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The process of cabling starts by designing the trenchlines. We recommend design all of them at layer 0, later, this makes it easier to select all of them at once isolating the layer. After finishing with the trenchlines, just proceed with the selection of the PV area:
Whenever a change is made on the trench lines, remember to select them again. This way, we avoid having any further problems with the cabling.
The next step is the cabling generation itself, which can be done using the Auto or Semi-auto modes. The Auto DC/AC cabling mode will just ask to select the Central Inverter/ Transformer and PVcase will make all the connections:
The semi-auto mode permits a higher level of customization. The semi-auto mode allows the selection of individual strings or devices and allows you to specify in more detail the route of the cable. What ultimately forces the software to design the cabling according to the trench lines that are being selected and not the software estimating which ones to use from a handful of selected trenchlines:
Going back to the Overview tab, we can now select the cables of each device. This feature comes in handy to execute an initial assessment of cable lengths:
For a more detailed exploration, we recommend exporting the Bill of Materials. In the Excel environment, we can identify cable sections that may be longer than a previously established value by using Conditional Formating:
In the example above, we have found 2 strings that had a cable length greater than 100 meters. Based on that I can go back to the design to identify the route done by those cables and optimize them if needed.