17. Solar / PV & Renewables · Page 2 of 7
DC-Side SPD Application
Use DC-rated devices at combiners and inverter DC entries.

Ratings
Select Uc for the maximum DC voltage including temperature and design factors.
Location
Combiner boxes and inverter DC inputs are primary nodes.
Polarity & topology
Follow PV SPD wiring diagrams for floating vs earthed DC systems.
