Blue Wire: If using the CT 3 port, splice the
blue wire with the red L2 wire as shown below;
otherwise cap the blue wire
White Wire: Connect the white wire to the
Neutral busbar
Note
If a dedicated circuit breaker is not available,
the voltage line harness can be spliced to existing
breakers.
Note
For
the Remote Energy Meter
to function properly, the voltage line harness
leads must be connected to the correct breaker
phases. The following are common reasons for
the voltage line harness being miswired to the
incorrect phases:
Some breaker types cross phases so that the
breakers are on the opposite phases from the supply lugs
Some localities do not follow the L1 = black, L2
= red wire color scheme, which can result in
incorrectly identifying phase by wire color
Plug the voltage
line harness into the meter.
Install the CTs
To install a CT:
Plug the
CT into the CT port on the meter.
If installing Site CTs:
Plug the CT measuring L1 into the CT1 port.
Plug the CT measuring L2 into either the CT2 or
CT3 port.
If installing a Solar CT:
IF the CT is measuring L1, plug it into the CT1
port.
IF the CT is measuring L2, plug it into either
the CT2 or CT3 port.
Note
Only (1) CT is required to measure Solar because
total power output is calculated by the
software.
Pinch the
CT to open it, then close the CT around the
conductor(s) being measured.
Note
Ensure the CT is installed so that the side with
white text 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 1. CT
Orientation in Relation to Power Flow
Note
Ensure the CT closes completely. If the CT is not closed,
it will not measure properly. This is especially
relevant if installing a CT around multiple
conductors, or around large gauge wire.
Connect Tesla Remote Energy Meter to Powerwall 3 / Backup
Gateway 2
Connection Option 1: Wire Tesla Remote Energy Meter via RS-485:
For Powerwall 3
installations, wire the Tesla Remote Energy Meter
to the Powerwall 3
Tesla Asset Controller (TACO) via RS-485:
Note
If
required, extend the RS-485 harness up to 164 ft
(50 m) using 24-16 AWG (0.2-1.5 mm2) shielded twisted pair with drain
wire.
Plug the 2-conductor RS-485 harness into the port
on the top of the meter.
Connect the harness leads to the TACO by
inserting them in the corresponding Remote Energy Meter connector.
TACO Remote Energy Metering Port
Pin
Terminal Name
Wire Gauge
5
RS-485 +
24-16 AWG (0.2-1.5 mm2 or CAT5 (24 AWG)
6
RS-485 -
For Powerwall+
or Powerwall 2 installations, connect the Tesla Remote Energy Meter
to the Backup Gateway 2 Site Controller via
RS-485.
Plug the 2-conductor RS-485 harness into the port
on the top of the meter.
Connect the harness leads to the Backup Gateway 2
by inserting them in the corresponding Comms connector.
Backup Gateway Comms Port Pin
Terminal Name
Wire Gauge
2
RS-485 +
24-16 AWG (0.2-1.5 mm2
3
RS-485 -
Note
Ports 5 and 6 can be used instead of 2 and 3, but
only (1) meter can be connected to Backup Gateway
2.
Note
If extending the RS-485 harness with wiring that includes a
metal shield or drain wire, cut the excess shield and/or
drain and insulate it with electrical tape.
Note
If the system includes Backup Switch or Gateway 3, do not attempt to connect the RS-485 harness to the
Backup Switch or Gateway 3 communication connector. It must be connected to Powerwall 3 (or Tesla Remote Energy Meter can be connected to the Site Controller wirelessly as
noted below).
Connection Option 2: Connect Tesla Remote Energy Meter via
Wi-Fi:
Install the external antenna on the end of the Remote Energy Meter. If
installing the Remote Energy Meter in a metal enclosure:
Drill a ¼-inch hole in the bottom of the enclosure.
Using the provided antenna extender, route the antenna
through the bottom of the enclosure as shown below.
Meter configuration, including pairing the meter via Wi-Fi will be
performed during Device Setup in Tesla One.
Power On the Meter
Once the meter and CT(s) have been installed, the meter breaker can be
closed to power on the meter for device setup.
CAUTION
For any changes to meter wiring and/or CT placement, always
OPEN the meter breaker to power the meter off
before performing any work.
NoteIf a dedicated circuit breaker is not available, the voltage line harness can be spliced to existing breakers.NoteFor the Remote Energy Meter to function properly, the voltage line harness leads must be connected to the correct breaker phases. The following are common reasons for the voltage line harness being miswired to the incorrect phases:
NoteEnsure the CT closes completely. If the CT is not closed, it will not measure properly. This is especially relevant if installing a CT around multiple conductors, or around large gauge wire.
