Step 4 - System Grounding; Step 5 - Enphase Installation Map And Connecting The Pv Modules - enphase M175-24-240-S Installation And Operation Manual

check the Micro-Inverter rating label for the maximum allowable
number of Micro-Inverters on one AC branch circuit.
Install a protective end cap (included in the Enphase Installation Kit)
!
on the open AC connector of the last Micro-Inverter in the AC branch
circuit.
WARNING: Do NOT exceed the maximum number of Micro-Inverters
in an AC branch circuit, as displayed on the unit-rating label. Each
Micro-Inverter AC branch circuit must be sourced from a dedicated
branch circuit protected by a 15A maximum breaker.
WARNING: Unused AC Micro-Inverter wire harness connectors may
be live when the system is energized by the utility system. Make sure
protective end caps have been installed on all unused AC connectors.
NOTE: Be sure to size the AC wire gauge to account for voltage drop
between the AC branch circuit junction box and the point of utility
inter-connection.

Step 4 - System Grounding

Each Enphase Micro-Inverter has been provided with a ground clip that
!
can accommodate a 6-10 AWG conductor.
Route a continuous Grounding Electrode Conductor through each of
!
the Micro-Inverters and AC branch circuit junction box to the NEC
approved AC grounding electrode.
Note: The AC output neutral is not bonded to ground inside the Micro-
Inverter.

Step 5 - Enphase Installation Map and Connecting the PV Modules

The Enphase Installation Map is designed to be a diagrammatic
representation of the physical location of each Enphase Micro-Inverter in your
PV installation. This information will be used by Enphase to provide you with
detailed information about the performance of your PV system and graphically
visualize your PV system on the Enphase Enlighten website. A simple
rectangular matrix has been included in the Appendix of this manual for your
use. Feel free to provide your own matrix layout if a larger or more intricate
installation map is required.
Each Enphase Micro-Inverter has two removable labels located on the
!
top cover. Peel one of the labels from each Enphase Micro-inverter and
affix it to the respective location on the Enphase installation map.
Send the installation map to Enphase after completion. Enphase
!
prefers to receive a digital copy of the installation map via an upload
Page 8 Copyright Enphase Energy Inc. 2008 Release 1.4