the products.

For the female part, I ordered from Amazon https://www.amazon.com/dp/B09V16N8NV.   There’s nothing special about this part…it’s a 2.5mm TS  (Tip/Sleeve).   There’s many manufacturers of those.   TRS may work

For the mail part, I made a mistake and accidently ordered 3.5 mm part which won’t work.   It was quite a challenge to find a 2.5mm part with a right angle and just 2 conductors  (three and 4 conductors are common place because they’re often used for stereo earbuds/headphone or single earphone plus microphone or stereo plus microphone).    If you don’t require the right angle  (which is what the CTs have) straight versions are easy to find.   I don’t have enough physical space in my panel for straight connectors.

Anyway, I have since found two different sources

https://www.ebay.com/itm/274597758848  (I bought 4 and there was a significant discount.  Total price was $17.28 plus shipping).  I only need 3, but I figured a spare was worth having.

https://vetco.net/products/6-2-5mm-male-mono-pigtail-cable-right-angle   I also found this source but had already ordered from the ebay seller before this seller was able to confirm they had inventory.  (He has 35 in stock as of this morning)

Additional comments:

I had an email conversation with support and they said they’d see if they could “bump” the request to merge two channels with the developers.

If combining CTs in series works, I think it’s still a better solution because it would use a single port instead of two.

 

 

[yyzguy]

Can you test your theory by temporarily changing the password on your guest network to include &.

Many years ago my home network used an extremely long random password with every character type.   When various devices with virtual keyboards became common I changed my password to mostly digits with a small number of letters and special characters to make it easier to enter.

 

[yyzguy]

I’m using the maximum number of characters for WiFi (63 or 64, can’t recall) and it’s working fine.

if you’re pasting your code, is it possible you’re accidentally pasting a whitespace character at the end?

[yyzguy]

I’ve got parts on order to make a serial connection for the 50A CTs

It should be pretty simple to cut off the 90 degree 2.5mm TS and connect it two of the female jacks. That would make it possible to use two CTs in series connected to a single Vue input.   I’m expecting to flip one of the CTs to get the desired results.

if it works, this method would likely be better than if Emporia mathematically merges two inputs because only one channel would be consumed on the Vue.

I’m assuming the “tip” is the signal and sleeve is ground.   I’ll check that before wiring.

I just now noticed one of the parts is the wrong size so I’ll have to get an adapter or order the correct part, but I think the method should work

[yyzguy]

Initially, I had the same thought as you.   However, I noticed the data cable for the CT comes in on the K side and the Emporia logo is on the L side.   I actually covered their designator with labels, so I just look at the data cable and logo for the correct direction.

 

[yyzguy]

Indeed that seems strange and I’m usually of the mind that the likelihood of 2 faulty units seems unlikely, unless they have a bunch of them, in which case there would be many complaints on this forum.

can you ask support if they tested your first returned unit?  If they offer to replace it again, perhaps they’d check the return closely for manufacturer defects.

as a new Vue owner myself, I’d like to hear how it goes with support and what the outcome is.   As you mentioned previously their support seems to be prompt and thorough.

good luck

[yyzguy]

Have you tried swapping CTs to different ports to see if the problem follows the CT or occurs on a specific port?  If you have a problematic CT, obviously replacing the Vue wouldn’t fix the problem.

I just started installing this week and haven’t had any problems, but obviously it hasn’t been very long either

[yyzguy]

I’m in the middle of installing my system and was wondering about this exact kind of thing while staring at the two hot and one neutral line

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