Solar DC Cables

Solar DC cable does one job under conditions most cable never sees: it sits outdoors, on a roof or in an open field, exposed to full sun and Gulf summer heat for the 25-plus-year life of a PV system, while carrying DC current between modules, combiner boxes, and inverters. The insulation and sheath compounds are cross-linked for higher thermal and UV resistance than standard cable, and the whole construction is rated for a far longer outdoor service life than a general-purpose power cable.

NLS sources single-core solar DC cable to EN 50618, the European reference standard specifically written for PV string and DC wiring, with fine-stranded tinned or bare copper conductor in the sizes PV system designs typically call for, 4mm², 6mm², and 10mm² covering most module string and combiner-to-inverter runs. Double-insulated construction and a halogen-free, flame-retardant sheath are standard on this cable class.

On Saudi projects, solar DC cable runs from PV module strings to combiner boxes and from combiner boxes to inverters, on both utility-scale ground-mount solar farms and rooftop commercial installations. Saudi Arabia's ambient temperature and UV exposure are near the top end of what any cable standard is tested against, which makes the cable's actual heat and UV rating, not just its nameplate voltage class, the detail worth checking before ordering.

A project team sends conductor size and cable length, either from a string design or a PV layout drawing, and NLS returns a priced quote in USD. Solar DC cable is a specified, made-to-standard product rather than a generic commodity cable, so lead time depends on the manufacturer's current production schedule for that specific size.