Twin Solar Cable

10 AWG (6 mm²) Twin Solar Cable is a high-quality, double-insulated PV cable designed for reliable power transfer in solar installations. Built with fine-strand tinned copper conductors and durable UV-resistant insulation, it delivers excellent flexibility, low voltage drop, and long service life in harsh outdoor environments. (Sold per metre)  e.g. 2 units = 2 metres

Ideal for connecting solar panels to MPPT controllers or combiner boxes, this cable is perfectly suited to higher-current arrays, parallel strings, and longer cable runs where efficiency and safety matter.

Typical Ratings (Conservative)

• Continuous current: 35–45 A

• Short-term / peak: up to ~50–55 A (not for continuous use)

These ratings assume:

• Free air or clipped installation

• Normal ambient temperatures

• Single cable run (not heavily bundled)

Practical Solar Use Guidance

Common applications

• Parallel solar strings to MPPT controller

• Combiner box to MPPT controller

• Higher-current PV runs where voltage drop must be minimised

Typical pairing

• 30 A–40 A MPPT controllers (PV side)

• 20 A–30 A fuses/breakers (array dependent)

Many modern panels have ~10–13 A Isc.
Two strings in parallel can approach 20–26 A, where 6 mm² becomes the better choice over 4 mm².

Installation Factors That Affect Rating

Current capacity must be de-rated when:

• Cables are run in hot roof spaces

• Multiple PV cables are bundled together

• Long conduit runs restrict airflow

In these cases, stepping up to 10 mm² may be appropriate even if current alone is within limits.

Quick Rule of Thumb

• Single PV string: 4 mm² is usually sufficient

• Two or more strings in parallel: 6 mm² recommended

• High-power arrays / long runs: consider 10 mm²

Summary

10 AWG (6 mm²) double-insulated twin solar cable

• Continuous rating: 35–45 A

• Typical PV use: 20–30 A

• Designed for PV installations to EN 50618 / IEC 62930