Push the rubber ring into the fastening case, Connect the wires of the ac cable as follows, Make sure that all wires are firmly connected – SMA SB 2800i Installation User Manual
Page 19: Push the socket tube firmly onto the socket

Installation Guide
Installation
SB2800i-11:SE0504
SMA Regelsysteme GmbH
17
Connecting of AC output
Please follow the steps below:
1. Disconnect the grid (switch off the circuit breaker), secure it
against accidental reactivation and ensure that it is discon-
nected.
2. The AC connector is a round socket that is suitable to take
different cable diameters. A PG13.5 and a PG16 cable seal
are included with the AC connection socket. Check which
size is suitable for your AC connection cable.
3. Strip the insulation off the ends of the cable and connect the
cable to the AC socket as shown below.
4. Push the rubber ring into the fastening case.
5. Put the cable through the PG13.5 or 16 cable seal. Put the
cable through the fastening case with the rubber ring and
through the socket tube.
6. Connect the wires of the AC cable as follows:
• Protective Earth (PE) to the terminal with the „ ground“ sym-
bol.
• Neutral wire to the terminal marked with „ 1“
• Phase L to the terminal marked with „ 2“
• The terminal marked with „ 3“ is not used.
7. Make sure that all wires are firmly connected.
8. Push the socket tube firmly onto the socket.
Before opening the Sunny Boy check
whether the AC output is safely isola-
ted from supply!