ABB MICRO-0.25-I-OUTD-US-208/240, Product Manual

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1- Introduction and safety
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eneral installation warnings
The inverter is designed and tested according to international safety requirements (UL1741/
IEEE1547); however, certain safety precautions must be observed when installing and
operating this inverter. Read and follow all instructions, cautions and warnings in this
installation manual.
It is required that the CDD be installed with any MICRO inverter in compliance with
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communication system inside the MICRO transmits information to the CDD that
analyzes and manages data. See CDD product manual and/or Quick Installation
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E
lectrical connection warnings
This grid-tied inverter system operates only when properly connected to the AC utility
grid. Before connecting the grid-tied inverter to the AC utility grid, contact the local power
distribution company to receive the appropriate approvals. This connection must be made
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Wiring methods used should be in accordance with the National
Electric Code, ANSI/NFPA 70 and/or any prevailing local codes and
regulations.
The AC output (neutral) is not bonded to ground. The input and
output circuits are isolated from the enclosure and the system
grounding must be installed per the requirements of the National
Electric Code, ANSI/NFPA 70, and is the responsibility of the installer
It is the responsibility of the installer to provide external disconnect
switches and Overcurrent Protection Devices (OCPD) as required
by National Electric Codes and other prevailing regulations.
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maximum branch circuit overcurrent protection in accordance with
the National Electric Code (ANSI/NFPA 70).
S
afety instructions
Normally grounded conductors may be ungrounded and energized when a ground-fault
is indicated resulting in risk of electric shock. Always test voltage with a voltmeter before
touching.
Install the inverter in accordance with the electrical standards prescribed by the applicable National Electric
Code (NEC),and/or by other local codes and regulations.