New GEM install
Posted: Wed Feb 04, 2015 11:46 am
Just received my GEM last week and installed over the weekend, so thought I would post a couple of photos and join the group. I've been monitoring overall home energy use using a z-wave Aeon HEM reporting to a Vera Lite for a while, and it was fascinating enough I decided I needed more detail
At the moment the GEM is reporting direct to SEG, though I also tested having it report to vera - both work but I can't do both simultaneously at present. The "datamine" plugin of vera does do quite nice basic data storage and graphing but not to the level of SEG. I suppose one option might be to report to vera over ethernet, and to SEG or elsewhere via btmon.py using the second serial port. Having said that, looking at all the posts on the Dashbox makes it seem potentially more detailed and easy to use than SEG - it would be really interesting to see a detailed comparison sometime!
For the sake of completeness, here's the results of my efforts over the weekend. I opted to use 1" PVC ENT to carry the CT wires from main panel to GEM, not having any tools to bend EMT in that size. Pretty happy with the install, though I have about 20' extra ENT coiled up to store for the rest of my life...
The CTs for the Aeon monitor are still on the incoming conductors. There's a 5-10% difference in readings between the Aeon and GEM (I assume the GEM is more correct).
Curious if I should do any calibration of the PT? GEM shows voltage as 122-ish, while my inexpensive DVM shows 124-ish.
At the moment the GEM is reporting direct to SEG, though I also tested having it report to vera - both work but I can't do both simultaneously at present. The "datamine" plugin of vera does do quite nice basic data storage and graphing but not to the level of SEG. I suppose one option might be to report to vera over ethernet, and to SEG or elsewhere via btmon.py using the second serial port. Having said that, looking at all the posts on the Dashbox makes it seem potentially more detailed and easy to use than SEG - it would be really interesting to see a detailed comparison sometime!
For the sake of completeness, here's the results of my efforts over the weekend. I opted to use 1" PVC ENT to carry the CT wires from main panel to GEM, not having any tools to bend EMT in that size. Pretty happy with the install, though I have about 20' extra ENT coiled up to store for the rest of my life...
The CTs for the Aeon monitor are still on the incoming conductors. There's a 5-10% difference in readings between the Aeon and GEM (I assume the GEM is more correct).
Curious if I should do any calibration of the PT? GEM shows voltage as 122-ish, while my inexpensive DVM shows 124-ish.