With Glyn’s help I’ve been able to get my system installed and sending data to emoncms, but I still need help tweaking the system to work properly. I have a schematic drawing of my system, but new users can’t upload images so I’ll do my best to describe it.
First I’m in the US, so we have a split phase system, with two 120V legs feeding my meter from the street (plus neutral and ground of course). Due to the layout of my property what I have setup is an emontx with the SCT019 clamps. CT1 is clamped on one of the 120V main feeds from the street and CT2 is on the other 120V feed. I’ve got the USA AC adapter plugged in there and everything seems to function (i.e. I can “see” the emontx on my emoncms inputs).
Next I have a 3.5kw solar system feeding into a sub panel in my house next door to the main panel in another building. Same type of setup: two 120V feeds from the solar feeding into the sub panel. which in turn feeds into the main panel. So I setup my emonpi there with the SCT013 clamps. CT1 clamped on one of the 120V feeds from the solar, and CT2 clamped on the other 120V feed. This also seems to function fine, and I can see all it’s data on emoncms as well.
Now, the trouble is all the numbers are incorrect because I’m sure I need to reconfigure a few things and I’m not quite sure how, such as:
I think I need to use the DIP switch in the emontx to use it for USA power systems? I presume I just need to open it up, flip the switch (where/which one?) and reboot it?
the emontx needs to be reconfigured in emonhub? to use the larger SCT019 clamps, right? I see the instructions on how to do that in the shop page with those clamps, but I’m using one each on CT1 and CT2, so I’m unclear exactly how to do that for more than one. Then I presume I need to sum those two numbers to get an accurate consumption number?
The emonpi gives me a negative number on CT2, positive on CT1, so I need to reconfigure it to monitor solar production only on both CT1 and CT2. I’ve already used emonhub to reconfigure to “USA 110V” but still need to get CT2 positive. I know I can flip the CT2 clamp around and that should happen, but don’t know if it would be better to do this in emonhub instead?
As you can probably tell I’m a novice when it comes to coding, networking, etc, but I’m capable with a little help. Thanks!