INSTALLATION
Plan a location for the IQ Batteries
The IQ Battery housing is NEMA type 3R and can be installed indoors or out-
doors. The terminal blocks accepts copper conductors of No. 14 - 8 AWG.
A )
Following local standards,
choose a well-ventilated location where
the ambient temperature and humidity are within -15° C to 55° C
(5° F to 131° F) and 5% to 100% RH, non-condensing, preferably out
of direct sunlight. The optimum ambient temperature range for
installation location is 0º C to 30º C (32º F to 86º F).
B )
Ensure that the mounting location can sustain the total weight
of the IQ Batteries and mounting bracket.
Total weight for the IQ
Battery 3, including the IQ Battery base unit, cover and wall mount
bracket, is 52 kg (114.6 lbs). Total weight for the IQ Battery 10,
including the three IQ Battery base units, cover, and wall mount
bracket, is 154.7 kg (341 lbs).
*
WARNING:
The installer should install blocking between studs
to ensure that no single stud carries the entire weight load of the
IQ Batteries.
C ) Plan the mounting location to be at least 15cm (six inches) off the
ground and 15cm (six inches) from the ceiling. Keep the IQ Battery
away from falling or moving objects, including motor vehicles.
*
WARNING:
If mounted in the path of a motor vehicle, we
recommend a mounting height that is 91 cm (36-inch) minimum
above the floor.
D ) Ensure that there are no pipes or electrical wires where you plan to drill.
E ) Plan to maintain at least three feet of clearance in front of each
IQ Battery. Allow at least 15cm (six inches) clearance on top and
bottom of the IQ Battery so that the vents on the top and bottom of
the units are not blocked for air circulation.
F ) Consider the dimensions of the IQ Batteries, easy access, height,
and length of cable when selecting the location.
G ) Select a location where you can interconnect to the Enphase IQ
System Controller.
H ) Follow all local standards.
J ) Review your external conduit plan to determine to which side of the
field wiring compartment you will connect conduit.
K ) Up to two IQ Battery 10 (or six IQ Battery 3) units can be daisy
chained on a single branch circuit. For installations with more than
this number of units, there must be a separate load center, subpanel,
or circuit combiner with over current protection to combine the
daisy chained circuits, and you must run only one circuit for all
the IQ Battery units to the IQ System Controller (or to Enphase IQ
Combiner for grid-tied-only installations). You must select proper
conductors and circuit breakers for these circuits according to local
codes, standards, and other applicable requirements. IQ System
Controller supports up to a maximum of 80 A breaker for IQ Battery
connection circuit.
The subpanel could be a small, two circuit box with circuit breakers.
The circuit breakers in the box would have to be suitable for
back-feeding, per NEC 408.36(D).
Select the right size subpanel and breakers based on the number of
IQ Battery units being installed. Up to four IQ Battery 10s or twelve IQ
Battery 3s can be safely connected to 80A load center.
To do this, you must purchase an off-the-shelf subpanel and install
as shown in the following image:
*
WARNING!
Parallel power production sources only. Do not
connect load circuits.
1
Install the AC disconnect
Following all local codes and standards:
A ) Install an AC disconnect that can break the maximum rated current
of the branch circuit under load. The AC disconnect must be readily
accessible and located within line-of-sight of IQ Battery, per NEC
2017 706.7(A).
B ) Each IQ Battery unit is suitable for use with up to No. 8 AWG wires
on a maximum 40 A branch circuit. If more than 32 A of IQ Battery
batteries (corresponding to a 40 A branch circuit) are installed, a
separate subpanel must be installed between the IQ Battery units
and IQ System Controller to combine the IQ System Controller
circuits together. All circuit breakers in the subpanel must be
suitable for back-feeding, per NEC 408.36(D).
C ) Verify that AC voltage at the site is within range: single-phase L1 to L2
voltage must measure between 211 and 264 VAC, while L-N should
measure between 106 and 132 VAC.
2
Prepare to install the wall-mount bracket
A ) Make sure that the planned position for the wall-mount bracket
meets clearance requirements as shown. The image depicts a
single bracket, but clearances and requirements are the same for
the triple-width bracket.
B) Ensure that the mounting location can sustan the weight of the
IQ Batteries and mounting bracket. Total weight for the IQ Battery
3 including the mounting brackets and cover is 52 kg (114.6 lbs),
while the total weight for IQ Battery 10 including the mounting
bracket and cover add up to 154.7 kg (341 lbs).
C ) Starting at installation position closest to the power source, mark a
level line on the wall as a guide.
*
WARNING!
Multiple risks. Make sure not to drill or attach into
electric wiring or pipes that are in the wall!
3
Minimum 15cm
(6 inches) from
ground/next
surface below
Minimum 15cm
(6 inches) from
ceiling/next
surface above
Blocking installed
between studs
Wood screw
7.6 cm (#10x3”)
IQ Battery
Wall
sheathing
Mounted
bracket
Wood stud
Mounting Surface
Flatness (Across
the Installation
width and height)
recommended to
be within 2mm*
NOTE
:
The above specified surface flatness requirment is applicable to all
the combinations of IQ Battery 3 and 10.
* If the difference in flatness is more than 2mm, recommend installing a substructure like unistrut for
better alignment of the units.
MOUNTING WALL
ENCHARGE
ENCHARGE
Single circuit between combined
Encharge and Enpower
