Product Overview

16mm DC Solar Cable is a heavy-duty photovoltaic cable for DC circuits that carry more current than standard collection wiring can handle efficiently. It occupies a specific role in larger solar installations: the transition zone between mid-range collection cable and full trunk-line conductor. When the DC side of a project starts concentrating serious power into fewer, longer circuits, 16mm cable keeps that power moving with minimal loss and solid thermal margin.

Technical Parameters

Parameter	Specification
Conductor Size	16 mm²
Conductor Material	Tinned copper, multi-stranded
Cable Type	Single-core PV DC cable
Rated Voltage	1000V AC/1500V DC
Insulation	Cross-linked low-smoke halogen-free compound
Outer Sheath	UV-resistant halogen-free compound
Temperature Range	-40°C-90°C
Short-Circuit Temperature	250°C (5s)
Approx. Outer Diameter	~9.6 mm
Approx. Weight	~215 kg/km
Flame Performance	Low smoke, halogen-free, flame-retardant
Color	Black, red, or custom
Certification Basis	TUV PV cable standard

Where 16mm Cable Fits

Not every circuit in a solar project needs heavy cable. But certain circuits do,and using undersized cable on those circuits costs real energy. 16mm DC Solar Cable is designed for the specific sections of a PV system where current concentration, cable distance, or both push lighter cable sizes past their efficient operating range.

High-Current DC Collection

After multiple strings merge at a combiner box, the outgoing circuit carries their combined current. In larger systems, this aggregate current demands a conductor that can handle the load without excessive heating or voltage drop. 16mm cable is sized for exactly this kind of duty.

Long Routing to Centralized Equipment

Industrial solar projects frequently place inverters in dedicated electrical rooms, sometimes 50, 70, or even 90 meters from the nearest array section. Over these distances, every step up in conductor size pays back in reduced line loss. 16mm cable makes that payback meaningful without moving to the heaviest cable in the range.

Voltage-Drop-Sensitive Design

When energy yield modeling shows that DC-side losses are eating into project economics, upgrading the collection cable is one of the most direct fixes. 16mm cable provides a substantial reduction in per-meter resistance compared to 10mm, tightening voltage drop across the route.

Application Scenarios

Large Commercial Rooftop Systems

Big-box retail, logistics centers, and multi-story commercial buildings generate enough DC current to justify 16mm cable on their main collection runs. The cable handles the power density of large rooftop arrays while keeping losses in check across building-length cable paths that often include vertical risers and horizontal cable tray sections.

Industrial Solar with Separated Equipment

Manufacturing plants and heavy industrial sites tend to keep electrical equipment away from production areas. This creates long DC cable routes between the rooftop or ground-mounted array and the inverter room. 16mm cable is a practical solution for these runs - heavy enough to perform well, but not so heavy that it creates installation difficulty in cable trays and conduit systems.

Distributed Utility-Type Installations

Some projects sit between commercial and utility scale, large enough to need structured DC collection, but not large enough to justify full utility-grade infrastructure. 16mm cable serves these installations well, providing the conductor capacity needed for organized power routing from field combiner boxes to central conversion equipment.

Selection Guide

16mm DC Solar Cable is the right choice when the circuit is clearly a collection or feeder line, not a string cable. It belongs in the design when:

Aggregate circuit current exceeds the practical range of 10mm cable
Cable routing distance is in the 50–90 meter range
The project is large commercial, industrial, or distributed utility scale
Voltage drop analysis identifies DC-side losses as a meaningful yield concern

For lighter collection duties and shorter distances, 10mm cable is usually sufficient. For the heaviest DC trunk lines such as very high current, very long distance, or centralized inverter architecture, 25mm cable provides the maximum capacity in the TUV solar range.

After-Sales and Project Support

We provide specification confirmation, cable sizing review, and technical parameter matching as part of the supply process. For project buyers and EPC contractors, documentation support covers datasheets, test reports, and compliance materials tailored to the destination market.

After delivery, support includes order tracking, quality follow-up, and coordination for any replacement or supplementary supply needs. Long-term supply agreements are available for distributors and repeat project buyers.