©
2017 Sensata Technologies
Page 29
Installation
2.6.1 Inverter Power Identi
fi
cation and Disconnect Location
Requirements
When an inverter is installed in a building, facility or structure, the NEC (National Electrical Code)
requires a label or plaque to be provided. This label/plaque is required to be easily visible and
provide information that informs personnel on the location of all electrical system disconnects. This
is to ensure all power to a building is quickly located and shut down in an emergency. There are
also speci
fi
c requirements for this label/plaque depending on the inverter application, they are:
(A)
Facilities with Standalone Systems
: Any building, facility, or structure with a photovoltaic
power system that is not connected to a utility service source and is a standalone system must
have a permanent plaque or directory installed on the exterior of the building or structure at
a readily visible location acceptable to the Authority Having Jurisdiction (AHJ). The plaque or
directory must provide the location of system disconnecting means and information regarding
whether the structure contains a standalone electrical power system.
(B)
Facilities with Utility Services and PV Systems
: Buildings, facilities, or structures with both
utility service and a photovoltaic system must have a permanent plaque or directory providing
the location of the service disconnecting means and the photovoltaic system disconnecting means
if they are not located at the same location.
2.7 Final
Inspection
1. Verify all cables/conduit runs are secured with wire ties or other non-conductive fasteners to
prevent cha
fi
ng or damage from movement and vibration.
2. Verify strain reliefs or grommets are in place to prevent damage to the wiring or conduit where
it passes through walls, bulkheads, or other openings.
3. Verify all AC connections are correct and torqued to a maximum of 16 in lbf (1.8 N-m).
4. Replace the covers on the main electrical/distribution panel.
5. Replace the chassis access cover.
Info:
If required by code, have the installation inspected by an electrical inspector.
