Installation Manual

Page 29

Installation

2.6.1 Inverter Power Identiﬁ 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 speciﬁ 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 chaﬁ 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.