Install the Tesla Remote Meter and CTs

Plan Meter and CT Locations

Before installing the meter and/or CTs, ensure none of the following maximum distances are exceeded:


Distance to Measure	Wiring Option	Tesla P/N (if applicable)	Maximum Distance
Meter to Point of Measurement	CT lead only	2033376-xx-y	1.5 m
Meter to Point of Measurement	If additional length is required: CT extension (3.5 m long)	2060713-xx-y	8.5 m (CT extension (3.5 m) + CT extension (3.5 m) + CT lead (1.5 m) = max 8.5 m)
Meter to Powerwall 3 TACO (RS-485 wired connection)	RS-485 (RS485) harness	2045794-xx-y	1.2 m
Meter to Powerwall 3 TACO (RS-485 wired connection)	If additional length is required: 0.2 - 1.5 mm² communication wiring	Not applicable (wiring supplied by installer)	100 m
Meter to Breaker	Voltage Harness	Not applicable (included in the kit)	600 mm
Meter to Breaker	If additional length is required: 1.5 - 6 mm² AC wiring	Not applicable (wiring supplied by installer)	To maintain accuracy, keep the meter within 61 m of its breaker when using 2.5 mm² wire

Note

A Powerwall 3 site can have a maximum of three Tesla Remote Meters: one connected via RS-485 and up to two connected via Wi-Fi.

Install the Meter

Using the screws provided in the meter kit, attach the meter to the inside of the main distribution board or to another surface.
Connect the voltage line harness leads to a dedicated circuit breaker up to 16 A, of corresponding phase inside the distribution board.
Warning
Before making the AC power connections, turn the AC circuit breaker of the main service disconnect OFF and secure it against reconnection.
Note
If a dedicated circuit breaker is not available, the voltage line harness can be spliced to existing breakers (see Voltage Harness Wiring and CT Placement (1-Phase Service)).
1. Red Wire: Connect to L1 pole
2. White Wire: Connect to L2 pole
3. Blue Wire: Connect to L3 pole
4. Black Wire: Connect to the circuit breaker's Neutral pole or Neutral busbar in the distribution board
Plug the voltage line harness into the meter (see Location of RS-485, AC, and External Antenna Terminals).

Install the CTs

For measuring the site, the CT must be placed around the corresponding conductor wire in the main distribution board, after the supplier meter and ahead of any loads. If the site includes solar equipment, place an additional CT on the solar conductor wire in the distribution board.

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.

To install a CT:

Plug the CT into the corresponding CT terminal on the meter.
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 ➀ (service entrance / grid for Site CTs, solar inverter for Solar CTs). Always verify CTs are in the correct orientation by observing power flow in the Tesla One app.
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 Meter to Powerwall 3 via Wi-Fi

When using Wi-Fi as the connection method, remote meters placed inside of load centers can be subject to signal interference, especially when a panel cover is installed. For best performance, where possible, use the included external antenna and the antenna extension cable to extend the external antenna.

Drill a 6 mm hole in the bottom of the enclosure to prevent water intrusion.
Route the provided antenna extender through the enclosure hole as shown below.
CAUTION
Ensure that the antenna extension cable is routed such that it is not touching any high voltage (HV) components.
Thread the provided lock washer and nut onto the extender, then thread the antenna onto the end of the extender.
Secure the antenna against the bottom of the enclosure.


1	External antenna input
2	External antenna extender
3	Lock washer
4	Nut
5	External antenna

Meter configuration, including pairing the meter via Wi-Fi must be performed during commissioning in the Tesla One app. See commissioning instructions in the Powerwall 3 Commissioning Guide.

Connect Tesla Remote Meter to Powerwall 3 via RS-485

Wire the Tesla Remote Meter to the Powerwall 3 Tesla Asset Controller (TACO) via RS-485 (RS485).

Note

If required, extend the RS-485 harness up to 100 m using 0.2 - 1.5 mm² shielded twisted pair with drain wire.

Plug the 2-conductor RS-485 harness into the RS-485 terminal on 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 + 0.2-1.5 mm² or CAT5
6 RS-485 -

TACO Remote Energy Metering Port Pin	Terminal Name	Wire Gauge
5	RS-485 +	0.2-1.5 mm² or CAT5
6	RS-485 -

Meter and CT(s) configuration must be performed during commissioning in the Tesla One app. See commissioning instructions in the Powerwall 3 Commissioning Guide.

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.

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 commissioning.

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.