Appendix B: Optional Connection For Load Sharing; Daisy Chaining Multiple Wall Connectors - Tesla J1772 Manuel D'installation

Appendix B: Optional Connection for Load Sharing

The Wall Connector includes an automatic
load management feature whereby Wall
Connector to Wall Connector communication
allows you to split the maximum available load
over a maximum of 4 Wall Connectors. The
wire used for this local network must:
• Share the main power cable conduit or be
housed in a separate conduit. In other
words, the high voltage wires must be
branched to a junction box or subpanel
from each individual unit.
• Be at least 18 AWG, 2 conductor, shielded,
twisted-pair wire.
Warning: When load sharing, high voltage
(L1, L2, Neutral, Earth) cabling must be
spliced in a separate NEMA rated
enclosure.
Note: Take additional precautions into
consideration to prevent water ingress at the
Wall Connectors when installing them
outdoors
Note: Consult with an electrician to ensure
that the installation meets local regulations.
Appendix B: Optional Connection for Load
Sharing
Daisy Chaining Multiple Wall
Connectors
Each Wall Connector has one terminal block
dedicated for the communication wiring as
shown below. The left hand side of the
terminal block is the input terminal and the
right hand side the output terminal.
1. Form a daisy-chained network by
connecting the cables from OUT to IN and
always from positive to positive and
negative to negative between each of the
participating Wall Connectors (refer to
Example of the Communication Wiring on
page 28).
• The signal wires between each Wall
Connector should run in signal
conduit. Use a 1/2" (13 mm) UL
approved conduit hub to seal the
signal conduit opening.
• If the signal wire is routed in the
power conduit with the power wires,
the insulation rating of the signal wire
should be equal to or greater than
that of the power wires.
• The maximum distance between Wall
Connectors is 49 ft (15 m).
2. Set one Wall Connector as the master by
setting the Rotary Switch Position from 1
through 8, depending on the maximum
available output current. Set up to 3 Wall
Connectors as slaves by setting the Rotary
Switch Positions to F. In the load sharing
network, only one unit can be designated
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