Short answer: solar farm EPC electrical accessories should be selected by DC voltage, string design, grounding layout, cable routing, outdoor UV exposure and combiner or inverter interface.
| DC string side | Include PV cable, MC4 connectors, DC SPD, string fuses, cable glands and combiner box accessories. |
|---|---|
| Grounding and bonding | Include ground rods, copper bonded conductors, clamps, exothermic welding and earth bars. |
| Cable routing | Use cable trays, conduits, ties, cleats and supports according to array layout and UV exposure. |
| MV connection | Include MV cable terminations, lugs, surge arresters and transformer accessories where required. |
Solar farm accessories should not mix unrelated DC ratings. PV connectors, SPDs, fuses and cables must match the same system voltage.
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