Installation Instructions - enphase M175-24-240-S Installation And Operation Manual

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Installation Instructions

WARNING: Before installing the Enphase Micro-Inverter, read all
instructions and cautionary markings in the user manual and on the
Enphase Micro-Inverter and the photovoltaic array.
WARNING: All electrical installations shall be done in accordance with
all local electrical codes and the National Electrical Code (NEC),
ANSI/NFPA 70.
WARNING: Connecting the Enphase Micro-Inverter to the electrical
utility grid must be done only after receiving prior approval from the
utility company.
WARNING: Only qualified personnel must connect the Enphase Micro-
Inverter to the electrical utility grid.
WARNING: Risk of electric shock. Normally grounded conductors may
be ungrounded and energized when a ground fault is indicated.
Installation of the Enphase Micro-Inverter System involves the following key steps:
1 Installing the AC branch circuit junction box
2 Attaching the Enphase Micro-Inverters to the racking
3 Connecting the Enphase Micro-Inverter wiring harnesses
4 System Grounding
5 Enphase Installation map and Connecting the PV modules
NOTE: It is recommended that all Micro-Inverters be installed and all
system inter-wiring connections completed prior to installing the PV
modules. Please refer to the Quick Install Guide at the end of this
document for a diagram of the Enphase Micro-Inverter System. Each
step of these installation instructions is numerically referenced in the
Quick Install Guide drawing.
WARNING: DO NOT connect Enphase Micro-Inverters to the utility
grid or energize the AC circuit(s) until after completing Step 5 of these
installation instructions.
Page 6 Copyright Enphase Energy Inc. 2008 Release 1.4