# Onboarding Homeowners
Source: https://installerguides.lunarenergy.com/commissioning/homeowner-onboarding



<Steps>
  <Step title="Download app">
    Have homeowner download the **Lunar Energy App**.

    <a href="https://apps.apple.com/us/app/lunar-energy/id6615061613">
      <img />
    </a>

    <a href="https://play.google.com/store/apps/details?id=com.lunarenergy.app.customer.prod&hl=en_US">
      <img />
    </a>
  </Step>

  <Step title="Setup account">
    Follow app instructions to complete setup and create homeowner account.
  </Step>

  <Step title="System walkthrough">
    Provide homeowner with basic system operation instructions.
  </Step>
</Steps>


# Commissioning the System
Source: https://installerguides.lunarenergy.com/commissioning/installer-commissioning



<Steps>
  <Step title="Download Installer App">
    Download the **Lunar Installer App** from your device's app store.

    <a href="https://apps.apple.com/us/app/lunar-installer/id6670309375">
      <img />
    </a>

    <a href="https://play.google.com/store/apps/details?id=com.lunarenergy.app.installer.prod&hl=en_US">
      <img />
    </a>
  </Step>

  <Step title="Begin commissioning">
    Follow app instructions to begin the commissioning process.
  </Step>

  <Step title="Connect to system">
    Connect via Inverter QR code to pair with the system.
    Refer to the [Installer App Commissioning Guide](https://documents.lunarenergy.com/lunar-installer-app-commissioning-guide) for more info.

    <img />
  </Step>
</Steps>


# Compatible Breakers
Source: https://installerguides.lunarenergy.com/installation/bridge/breakers



| Rating   | Main Breaker             | Branch Breakers                                                                          |
| :------- | :----------------------- | :--------------------------------------------------------------------------------------- |
| **22kA** | Square D QOM2200         | Eaton BQ250250, BQC250250, BR2125, BR2100H, BRN120AF, BRN120DF, BRN260GF                 |
| **10kA** | Square D QOM2200 or none | Eaton BD5050, BJ2200, BRL220CAF, BRN130GF, DNPL1515, SBR215WGF, or BRS feed-through lugs |

## Breaker Hold Down

Required for branch breakers at the bottom of the load tray.

<img />

| Options                 | Description                                                                                                     |
| :---------------------- | :-------------------------------------------------------------------------------------------------------------- |
| **Lunar Hold Down Kit** | Squeeze sides to engage load tray clips. Compatible with full-size, duplex/triplex/quadplex breakers.           |
| **Eaton BRHDK125 Kit**  | Compatible with breakers in the bottom 2 rows. Only compatible with Eaton BRXXXB breakers with hold-down holes. |


# Bridge Location Requirements
Source: https://installerguides.lunarenergy.com/installation/bridge/clearance



<img alt="Clearances for installation of Bridge" />

|                                      |                                                                    |
| :----------------------------------- | :----------------------------------------------------------------- |
| **Minimum Wall Space**               | 28.7 in x 16.1 in wide (72.7 x 40.8 cm)                            |
| **Minimum Clearance on Left Side**   | 2 in (5cm) for 90° door open<br />8.3 in (21cm) for 180° door open |
| **Minimum Clearance on Right Side**  | 0.5 in (1.25cm)                                                    |
| **Minimum Clearance Above or Below** | 2 in (5cm)                                                         |
| **Minimum Space in Front of Bridge** | Abide by local code required clearances.                           |
| **Maximum Height above ground**      | 73.5 incs (187cm)                                                  |
| **Maximum Deviation from Level**     | Side-to-side: +/– 5°<br />Back-to-front: +/– 5°                    |
| **Maximum Distance to ESS**          | 95 ft (29.5 m)                                                     |


# Communication Wiring
Source: https://installerguides.lunarenergy.com/installation/bridge/communication



<Steps>
  <Step>
    Route shielded wires to the Low Voltage Connections.
  </Step>

  <Step>
    Open terminal levers, insert stripped wire (0.4"), and close levers until they click.

    <img />
  </Step>
</Steps>

<Note>
  Terminate the CAN communication cable's drain wire (shielding conductor) at **only one end** — either the inverter or the Bridge.
</Note>

<Note>
  **Rogowski coils (CT)** wiring is required for partial home setup and Power Control System settings. See the [Rogowski coils installation section](/installation/installing-cts) for more details.
</Note>


# Installing Conduit
Source: https://installerguides.lunarenergy.com/installation/bridge/conduit



Lunar Bridge supports conduit connections to the enclosure from the top, bottom, sides, and back of the enclosure

| Entry Location          | Description                                                                                                                              |
| :---------------------- | :--------------------------------------------------------------------------------------------------------------------------------------- |
| **Top**                 | Supports NEMA 4X A-series 2" conduit hubs (sold separately).<br /><br /><img alt="Top Conduit Entry" />                                  |
| **Bottom, Sides, Back** | Dimples for up to 1" field-drilled holes; up to 2" knockouts in select locations.<br /><br /><img alt="Bottom and Side Conduit Entry" /> |
| **Sides (Knockouts)**   | 3/4" half-shear knockouts.<br /><br /><img alt="Location of knockouts and drill guide dimples" />                                        |


# Mounting Bridge
Source: https://installerguides.lunarenergy.com/installation/bridge/mounting



## Wall Bracket Anchoring

2x4 Wooden Studs

| Method            | Stud Requirements                           | Fastener Requirements                                                                              |
| :---------------- | :------------------------------------------ | :------------------------------------------------------------------------------------------------- |
| **Surface Mount** | Min. 1 stud (center or off-center)          | 1x fastener (min. 1/4" dia) into stud (min 2" depth)<br />1x fastener into wall with >=30lb anchor |
| **Semi-Flush**    | 2 adjacent studs 14.5" apart(16" on center) | 4x #8 fasteners (2 per side) into studs (min 1" depth)                                             |

## Surface Mount

<Steps>
  <Step title="Dry fit bracket">
    Dry fit bracket over stud. Mark wall at bottom of Bridge, then measure up 22" to position bracket.
  </Step>

  <Step title="Install bracket">
    Install bracket using min. 2 screws (1 must be in stud).

    <img />
  </Step>

  <Step title="Hang enclosure">
    Hang enclosure on bracket. The Bridge can slide +/- 1" for alignment.

    <img />
  </Step>

  <Step title="Install anchors">
    Secure enclosure by installing two anchors through the lower embosses.

    <img />
  </Step>
</Steps>

## Semi-Flush Mount

Follow [Wall Bracket Anchoring](#wall-bracket-anchoring) instructions.

<Note>
  Enclosure must extend at least 3" from wall surface for door clearance.
</Note>

<Note>
  Door must be capable of opening >= 90°.
</Note>


# Bridge as Service Disconnect
Source: https://installerguides.lunarenergy.com/installation/bridge/service-disconnect



<Steps>
  <Step>
    Remove grid supply lugs (top center) by unscrewing 2x M6 bolts (T25/T27). Save bolts.

    <img />
  </Step>

  <Step>
    Remove and discard the plastic retainer (T25).
  </Step>

  <Step>
    Insert main breaker by engaging bottom tabs into relay cover and rotating top into position.
  </Step>

  <Step>
    Secure breaker tabs with saved M6 bolts. Torque: 75 in-lbs (9 N-m).
  </Step>

  <Step>
    Secure top of breaker assembly with manufacturer bolt or saved screw. Torque: 30 in-lbs (3 N-m).
  </Step>

  <Step>
    Apply Service Disconnect label adjacent to the breaker.

    <img />
  </Step>
</Steps>


# Wiring Specifications
Source: https://installerguides.lunarenergy.com/installation/bridge/wiring



<img alt="Wiring Diagram" />

| Terminal                                                                                                                                       | Wire Gauge                                                                                                                                                                                          | Strip    | Tool                                         | Torque                                                                                                  |
| :--------------------------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------- | :------------------------------------------- | :------------------------------------------------------------------------------------------------------ |
| **A** (Grid Supply L1/L2)<br />**B** (Non-backup Load L1/L2)<br />**C** (Backup Load L1/L2)<br />**E** (Neutral Lugs)<br />**F** (Ground Lugs) | 6 AWG -250 kcmil                                                                                                                                                                                    | 1 in     | 5/16" hex                                    | 250 in-lbs (28.2 N-m)                                                                                   |
| **G** (Ground Bar)<br />**H** (Neutral Bar)                                                                                                    | 4-14 AWG                                                                                                                                                                                            | 0.312 in | 1/8" hex                                     | 10-14 AWG: 20 in-lbs (2.3 N-m)<br />8 AWG: 25 in-lbs (2.8 N-m)<br />4-6 AWG: 30 in-lbs (3.4 N-m)        |
| **J** (Rogowski Coils)                                                                                                                         | 12-22 AWG, Shielded                                                                                                                                                                                 | 0.4 in   | Toolless                                     | Lever arm                                                                                               |
| **D** (Load Tray)                                                                                                                              | **See breaker.** Compatible with Eaton BRHDK125 and Lunar breaker hold down kit (10-005080) where required                                                                                          |          |                                              | For load tray removal <br />T25 fastener: 44.3 in-lbs (5 N-m)<br />(2x) Hex nuts: 62 in-lbs (7 N-m)     |
| **E** (Neutral Lugs)<br />**F** (Ground Lugs)                                                                                                  | Optional: Replace factory terminal with ILSCO PB2300 2-port terminal. Reuse M6 fastener holding existing terminal lug.                                                                              |          | T25 or T27                                   | 115 in-lbs (13 N-m)                                                                                     |
| **G** (Ground Bar)<br />**H** (Neutral Bar)                                                                                                    | Optional: Install ILSCO NBAS-012-2-A for additional terminations. Use (2x) M5 x 14, Steel, Zn-Ni plated bolt to fasten terminal bar                                                                 |          | T25                                          | 35 in-lbs (4 N-m)                                                                                       |
| **A** (Grid Supply L1/L2)                                                                                                                      | Optional: Install Service Disconnect<br />(1x) Center mounting screw<br />(2x) M6 Side electrical screws<br />Reuse Bridge fasteners or use fasteners provided with Square D QOM2XXXVH main breaker |          | T25 (Lunar)<br />T27 (Lunar)<br />Flat (SQD) | (1x) T25 Center Screw: 30 in-lbs (3.4 N-m)<br /><br />(2x) T27 Side Screws: 75 in-lbs (8.5 N-m) for T27 |
| **I** (Neutral-Ground Bond Strap)                                                                                                              | Optional: Install only with Service Disconnect<br />(2x) M6 screws provided with Bridge                                                                                                             |          | T25 or T27                                   | 115 in-lbs (13 N-m)                                                                                     |

<Note>Use minimum 75ºC rated Cu/Al conductors.</Note>


# Bug Barriers & Conduit Covers
Source: https://installerguides.lunarenergy.com/installation/bug-barriers



## Bug Barriers

Wrap the bug barrier around the conduit, tighten the strap, and slide it into the inverter.

<img alt="" />

## Conduit Covers

Install conduit covers on the inverter's left and right sides.

<Note>
  The right-side covers require a removable gap cover for the bottom.
</Note>

<img alt="" />


# Conduit Installation
Source: https://installerguides.lunarenergy.com/installation/conduit



The Inverter has **4** conduit entry points (2 per side) for DC, AC, communication, and ethernet.

<Note>
  When installing EMT conduit, a minimum of 4" of straight conduit is needed to clear the aesthetic covers.
</Note>

<img alt="" />


# ESS Cover Installation
Source: https://installerguides.lunarenergy.com/installation/ess-covers



<Steps>
  <Step title="Install battery covers">
    Place the covers from bottom to top, ensuring the 'reveal' is oriented to alternate between them. Press each cover down until the hook engages. <img />
  </Step>

  <Step title="Prepare for inverter cover">
    Hang the LED and Antenna cable out the side access door. <img />
  </Step>

  <Step title="Install inverter cover">
    Install the inverter cover identically to the Battery Block cover, then connect the LED and antenna. <img />
  </Step>

  <Step title="Install top cover">
    Push the top cover into place. <img />
  </Step>
</Steps>


# Installing Rogowski Coils (CTs)
Source: https://installerguides.lunarenergy.com/installation/installing-cts



Lunar Rogowski Coil CTs enable key functionalities such as **Partial Home Backup** and the **Power Control System (PCS)**. The coils are installed on the service disconnect conductors of a home to provide current measurements to the Lunar System.

## Terminate Coils at Lunar Bridge

Terminate the Coil leads to the labeled terminals **Coil 1A/1B** and **Coil 2A/2B** in the Bridge.

<img />

<Note>
  If a drain wire is present, do not splice or connect it to any conductor or terminal.
</Note>

<Note>
  To extend coil free-end wires, use 12–24 AWG shielded wire (twisted or untwisted). The maximum extension length is 100 feet.
</Note>

## Coil Phase & Polarity

Use the Lunar Installer App to verify the phase (L1 vs. L2) and polarity (positive or negative current) of the coils. To correct the phase or polarity, adjust the wiring terminations at the Bridge:

<img />

* **Coil Phase:** Swap the terminations of Coil 1A and Coil 1B with Coil 2A and Coil 2B.
* **Coil Polarity:** Swap the terminations of Coil 1A with Coil 1B, and swap the terminations of Coil 2A with Coil 2B.

## Installing Coils on Branch Circuit Wires

If physical constraints (such as a 4-wire main breaker) prevent direct coils installation on service conductors, bundle the branch circuit wires instead.

<Steps>
  <Step title="Bundle Feeders">
    Bundle all non-backup load feeders **and** Lunar Bridge feeders within the coils.
  </Step>

  <Step title="Group Conductors">
    * Group all L1 conductors through **Coil 1**.
    * Group all L2 conductors through **Coil 2**.

    <img />
  </Step>

  <Step title="Verify Orientation">
    All wires must be oriented so that the current flow direction to or from the grid is the same.
  </Step>
</Steps>


# Maximizer Installation
Source: https://installerguides.lunarenergy.com/installation/installing-maximizer



## Wiring Connections

<img alt="Maximizer" />

## Mounting Options

| Rail                    | Railess                 |
| :---------------------- | :---------------------- |
| <img alt="Maximizer" /> | <img alt="Maximizer" /> |

## QR Code

<img alt="Maximizer" />

<Note>
  Remove one MAC address sticker for commissioning with the Lunar Installer app. Place it on an array map for tracking.
</Note>


# Maximizer Hub Installation
Source: https://installerguides.lunarenergy.com/installation/installing-maximizer-hub



## Wiring Connections

<img alt="Maximizer Hub" />

## Mounting Options

| Rail                        | Railess                     |
| :-------------------------- | :-------------------------- |
| <img alt="Maximizer Hub" /> | <img alt="Maximizer Hub" /> |


# MSA Controller Installation
Source: https://installerguides.lunarenergy.com/installation/installing-msa-controller



<Note>
  MSA Controller requires [ConnecDER IslanDER MSA](https://connectder.com/products/islandder/) to be installed to function as a microgrid interconnect device.
</Note>

## Installing the MSA Controller

<Steps>
  <Step title="Remove the cover">
    Lift on the 4 flex tabs located on the right and left sides of the cover and pull up.

    <img />
  </Step>

  <Step title="Mount the Enclosure">
    Mount the MSA-Controller enclosure with 2x fasteners.

    <img />
  </Step>

  <Step title="Attach the MSA Cable">
    <img />

    <Note>
      Make sure to fully twist the MSA locking collar clockwise until it **clicks** into the final locked position. Verify it is fully seated past the initial alignment position.
    </Note>
  </Step>

  <Step title="Prepare conduit entry">
    Remove conduit plug from the knockout for the desired inverter wiring entry point.

    **Right knockout:** 3/4", **Left knockout:** 1/2"

    <img />
  </Step>

  <Step title="Land Wires">
    Install the cable gland in the knockout and route inverter communication wires inside the enclosure.

    <img />
  </Step>

  <Step title="Reattach wiring cover" />
</Steps>

## Before You Leave

<Tip>
  Connect the MSA cable to the MSA Controller while leaving the MSA unplugged from the meter socket in a waterproof bag. Commissioning can be completed for all tests except for the Backup Test. The system will operate in on-grid mode. Leave system **ON** when leaving.
</Tip>


# Installing Smart Breakers
Source: https://installerguides.lunarenergy.com/installation/installing-smart-breakers



Available in 15, 20, 30, 40, 50, and 60A, these 2-pole smart breakers feature load control, revenue-grade metering (±0.5%) and GFCI protection. A maximum of **8** breakers can be used per Lunar System, and can be installed inside the Lunar Bridge or any BR-style Eaten panels.

<img alt="Smart Breaker Configuration" />

## Communication Range

Smart breakers communicate wirelessly with the Lunar Bridge or Lunar Meter Socket Adapter Controller (MSA Controller). They can be installed inside the Lunar Bridge or in any [compatible EATON subpanel](https://www.eaton.com/us/en-us/products/electrical-circuit-protection/circuit-breakers/ableedge-smart-breaker-compatibility.html) with maximum distances as detailed below:

| Configuration                     | **Maximum Distance to Lunar Bridge/MSA Controller** |
| :-------------------------------- | :-------------------------------------------------- |
| Free air                          | 75 ft (23 m)                                        |
| Through 1 wall (wood / drywall)   | 30 ft (9 m)                                         |
| Through 1 wall (concrete / brick) | 10 ft (3 m)                                         |

## AC-Coupled PV Requirements

| Requirements                    | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| :------------------------------ | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Maximum AC PV in Backup**     | 11.5 kW combined of non-Lunar AC PV<br /><br />**Examples**<br />(1) 1 x 7.6kW PV inverter and 1 x 3.8kW PV inverter<br />(2) 3 x 3.8kW PV inverters<br /><Note>Up to **8** smart breakers can be used to support multiple AC PV connections. For improved inverter-level monitoring and to prevent ground/arc faults from shutting down all PV, a dedicated smart breaker per AC PV system is recommended. A PV combiner subpanel with a single smart breaker is allowed, but not recommended.</Note> |
| **Maximum AC PV in Non-Backup** | No limit <br /><Note>All non-backup loads and non-backup AC PV must be on the load side of the Lunar Rogowski Coils, along with the backup loads and backup AC PV. Refer to the [Rogowski Coil (CTs) for the Lunar System](https://documents.lunarenergy.com/rogowski-coils-cts-for-the-lunar-system) Application Note.</Note>                                                                                                                                                                         |
| **Compatible PV Inverters**     | All CEC-listed models and makes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| **Lunar DC PV Size**            | 0 - 15kWdc. <br /><Note>DC PV is not required for the Lunar System. DC PV size is independent of AC PV size. Maximizer stringing rules apply.</Note>                                                                                                                                                                                                                                                                                                                                                   |

### AC PV Metering

Smart breaker acts as a metering device for AC PV. No additional CT for PV circuits.
<Note>Rogowski coils may still be required to monitor site import and export for partial home backup (i.e. AC PV in non-backup).</Note>

### Line Side Tap

Install breaker between fused disconnect and AC PV, by following these steps:

1. Turning the fused disconnect OFF.
2. Splicing the inverter output wires inside the inverter enclosure.
3. Splicing there and back to an adjacent 2-space subpanel with a smart breaker.

<Note>Utility coordinated disconnect is not required. It does not touch or modify the tap, nor touch the wires between the tap and the fused disconnect.</Note>

## Wiring Smart Breakers

<img alt="Smart Breaker Wiring Diagram" />

<Danger>
  To avoid nuisance GFCI tripping, connect the load neutral wire directly to the breaker and the breaker's neutral pigtail to the neutral bar.
</Danger>


# Trunk Harness Installation
Source: https://installerguides.lunarenergy.com/installation/installing-trunk-harness



## Connecting Trunk Harness to Inverter

<Steps>
  <Step title="Insert connector">
    Connect the trunk harness into the inverter, ensuring the white tab is down (away from the inverter).
  </Step>

  <Step title="Lock connector">
    Push the white tab up until you hear a **click**, indicating the connector is fully seated and locked in.

    <Note>
      If the tab doesn't move up, push the connector in deeper and try again.
    </Note>
  </Step>
</Steps>

<img alt="Connect Inverter" />

To disconnect trunk harness from inverter, slide the white tab down to unlock, press the center of the square latch, and pull the cable away.

## Connecting Trunk Harness to Battery Blocks

<Steps>
  <Step title="Open cover">
    Open the battery's hinged cover.
  </Step>

  <Step title="Insert harness">
    Align the metal end of the harness with the battery slots and push it in until you hear a **click**.
  </Step>

  <Step title="Secure cover">
    Close the cover. Use a T25 screwdriver to tighten the screw using 3.0 Nm torque.
  </Step>

  <Step title="Organize cables">
    Push the plastic fir tree clips on the harness into the holes on the battery blocks to keep the wires tidy.
  </Step>
</Steps>

<img alt="Connect inverter" />

<Warning>
  LFP and NMC battery blocks use the same wall brackets and covers but cannot be mixed behind the same inverter. Contact Lunar for NMC battery blocks to service or expand existing sites.
</Warning>


# Metal Tapes and Magnet Strap
Source: https://installerguides.lunarenergy.com/installation/metal-tapes



<Steps>
  <Step title="Apply Metal Tape">
    The provided 7-inch metal tape must be attached from the conduit fittings to the inverter wall bracket (extending **2-3"** onto the wall bracket) for both the AC and DC conduits.

    <Warning>
      If conduits are present on both sides, the tape must be applied to both sides.
    </Warning>

    <img alt="" />
  </Step>

  <Step title="Attach Magnet Strap">
    Attach the Inverter magnet strap to the top Battery Block.

    <img />
  </Step>
</Steps>


# ESS Mounting
Source: https://installerguides.lunarenergy.com/installation/mounting



## Step 1: Secure Lifting Tool

Secure the lifting tool to the Battery Block.

<img alt="" />

## Step 2: Mount Battery Block

With a partner, use the lifting tool to slightly tilt the battery to engage the bracket clips, starting from the bottom battery and working up.

<img alt="" />

## Step 3: Align and Secure

Confirm battery block aligns with the wall bracket center. Push down to remove the lifting tool. Repeat for each Battery Block.

<img alt="" />

## Step 4: Mount Inverter

Mount the Inverter onto the wall bracket by tilting slightly to seat it on the 4 hooks.

<Info>
  No lifting tool needed. Ok to grab anywhere on the device.
</Info>

<img alt="" />

<Warning>
  LFP and NMC battery blocks use the same wall brackets and covers but cannot be mixed behind the same inverter. Contact Lunar for NMC battery blocks to service or expand existing sites.
</Warning>

<Warning>
  Always work from the bottom battery block up to the top. Do not attempt to mount or dismount battery block if there are blocks above it.
</Warning>


# MSA Controller Location Requirements
Source: https://installerguides.lunarenergy.com/installation/msa-controller-location-requirements



## Clearance

|                                        |                                         |
| :------------------------------------- | :-------------------------------------- |
| **Minimum Wall Space**                 | 14" x 14"                               |
| **Minimum Clearance Left/Right/Above** | 1"                                      |
| **Minimum Clearance Below**            | 6"                                      |
| **Minimum Space in Front**             | Abide by local code.                    |
| **Maximum Deviation from Level**       | +/- 5° (side-to-side and back-to-front) |

## Distance between Components

| Wiring Distance            | Wire Gauge (AWG)                                                  | Maximum Wire Length |
| :------------------------- | :---------------------------------------------------------------- | :------------------ |
| Inverter to MSA Controller | Cat5e, Cat6, Cat6a, 14 - 22 AWG (shielded, twisted or un-twisted) | 95 ft (29.5 m)      |
| MSA Controller to MSA      | Only use ConnectDER supplied cable (6')                           |                     |


# ESS Location Requirements
Source: https://installerguides.lunarenergy.com/installation/planning-ess



## Clearance Requirements

<img alt="ESS Clearance" />

| Requirement                                                                                                         | Specification                                                                                                                                                                                                  |
| :------------------------------------------------------------------------------------------------------------------ | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Minimum clearance on sides                                                                                          | 6 in (15.2 cm) to all obstructions. <Note>      Additional clearance recommended from hot air sources to avoid power limiting.  </Note>                                                                        |
| Minimum clearance above system                                                                                      | 2.5 in (15 cm)                                                                                                                                                                                                 |
| Minimum wall space for installation                                                                                 | 36.4 in (92 cm) wide. Height depends on quantity of DC ESS units.                                                                                                                                              |
| Maximum height above ground/floor to bottom of ESS for rotary switch on inverter (RSID) to be 6’7” from grade       | L2-ESS-10kWh: 50.4 in (128 cm)<br />L2-ESS-15kWh: 39.7 in (101 cm)<br />L2-ESS-20kWh: 29.1 in (74 cm)<br />L2-ESS-20kWh+(1) LE-DC-UNIT: 18.5 in (47 cm)<br />L2-ESS-20kWh+(2) LE-DC-UNIT: 7.8 in (20 cm)<br /> |
| Maximum height above ground/floor to bottom of ESS where external RSID is field installed less than 6’7” from grade | No limit                                                                                                                                                                                                       |
| Minimum clearance in front of battery                                                                               | Abide by local code                                                                                                                                                                                            |
| Minimum clearance to doors and windows directly entering the dwelling unit (N/A to attached or detached garages)    | Abide by local code                                                                                                                                                                                            |
| Minimum room size for indoor installation                                                                           | 283 cu ft. (8.01 m<sup>3</sup>)                                                                                                                                                                                |

## Distance between Components

| Connection                                   | Max Distance   | Wire Gauge                                                        |
| :------------------------------------------- | :------------- | :---------------------------------------------------------------- |
| Inverter to Maximizer Hub                    | 200 ft (61 m)  | 12 AWG – 4 AWG                                                    |
| Inverter to Bridge (AC)                      | 95 ft (29.5 m) | 8 AWG – 4 AWG                                                     |
| Inverter to Bridge or MSA Controller (Comms) | 95 ft (29.5 m) | Cat5e, Cat6, Cat6a, or 14–22 AWG (shielded, twisted or untwisted) |

## Top Alignment

Use the following measurements to align the ESS, Lunar Bridge, and conduits from the top of the inverter cover.

<img alt="Top Alignment Measurements" />

| Measurement                                              | Value            |
| :------------------------------------------------------- | :--------------- |
| From Inverter Top Cover to Top of Inverter Bracket       | 19 mm (3/4")     |
| From Inverter Top Cover to Lower Conduit Entry Center    | 269 mm (10 5/8") |
| From Inverter Top Cover to Bridge Mount Bolt Hole Center | 92 mm (3 5/8")   |

| Configuration | From Inverter Top Cover to Top of Lowest Battery Bracket | From Inverter Lower Conduit Entry Center to Top of Lowest Battery Bracket |
| :------------ | :------------------------------------------------------- | :------------------------------------------------------------------------ |
| 10 kWh        | 586 mm (23 1/8")                                         | 316 mm (12 1/2")                                                          |
| 15 kWh        | 857 mm (33 3/4")                                         | 587 mm (23 1/8")                                                          |
| 20 kWh        | 1128 mm (44 3/8")                                        | 858 mm (33 3/4")                                                          |
| 25 kWh        | 1399 mm (55 1/8")                                        | 1129 mm (44 1/2")                                                         |
| 30 kWh        | 1670 mm (65 3/4")                                        | 1400 mm (55 1/8")                                                         |

## Network & Connectivity

Reliable internet connection via Wi-Fi (**2.4 GHz only**) or Ethernet is required for firmware updates and warranty compliance. Cellular (LTE CAT M1) is available as a backup connection method.

<Warning>
  Failure to maintain a persistent internet connection may reduce the warranty terms. See the [Lunar Warranty](https://documents.lunarenergy.com/lunar-warranty) for details.
</Warning>


# Stringing Requirements
Source: https://installerguides.lunarenergy.com/installation/roof-design



<img alt="" />

## PV Module Requirements

| Requirement                         | 650W Maximizer | 420W Maximizer |
| :---------------------------------- | :------------- | :------------- |
| Maximum Rated Power Output          | 650 W          | 420 W          |
| Maximum Short Circuit Current (Isc) | 20 A           | 20 A           |
| Maximum Open Circuit Voltage (Voc)  | 75 V           | 60 V           |

## Series String Requirements

| Requirement                                                                | 650W Maximizer                                  | 420W Maximizer            |
| :------------------------------------------------------------------------- | :---------------------------------------------- | :------------------------ |
| Maximum # of PV Modules per String                                         | Typical site: 20 recommended<br />Shaded PV: 24 | 20                        |
| Minimum # of PV Modules per String                                         | 9                                               | 9                         |
| Minimum # of PV Modules within +/- 5° pitch and azimuth                    | <Tooltip>7</Tooltip>                            | <Tooltip>7</Tooltip>      |
| Maximum Usable Power per String                                            | 6.6 kW                                          | 6.6 kW                    |
| Maximum DC Current per String                                              | 16 A                                            | 16 A                      |
| Recommended Max STC Nameplate Power per String<br />for un-shaded PV sites | <Tooltip>8.4 kW</Tooltip>                       | <Tooltip>8.4 kW</Tooltip> |

## Parallel String Requirements

| Requirement                                  | 650W Maximizer           | 420W Maximizer           |
| :------------------------------------------- | :----------------------- | :----------------------- |
| # of Parallel Strings Allowed                | 3                        | 3                        |
| Uneven String length Allowed                 | <Tooltip>Yes</Tooltip>   | <Tooltip>Yes</Tooltip>   |
| Maximum Total DC Current from PV to Inverter | 37.5 A                   | 37.5 A                   |
| Maximum Total Usable Power                   | <Tooltip>15 kW</Tooltip> | <Tooltip>15 kW</Tooltip> |

## Communication Distance

Each Maximizer only needs to be in the communication range of a single Maximizer (or Maximizer Hub) to communicate with the Lunar System.

| Environment    | Wifi Mesh Communication Range (point to point) |
| :------------- | :--------------------------------------------- |
| Metal Roof     | 30 ft (9 m)                                    |
| Any other roof | 60 ft (18 m)                                   |
| Free Air       | 100 ft (30 m)                                  |

<Note>
  420W Maximizers and 650W Maximizers are allowed on the same PV string.
</Note>

<Note>
  Refer to the [Lunar System PV Installation and Troubleshooting Guide](https://documents.lunarenergy.com/pv-installation-and-troubleshooting-guide) for detailed rooftop design and diagnostics instructions.
</Note>

<Note>
  Output voltage from each PV module is individually controlled per each Maximizer to stay within the inverter operating input range. Do not apply string inverter design rules to planning module-level MPPT systems.
</Note>


# Wall Brackets Installation
Source: https://installerguides.lunarenergy.com/installation/wall-brackets



## Step 1: Install Bottom Bracket

Screw the bottom DC ESS unit bracket to wall studs using **two** ¼" lag screws with 2" embedment. See available attachment points below.

<img alt="" />

## Step 2a: Attach Bottom Plate

Attach the bottom plate to the first battery bracket with 4 x T25 fasteners (5.0 N-m ±10% torque) from the Hardware Kit.

<img alt="" />

## Step 2b: Level Bottom Plate (Floor Mount)

For floor mount only, adjust leveling feet to engage with the level concrete floor.

<img alt="" />

## Step 3a: Install Additional Brackets

Seat and align the next battery bracket on top. Attach it to wall studs with two ¼" lag screws with at least 2" embedment, pressing down to prevent gaps. Repeat for remaining DC ESS unit brackets.

<img alt="" />

## Step 3b: Secure Brackets (Floor Mount)

For floor mount only, secure brackets together using the provided T25 fasteners.

<img alt="" />

## Step 4: Install Inverter Bracket

Install the Inverter Bracket on top. Seat it on the battery bracket and screw it into the wall.

<img alt="" />


# Inverter Wiring
Source: https://installerguides.lunarenergy.com/installation/wiring-inverter



## Step 1: PV to Inverter

Land PV in the Inverter DC terminals. <img />

## Step 2: Inverter to Home

Connect the AC output from the inverter to your electrical panel. <img />

## Step 3: Low Voltage Wiring

Complete low voltage connections for communication and monitoring. <img /> <img />

<Note>
  Auxiliary Rapid Shutdown Initiation Device (RSID) can be optionally installed when desired or required by AHJs.
</Note>

<Note>
  Terminate the CAN communication cable's drain wire (shielding conductor) at **only one end** — either the inverter or the Bridge.
</Note>

## Step 4: Closing the Front Door

<Steps>
  <Step title="Connect door capacitor">
    <img alt="" />
  </Step>

  <Step title="Screw the front door closed.">
    <img alt="" />
  </Step>
</Steps>

<Tip>
  Leave the wiring compartment door open during commissioning for easier troubleshooting access. Secure the door after the commissioning job report has been sucessfully submitted.
</Tip>


# Overview
Source: https://installerguides.lunarenergy.com/introduction



# Lunar System Installation Guide

This documentation will guide you through an end-to-end installation of the Lunar System. Visit the [Lunar Installer Hub](https://lunar-installer-portal.webflow.io/) for downloadable manuals, training videos, and other installer resources.

## Installation Steps

<CardGroup>
  <Card title="Roof Installation" icon="solar-panel" href="/installation/roof-design">
    Stringing requirements, Maximizer installation, and Maximizer Hub installation
  </Card>

  <Card title="ESS Installation" icon="battery-full" href="/installation/planning-ess">
    ESS location requirements, mounting, conduit installation, inverter wiring, trunk harness installation, and closeout steps
  </Card>

  <Card title="Bridge Installation" icon="panel-ews" href="/installation/bridge/clearance">
    Bridge location requirements, mounting, conduit installation, and more
  </Card>

  <Card title="MSA Controller Installation" icon="light-switch-off" href="/installation/msa-controller-location-requirements">
    MSA Controller location requirements, and MSA Controller installation
  </Card>

  <Card title="Smart Breaker & CT Installation" icon="square-ring" href="/installation/installing-smart-breakers">
    Installing Eaton AbleEdge Smart Breakers and Rogowski Coil CTs
  </Card>

  <Card title="Commissioning" icon="check-circle" href="/commissioning/installer-commissioning">
    Commission the Lunar System and onboard homeowners
  </Card>
</CardGroup>