13/09/2024 13:07:14
Wall Mount an Expansion Unit
Note
Follow all Powerwall 3 guidance for choosing a
location to install Expansion units, clearance requirements,
and instructions to remove the units from packaging and transport them with the
Powerwall dolly.
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Determine whether Expansion units will be connected to
the left or right side of Powerwall 3, or to both sides. The
following table provides all allowable harness combinations (applicable to both
left and right side):
Harness 1 Harness 2 Harness 3 Tesla P/N 1875157-40-x - - Tesla P/N 1875157-20-x Tesla P/N 1875157-20-x - Tesla P/N 1875157-20-x Tesla P/N 1875157-05-x Tesla P/N 1875157-05-x Tesla P/N 1875157-05-x Tesla P/N 1875157-05-x Tesla P/N 1875157-05-x CAUTIONUsing any other harness combination will result in excessive wire length, impacting product performance.NoteThe Expansion harnesses plugged in to the left and right ports on Powerwall 3 can be different harness models (e.g. Tesla P/N 1875157-05-x on one side and Tesla P/N 1875157-40-x on the other). -
Determine which Expansion Harness length will be used
based on the planned distance between the units:
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Safely shut the system
down:
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To lift and transport the Expansion unit, follow all
instructions in STEP 2: Remove Powerwall 3 from Packaging and Transport Using the Powerwall Dolly to use the Powerwall dolly, noting where the
two lift handles are connected on the Expansion (X):
-
Using a drill and level, mount
the Expansion unit bracket to the
selected wall. See Powerwall 3 Wall Bracket Anchoring Details for Wall-mounting or Ground-mounting on Approved Foundation for additional details on the type and
number of fasteners to use.
NoteThese bracket measurements are the same for both Expansion and Powerwall 3 units.WarningOnly install fasteners in the (4) slots on the horizontal bracket segments. Do not install fasteners on the vertical (center) segment, as these are not structural mounting holes.
- Move the dolly toward the wall, positioning the Expansion unit so that the mounting cleats are just above the flanges on the bracket.
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Lower the Expansion unit until both the upper
and lower sets of cleats engage the flanges on the bracket.
CAUTIONConfirm the unit is fully seated on all four cleats before proceeding.
- Clean the front edge of the Expansion unit enclosure with a microfiber cloth to remove any debris that might interfere with the seal.
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Carefully remove the glass front cover from its packaging and, using a
microfiber cloth, clean the sealing gasket around the edge of the front cover to
remove any debris that might interfere with the seal.
CAUTIONTake extreme care when handling the sealing gasket. Damage to or contamination of the gasket or its mating surface could compromise Powerwall's ingress protection, resulting in product damage.
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Carefully install the glass front cover:
- Before removing the Expansion Harness protective packaging, mock up the cable routing by holding the Expansion Harness against the wall, confirming each connector reaches its Expansion port. If either or both connectors do not reach the Expansion port, use a longer Expansion Harness.
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Connect the Expansion unit to the Powerwall 3 (or to another Expansion unit):
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Plan the Expansion Harness cable
routing, noting the following:
- The minimum bend radius of the cable is 95 mm (3.75 in). Bending the cable to a lesser radius may result in damage to the Expansion Harness
- When a long Expansion
Harness must be used, route and secure the cable so that there is no
slack; the following examples illustrate some of the ways cable slack
can be consumed (note the Bridgeport US-6171 straps represented in black):NoteTake care to route and strap the Expansion Harness so that it forms right angles and generally looks as neat as possible. Do not leave the Expansion Harness drooping or otherwise routed sloppily.
- Each unit (Powerwall 3 or Expansion) must only be connected to another unit via one harness. Do not connect two units using two separate harnesses
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Secure the Expansion Harness cable using Bridgeport US-6171 straps, noting the
following requirements for strap placement:
Strap Placement Maximum Distance Measurement Color in Diagram Each end of Expansion Harness 483 mm (19 in) from connector Red Horizontal Run 610 mm (24 in) between straps Purple Vertical Run 915 mm (36 in) between straps Green Inside or Outside Corner 305 mm (12 in) from corner (recommended but not required) Orange NoteKeep the Expansion Harness cable flat and as close to the wall as possible when routing it. -
Plug the remaining Expansion Harness connector into the other Expansion or Powerwall 3. Ensure the connector is fully seated in its port; it will be possible to
confirm the connector is fully seated when there is no gasket exposed.
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Torque the T40 harness screw on
the connector to 100 in-lb (11 Nm).