ESS Location Requirements

Clearance Requirements

Requirement	Specification
Minimum clearance on sides	6 in (15.2 cm) to all obstructions. Additional clearance recommended from hot air sources to avoid power limiting.
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) L2-ESS-15kWh: 39.7 in (101 cm) L2-ESS-20kWh: 29.1 in (74 cm) L2-ESS-20kWh+(1) LE-DC-UNIT: 18.5 in (47 cm) L2-ESS-20kWh+(2) LE-DC-UNIT: 7.8 in (20 cm)
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 m³)

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)

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.

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.

Failure to maintain a persistent internet connection may reduce the warranty terms. See the Lunar Warranty for details.

Roof Installation

ESS Installation

Bridge Installation

MSA Controller Installation

Smart Breaker & CTs Installation

Commissioning

Clearance Requirements

Distance between Components

Top Alignment

Network & Connectivity

​Clearance Requirements

​Distance between Components

​Top Alignment

​Network & Connectivity

Clearance Requirements

Distance between Components

Top Alignment

Network & Connectivity