Tesla Remote
Meter can be
connected to Powerwall 3 via Wi-Fi
or an RS-485 (RS485) wiring harness.
Figure 1. Location of
RS-485, AC, and External Antenna Terminals
1
External antenna input
2
RS-485
3
AC power
Figure 2. Location of CT Terminals
Note
At the time of publication, Tesla Remote
Meter has
(3) CT terminals. CT4 functionality will be available at a
later date.
Tesla Remote
Meter LED
Tesla Remote
Meter has an LED
which indicates the following status:
Solid green ON
Powered and operational
Figure 3. Tesla Remote
Meter LED
Location
About Voltage Taps and Current Transformer
Connections
The Tesla Remote
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:
The Tesla Remote
Meter
voltage line harness leads must be connected to the
correct phases.
Note
Regardless of the grid type the system is
connected to, Tesla Remote
Meter
must always be connected to L1 and N. If the meter
is connected to L2 and/or L3, but not L1, it will
not be powered.
The CTs must be placed around conductors of the correct
phase:
CT1 = L1
CT2 = L2
CT3 = L3
The following illustrations provide some high
level correct voltage harness wiring / CT installations:Figure 4. Voltage Harness Wiring and CT Placement (1-Phase
Service)Figure 5. Voltage Harness Wiring and CT Placement (3-Phase
Service)
Note
A single Tesla 200A CT can be placed around multiple conductors which
are on the same phase, provided the sum of the conductor’s
current ratings does not exceed the CT's maximum current
capacity. This is especially useful for systems with
multiple solar inverters.Figure 6. CT
Placement Around Multiple Conductors of Same
Phase