Electrical Connection And Connection To Electrical Utility Grid; Surge/Lightning Arrestors And Grounding Electrode Conductors - Solectria Renewables PVI 3000 Installation And Operation Manual

PVI 3000/4000/5000/5300
2.3 Electrical Connection and Connection to Electrical
Utility Grid
PVI 3000-5300 PV SYSTEM BLOCK DIAGRAM
Location and Mounting the Inverter
NOTE: Choose the inverter location keeping in mind where any additional disconnects, junction boxes
and/or AC kWh meter (if needed) will be located. One good idea is to mark on the wall (or create a
diagram) where all of the components are to be located. The inverter is set up with integrated AC & DC
disconnects and fused PV combiner to make it very easy and quick to connect the inverter. The fused PV
combiner can also be bypassed using the bypass lug positions.
Refer to Figure 2 for Locations of Features, AC and DC Wires, etc.
WARNING: All electrical installations shall be done in accordance with all local electrical codes and the
National Electrical Code (NEC), ANSI/NFPA 70.
The negative DC photovoltaic connection is grounded within the inverter through the ground fault detection
and interrupt circuit (GFDI). The PV negative should not be grounded at any other point in the system. The
PV positive must never be grounded at any time. (Note that this is reversed for systems using the positive
grounded option.)
AC and DC (PV) Connections:
The PVI 3000-5300 inverters are equipped with covered holes and KOs to fit conduit fittings that are NEC code-compliant for
use with several sizes of rigid and flexible metallic or non-metallic conduit. All conduit and wiring installation is done in the
wiring box. This design allows installation and wiring of the inverter to be done without opening the main inverter enclosure
which should not be opened during installation. AC & DC terminals allow for #10 to #6 AWG copper conductors.
Lightning and Surge Protection:
The inverter is designed with certain protections against surges in voltage including certification to UL1741/IEEE1547
(including ANSI/IEEE 62.41/62.42 as required in the NY SIR), however added protection and solid grounding provisions are
important for best protection against utility surges and surges created by indirect lightning strikes.
* Equipment grounds, grounding electrode conductor
and ground fault detector/interrupter not shown
Fig. 2.3 Simplified electrical connection diagram
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Installation and Operation Manual