Installation Manual

AC Battery Installation
© 2016 Enphase Energy Inc. 141-00036 Rev 01
13
4. Wire the Junction Box
DANGER! Risk of electric shock. Check that the dedicated circuit breaker protecting the
branch where the AC Battery will be connected is turned off before wiring.
WARNING! Risk of equipment damage. Always connect to two Lines (active) and to one
Neutral.
a. Size the conductors (Line, Neutral and Ground) depending on the upstream breaker or fuse. Use 12
AWG to 20 AWG (4 mm
2
to 2.5 mm
2
) wire with maximum 20A branch circuit protection.
NOTE: It is possible to interconnect the AC battery with a large size conductor by splicing a
short piece of 12 AWG to make the final connection.
b. Using the conductors and suitable conduits, connect the AC disconnect (if used) and the first
adjacent AC Battery junction box. Use the openings provided by the knockouts to connect the
conduit and pass the wires through them.
NOTE: Do not modify or rewire the pre-installed wiring or bonding connections in the junction
box.
c. Connect each wire in the junction box to its
corresponding conductor (Line, Neutral and
Ground). Each push terminal accepts two 12 AWG
to 20 AWG conductors (7/16-inch strip length). For
each, use a screw driver to depress and open the
terminal, then insert the stripped conductor.
d. After all wires in the junction box are connected and
secured, check that there are no exposed
conductors.
e. If connecting additional AC Batteries, use another
conduit and set of wires to connect out of the
junction box to the next junction box.
f. Gently arrange all the wires and connectors inside
the junction box and replace the cover. Tighten the
cover screw using a Phillips screw driver.
DANGER! Risk of electric shock. The system
is not ready to be energized! Do not close
the circuit breaker yet.
KEY:
1. Terminal block
2. Ground from previous junction box
3. Ground to next junction box, if needed
4. Neutral from previous junction box
5. Neutral to next junction box, if needed
6. L1 from previous junction box
7. L1 to next junction box, if needed
8. L2 from previous junction box
9. L2 to next junction box, if needed
10. Junction box AC connector
11. L2 from this junction box, to connector
12. L1 from this junction box, to connector
13. Neutral from this junction box to connector
14. Ground from this junction box, to chassis screw