Install the Tesla Remote Energy 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 (59 in)
Meter to Point of Measurement	If additional length is required: CT extension (3.5 m (138 in) long)	2060713-xx-y	8.5 m (335 in) (CT extension (3.5 m) + CT extension (3.5 m) + CT lead (1.5 m) = max 8.5 m)
Meter to Site Controller (RS-485 wired connection)	RS-485 harness	2045794-xx-y	1.2 m (4 ft)
Meter to Site Controller (RS-485 wired connection)	If additional length is required: 24 - 16 AWG (0.2 - 1.5 mm²) communication wiring	Not applicable (wiring supplied by installer)	50 m (164 ft)
Meter to Breaker	Voltage Harness	Not applicable (included in the kit)	600 mm (23.6 in)
Meter to Breaker	If additional length is required: 16-10 AWG (1.5 - 6 mm²) AC wiring	Not applicable (wiring supplied by installer)	To maintain accuracy for revenue grade metering (RGM), keep the meter within 61 m (200 ft) of its breaker when using 14 AWG (2.5 mm²) wire

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 15A two pole circuit breaker:
Note
If unsure of the panel phases, see Troubleshooting: Identifying Breaker Phase.
1. Black Wire: Connect the black wire to L1
2. Red Wire: Connect the red wire to L2
3. 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
4. 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 (see Location of RS-485, AC, and External Antenna Terminals).

Install the CTs

To install a CT:

Plug the CT into the corresponding CT terminal on the meter.
- If installing Site CTs:
  1. Plug the CT measuring L1 into the CT1 port.
  2. 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 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 Energy Meter to Powerwall 3

Connection Option 1: Connect Tesla Remote Energy Meter via Wi-Fi:

Install the external antenna on the end of the meter. If installing the meter in a metal enclosure:

Drill a ¼-inch (6 mm) hole in the bottom of the enclosure.
Route the provided antenna extender through the bottom of the enclosure as shown below.
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.

Meter configuration, including pairing the meter via Wi-Fi must be performed during commissioning in the Tesla One app. See Configure Wi-Fi Connected Tesla Remote Energy Meter for commissioning instructions.

Connection Option 2: 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 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 + 24-16 AWG (0.2-1.5 mm² or CAT5 (24 AWG)
6 RS-485 -

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 -

Meter and CT(s) configuration must be performed during commissioning in the Tesla One app. See Configure Wired Tesla Remote Energy Meter for commissioning instructions.

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).

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.