© 2019 Enphase Energy Inc.
10
Installing the AC Battery
Steps one through four describe how to install the wall-mount bracket
and junction box wiring, while steps five and six describe mounting the
battery and energising the system.
1. Choose a Location for the AC Battery
The AC Battery housing is an IP-20 rated metallic enclosure. The
terminal blocks on the wall-mount bracket accept a maximum
conductor size of 4mm
2
.
a.
Following local standards
, choose a wall in a well-ventilated,
indoor location (like a garage) that is shielded from direct
sunlight, away from moisture, and where the ambient
temperature and humidity are within -20° C to 45° C and 5% to
95% RH, non-condensing.
NOTE
: If the AC Battery heats up, it responds by
reducing operation to correct the internal temperature
of the battery.
b.
Ensure that the mounting location can sustain the weight of
the AC Battery and wall-mount bracket
(25 kg or 55 lbs per
battery).
c.
Plan the mounting location to be at least 300 mm (one foot)
off the ground and 300 mm (one foot) from the ceiling. Keep
the battery(ies) away from falling or moving objects, including
motor vehicles.
WARNING
: If mounted in the direct path of a motor
vehicle, we recommend a 36-inch minimum (91 cm)
mounting height.
d.
Ensure that there are no pipes or electrical wires where you
plan to drill.
e.
Plan to maintain at least 300 mm (one foot) of clearance in
front of each battery.
f.
Consider the dimensions of the AC Battery, easy access, height, and length of cable when selecting
the location.
g.
Do not block the vents or allow liquids to contact the AC Battery. The AC Battery is not waterproof.
h.
Select a location where you can interconnect with the site’s switchboard (load centre) using an
appropriate branch circuit.
i.
Following local standards
, decide whether to connect using external conduit or by wiring inside the
walls. This determines which knockouts to use in the junction box. Check if an AC isolator is needed.
Plan the location for the AC isolation switch, if needed.
j.
If you are installing more than one AC Battery, continue to maintain minimum required clearances as
shown in Step 2.
Choose a location for the
AC Battery
Install the wall-mount
bracket
Install the AC isolator
(if required)
Wire the junction box
Mount the AC Battery on
the wall
Energise the system
