Single Core Solar Cable 6mm2

Single Core Solar Cable 6 mm² — TUV EN 50618 H1Z2Z2-K 1500V DC Photovoltaic Cable

Our 6 mm² single core solar cable is the preferred specification for commercial and industrial PV systems where higher string currents or longer string cable runs demand a larger conductor cross-section to control voltage drop and I²R losses. Constructed with a Class 5 tinned copper conductor and cross-linked polyolefin (XLPO) insulation and sheath, this cable is TUV approved to EN 50618 (H1Z2Z2-K) and rated at 1500V DC.

The 6 mm² conductor offers approximately 40% lower resistance than 4 mm² — translating directly into reduced power losses over long string runs in large rooftop or ground-mount arrays. This is particularly significant in hot-climate installations where high ambient temperature de-rates ampacity and makes larger conductors more economical over a 25-year system life. The tinned copper conductor resists the galvanic corrosion that occurs when bare copper contacts the tin-plated copper pins in standard MC4-compatible connectors.

Key Design Features

• Class 5 tinned copper conductor — 6 mm² for higher ampacity and lower voltage drop
• XLPO insulation and sheath — rated 90°C continuous, 120°C peak conductor temperature
• TUV approved to EN 50618 / H1Z2Z2-K; compatible with IEC 62930 and IEC 61730
• Rated 1500V DC for modern high-voltage string inverter systems
• Temperature range ‑40°C to +90°C ambient
• UV, ozone, and weather resistant outer sheath for 25+ year outdoor service
• High flexibility for MC4 connector crimping and panel frame routing
• Available black and red for string polarity identification

Electrical & Mechanical Specifications

Typical Applications

• Commercial rooftop solar string wiring (50–500 kWp systems)
• Long string runs (>30 m) in large ground-mount solar farms
• High-current strings with bifacial or high-efficiency modules
• Industrial carport PV installations with extended cable routes
• Agricultural agrivoltaic systems with widely spaced panel rows
• Utility-scale solar farms requiring low-loss DC string cables

Selection Guide

4 mm² vs 6 mm² — When to Upgrade?

Upgrade from 4 mm² to 6 mm² when: string cable one-way length exceeds 25 m; string current exceeds 15A; ambient temperature regularly exceeds 60°C; or when a lifetime energy yield calculation shows the reduced I²R loss of 6 mm² delivers a positive ROI within 5–8 years of system operation.