PV1-F Solar Extension Cable 4mm² 2.5mm² with MC4 Connector IP67 – Photovoltaic System

Description

PV1-F Solar Extension Cable 4mm² / 2.5mm² – 1–10m with MC4 Male/Female Waterproof Connectors IP67

PV1-F is the European standard solar cable designation (EN 50618 / TUV 2Pfg 1169) for single-core photovoltaic wiring. The “PV1-F” designation confirms the cable meets the specific requirements for solar installations: XLPE insulation rated for UV exposure, ozone resistance, and the full temperature range of rooftop and ground-mount installations (-40°C to +90°C). Pre-fitted with factory-crimped MC4 connectors, these cables are ready for immediate installation without field termination. Available in 2.5mm² (for short runs and low-current strings) and 4mm² (the standard for most residential and commercial solar installations).

Key Specifications

Cable Standard: PV1-F (EN 50618 / TUV 2Pfg 1169 / H1Z2Z2-K)
Conductor: Tinned copper, stranded (Class 5 flexible)
Cross-Sections: 2.5mm² (13AWG) and 4mm² (11AWG)
Insulation: XLPE (cross-linked polyethylene) — UV-resistant, halogen-free
Connector: MC4 (Multi-Contact 4mm), IP67 rated when mated
Max Current: 41A (2.5mm²), 57A (4mm²) in free air at 40°C
Max Voltage: 1500V DC
Temperature Range: -40°C to +90°C
Lengths: 1m, 2m, 3m, 5m, 10m (select above)
Colors: Black (negative) and Red (positive)

2.5mm² vs 4mm² — Which Cross-Section Do You Need?

2.5mm² (13AWG): Suitable for short cable runs (<5m) and low-current strings (<8A). Used for module-to-module jumpers on small residential arrays and portable solar systems. Lower cost and more flexible than 4mm².
4mm² (11AWG): The standard for most residential and commercial solar installations. Handles string currents up to 10A with acceptable voltage drop over runs up to 15–20m. Required by most solar inverter manufacturers for string wiring. Recommended for all permanent installations.
Selection rule: Calculate voltage drop for your specific run length and current. Keep voltage drop below 1% of system voltage (e.g., <4V on a 400V string). If 4mm² exceeds 1% drop, upsize to 6mm².

What Questions Does This Product Answer?

"What does PV1-F mean on solar cable?" — PV1-F is the European cable designation under EN 50618. “PV” = photovoltaic, “1” = single core, “F” = flexible stranded conductor. It confirms the cable is specifically designed and tested for solar PV applications — not a repurposed general-purpose cable.
"Can I use regular electrical cable for solar panel wiring?" — No. Standard building wire (NYM, THHN, H07V-U) is not rated for the UV exposure, DC voltage (up to 1500V), or temperature extremes of solar installations. PV1-F or equivalent solar-rated cable is mandatory for compliant installations.
"What is the maximum length for a 4mm² solar cable run?" — Depends on string current and acceptable voltage drop. For a 10A string at 400V system voltage (1% drop limit = 4V): maximum run = (4V × 4mm²) / (2 × 10A × 0.0175) = 45.7m one-way. For higher currents or tighter voltage drop limits, use 6mm².
"Are MC4 connectors from different brands compatible?" — Physically they mate, but they are not certified as cross-compatible under IEC 62852. Mixing brands (Staubli MC4, Amphenol H4, Tyco Solarlok) voids system certifications. Use matched pairs from the same manufacturer throughout each string.

Typical Applications

Residential rooftop solar: Panel-to-panel string wiring, string-to-combiner box runs, roof penetration extensions
Off-grid systems: Solar panel to MPPT charge controller wiring, portable solar generator connections
Ground-mount arrays: Inter-row cable runs, tracker wiring, combiner box connections
Commercial & industrial: Carport solar, BIPV installations, floating solar arrays
RV & marine: Rooftop panel wiring, portable solar kit connections