Chapter 4: Connecting the AC and the Strings
to the Inverter
This chapter describes how to connect the inverter to the AC grid, and to the strings of
modules with power optimizers.
If using an inverter with a DC Safety Unit, refer to the instructions in
and DC Strings to the DC Safety Unit on page 84.
Refer to the technical specifications provided with the inverter.
Grid Connection Guidelines
In most countries, three phase inverters require neutral connection at all times. In
some countries, the three phase inverters can be connected to delta grids; in other
cases, multiple single phase inverters can be used.
Prior to system installation, refer to:
Three Phase Inverters for Delta Grids application note at
https://www.solaredge.com/sites/default/files/se_three_phase_
Supported Countries application note to confirm compatibility at
http://www.solaredge.com/sites/default/files/se_inverters_
; installing without confirmation may
void the inverter warranty.
For more wiring information refer to the
SolarEdge Recommended AC Wiring
Application Note, available on the SolarEdge website at
http://www.solaredge.com/files/pdfs/application-note-recommended-wiring.pdf
For recommended circuit breaker size per model refer to
Connecting the AC Grid to the Inverter
Use a five-wire cable for three phase connection.The maximum wire size for the input
terminal blocks is 16 mm².
Three Phase System MAN-01-00507-4.2
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Chapter 4: Connecting the AC and the Strings to the Inverter
