DC Cable: There are 2 forms of DC cables, string and modular. Both equally are suitable with solar panels, and 4mm DC PV cables may be hooked up to an inverter by connecting the negative and favourable leads. PV cables and PV wires have insulation components that present electrical insulation https://6mm-dc-solar-cable96848.birderswiki.com/913260/current_carrying_capacity_of_6mm_solar_cable_things_to_know_before_you_buy