Nstallation; Installation Warnings - ABB UNO-DM-TL-PLUS-US Product Manual

5
Installation
I
nstallation warnings
The inverter must be corrrectly installed, in a suitable location, to operate properly and safely.
Installers must know and understand applicable NEC requirements and any local codes for
photovoltaic systems.
Installers must know and understand OSHA and other applicable safety requirements,
including lockout/tagout procedures.
Remember that when the photovoltaic panels are exposed to sunlight they provide continuous
DC voltage to the inverter. Before installation may begin, photovoltaic panels must be shaded
or isolated.
Before installation may begin, the inverter must be disconnected from the grid (power
disconnect switch open and external AC disconnect locked out/tagged out) .
Limit installation to licensed electricians experienced in PV plant wiring.
Obtain approval of the local AHJ before connecting the inverter to the electrical grid
The equipment owner must post the PPE level (per NFPA TDE-2012, Table 13
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