Installation Guide DLX seriesL00410622-01 13 Ensure that the conductors are listed for PV applications and the site environment, andthat they have the correct color coding.2.4. Electrical InstallationContact the local utility company for interconnection agreements and power approvalbefore connecting to the grid.Correct electrical connection is critical for achieving a safe, long-term and reliableoperation of the entire PV system.NOTICEOnly persons who are qualified to install high voltage electrical equipment and arefamiliar with the electrical regulations applicable to the installation site may installthe inverter. This is to ensure a safe connection and avoid electrocution!DANGERNever work with live wires! All work on the inverter must be performed withdisconnected terminals, as contact with live wires may cause serious injury ordeath!2.4.1. Connection AreaThe DC connections are achieved by the use of a Stringbox with DC switch and three setsof DC connectors. The connection of the AC and the network cables are with screwterminals and a RJ45 connector.Figure 2.4.1: Stringbox with DC switch1. CAN bus terminal2. RS-485 terminal3 Ethernet port4. Internal DC terminal blocks, +POSand -NEG5. Internal DC ground receptacle,GND/PE6. Stringbox equipped with DC switch7. Internal AC terminal block