About Tesla Remote Energy Meter

Tesla Remote Energy Meter Overview

Tesla Remote Energy Meter is connected to the system Site Controller wirelessly (any Site Controller) or via an RS-485 wiring harness (Powerwall 3 or Backup Gateway 2 only).

Figure 1. Location of RS-485, AC, and External Antenna Terminals
At the time of publication, Tesla Remote Energy Meter has (3) CT terminals:
Figure 2. Location of CT Terminals

CT4 functionality will be available at a later date.

Tesla Remote Energy Meter LED

Tesla Remote Energy Meter has an LED which indicates the following status:
Solid green ON Powered and operational
Figure 3. Tesla Remote Energy Meter LED Location

About Voltage Taps and Current Transformer Connections

The Tesla Remote Energy Meter functions by measuring voltage (by voltage tap) and current (by Current Transformer, or CT) at key locations in the system. For the meter to function correctly, the following are critical:
  1. The Tesla Remote Energy Meter voltage line harness leads must be connected to the correct phases.
  2. The CTs must be placed around conductors of the correct phase:
    • CT1 = L1
    • CT2 = L2
    • CT3 = L2

Install the Tesla Remote Energy Meter and CTs describes how to perform these steps correctly, but the following diagrams illustrate some high level correct and incorrect meter / CT installations.

Figure 4. Correct Meter and CT Installation
Figure 5. Incorrect CT Installation - CTs are Measuring Incorrect Phases
Figure 6. Incorrect Meter Installation - Main Breaker Swapped Busbar Phases, Resulting in Voltage Line Harness Being Wired Incorrectly
Figure 7. Incorrect Meter Installation - Installer Skipped a Breaker Pole, Resulting in Voltage Line Harness Being Wired Incorrectly