TERRA DC WALLBOX
2023-20-06
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NOTICE:
The grid connections shown for the various configurations of the DC Wallbox are manda-
tory. Failure to adhere to these instructions may partially or fully void the product warranty,
result in a costly site visit to reconfigure the grid configuration, and/or cause several site
visits for the DC Wallbox commissioning. ABB is not responsible for scheduling delays and
additional costs from not properly planning the installation. If ABB is contracted to perform
the DC Wallbox commissioning, ABB observes the right to charge additional money for
more than one site visit required for the commissioning due to an initial, improper installa-
tion of the DC Wallbox.
Important steps to ensure project success include:
1.
Identify the grid configuration at the location where the DC Wallbox will be installed.
If the grid configuration available is not okay for use with the DC Wallbox, then determine
how to establish the required grid connection. A transformer solution offered by ABB is
available to derive the required grid configuration when the required grid configuration is
not available. Contact your local ABB sales representative for more details.
2.
Select the 1-phase variant of the DC Wallbox according to Section 1.3 titled Terra DC
Wallbox hardware ordering details based on Step 1 above.
3.
Carefully execute a project plan to ensure the correct variant of DC Wallbox is used
on the project and that the project
site’s grid configuration is compatible with the DC Wall-
box.
4.
Verify the actual grid configuration the DC Wallbox is installed in matches the de-
scribed criteria during the DC Wallbox commissioning.
3.2.2
Overcurrent protection device
Both variant of the DC Wallbox is recommended to be fed by the circuit breaker or fuse ratings shown below.
•
1-phase, 208-240V DC Wallbox variant: 2-pole, 125A circuit breaker or fuses
3.2.3
Conduit for power input wires
Both variant of the DC Wallbox supports up to a 1-1/4” trade size conduit connection.
3.2.4
Specification for power input wires
The exact size and type of wires used must be defined by the customer and be protected by customer pro-
vided overcurrent protection according to local codes and regulations.
The input terminals for 1-phase UL variant of the DC Wallbox accept a range of wire sizes from 10 AWG to 0
AWG. Wire terminals are rated 75C.
The 1-phase UL variant DC Wallbox requires Two (2) phase wires and One (1) wire for protective earth.
(2W+G)
All wires 1-phase variant of the DC Wallbox may connect directly to the ABB provided terminals.
The integrity of the electrical grounding is essential. Ensure that the equipment grounding terminal is used
in the device and an actual grounding conductor is installed to provide a path back to the source upstream
panel. (Do not use the conduit or raceway as the sole equipment grounding conductor).
