Install a Neurio Remote Energy Meter and CTs

Required Parts and Supplies

Tesla P/N Description
1112484-99-A and 1112484-06-A Neurio W2 meter kit
1622277-99-A RGM-Capable Neurio W2 CT
1622289-00-A Neurio W2 CT Extensions
1622286-00-A Neurio W2 CT Y-Splitter
N/A 2 pole 15-20A breakers (Varying types for differing Load Centers)
N/A Load Centers
N/A Wire: Comm wire 16AWG 4 type (site monitoring), Comm wire 16AWG 2 type (solar monitoring), 10AWG THHN
N/A Wagos & Wire nuts

Install the Meter

  1. Using the screws provided in the meter kit, attach the mounting plate to the inside of the main distribution board or to another surface. Choose a location that takes into account the voltage line harness and CT cable lengths.
  2. On the voltage line harness, combine the blue and red leads as shown below.
  3. Plug the voltage line harness into the meter.
  4. Connect the voltage line harness leads to a dedicated two pole circuit breaker (not exceeding 20 A):
    Voltage Harness Phase and Wire ColorBreaker Terminal
    A (black)L1 (Phase A)
    B (red)L2 (Phase B)
    C (blue)Spliced with the Red B wire
    N (white)Neutral busbar
    Informational PurposesAn informational icon, calling your attention
    Note
    If a dedicated circuit breaker is not available, the voltage line harness can be spliced to existing 15-20A breakers.
    Informational PurposesAn informational icon, calling your attention
    Note
    Ensure the breaker phases align with the supply phases. Some models cross phases so that the breaker is the opposite phase of the supply lug above it.

Install the Antenna

To install the antenna, screw it onto the meter. It is recommended to locate the antenna outside the enclosure using the included antenna extension:

  • Locate a 1/2” or 3/4" knockout and install a cable gland.
  • Mount the antenna by threading the extension cable through the included knockout mount and securing the mount.
  • Screw the antenna onto the extension cable and connect the extension cable to the meter.
Figure 1. Antenna Port (left) and Antenna Extended and Installed Outside Enclosure (right)

Install the CTs

Informational PurposesAn informational icon, calling your attention
Note
For each CT, ensure the CT is installed with the label SOURCE THIS SIDE on the CT housing pointing toward the power source (service entrance / grid for Site CTs, solar inverter for Solar CTs). Always verify CTs are in the correct orientation by observing power flow in Tesla One.
Figure 2. CT Orientation in Relation to Power Flow
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Warning
Before installing, disconnecting, and/or adjusting CTs, ensure the circuits being measured are not energized and the system is completely powered down. Failure to de-energize the system may compromise operator and equipment safety.
  1. Install the Site CTs upstream of all loads and generation:
    1. Plug the CT measuring L1 (Phase A) into the CT1 or CT4 port on the meter.
    2. Plug the CT measuring L2 (Phase B) into the CT2 or CT3 port on the meter.
    3. Clamp the CTs around the L1 and L2 conductors where Site is being measured.
  2. Install a Solar CT around the Solar Inverter conductor:
    1. Plug the CT into a port on the meter.
      • For L1, plug the CT into the CT1 or CT4 port
      • For L2, plug the CT into the CT2 or CT3 port
    2. Clamp the CT around the appropriate Solar Inverter conductor based on the port it is plugged into.
    Informational PurposesAn informational icon, calling your attention
    Note
    Only one CT is required to measure Solar because total power output is calculated by the software. This CT is configured as 1CTx2.