Step 6: Make Ac Power Connections To Supply And Load Panels - Tesla Powerwall 2 Installation Manual

Step 6: Make AC Power Connections to Supply and Load Panels

In each of the following steps,
•
Strip the ends of the wires, install ferrules, and insert into the corresponding Backup Gateway terminal
lugs.
•
Using an M3 Allen bit, tighten the lugs to 4 Nm.
1. Install 22x55mm DIN-mounted fuse holder and 22x58mm type aM cartridge fuse on the Backup Gat
internal DIN rail. The fuse must be placed in the cable between the Backup Gateway and the grid. See
Appendix D for additional information about fuse requirements.
2. Connect the main service conductors to the Backup Gateway Supply terminals according to
the accompanying table.
CAUTION: Where site-level RCDs are required, one of the following methods must be used to avoid
risk of upstream RCD nuisance tripping:
•
Relocate the site-level RCD into the Backup Gateway enclosure after
•
Use a Type-S time-delayed RCD upstream of Backup Gateway
See Powerwall 2 AC RCD and Fault Protection Application Note
3. Connect the home load panel conductors to the Backup Gateway Backup terminals according to
and the accompanying table.
4. Depending on the quantity of Non-Backup circuits, a Non-Backup panel will be required. Connect the
conductors (Line(s), Neutral, and Protective Earth) from the Non-
Non-Backup terminals.
Non-Backup circuits include: 3-phase PV inverters, 3-phase loads, large single-phase loads.
5. Connect the non-backup panel conductors to the Backup Gateway Non-Backup terminals according to
Figure 10 and the accompanying table. Any circuits connected here will not be powered when disconnected
from the grid. During on-grid operation, these circuits are still metered by the internal site metering with no
additional metering hardware required.
WARNING: Installing 3-phase equipment on the backup circuit may result in equipment damage.
WARNING: Always ensure all equipment is safely de-energized and locked out prior to working, to
prevent risk of electric shock. To avoid shock hazard, never power on the system without a connection to
Earth at the Gateway. The Earth bar and backplate voltage may float when ungrounded. If conducting earth
loop impedance testing, ensure the Gateway always has a suitable Earth connection.
WARNING: Incorrect wiring of AC conductors presents a risk of electrical shock or damage to
equipment. Before energizing the system, ensure all connections are made correctly according to the
instructions in this document and in accordance with local wiring codes and regulations.
CAUTION: To ensure IP55 ingress protection, appropriate fittings and/or cable glands must be used to
secure all cables passing into the enclosure.
Refer to Appendix B for all wiring requirements and recommendations, including wire colors and gauges.
Refer to Appendix C for example system wiring diagrams.
Powerwall 2 AC Installation Manual
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Figure 10 and
Figure 10
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