PDK81301-8*1.5 Subsea Power Watertight Cable – 8-Core 1.5mm² Bare Copper, PP Insulation, TPU Jacket, For ROVs & Underwater Distribution

This PDK81301 subsea power watertight cable is specifically designed for underwater and harsh‑environment applications requiring reliable multi‑conductor power distribution over moderate distances. It integrates eight 1.5 mm² (approx. AWG 16 equivalent) stranded bare copper conductors into a compact, water‑blocked construction suitable for fixed or occasional‑flex installations. All conductors are bare copper to ensure low resistance and efficient current transmission. PP (Polypropylene) provides primary insulation with excellent dielectric properties, very low moisture absorption, and stable electrical performance across a wide temperature range – critical for long‑term underwater service. The outer jacket is extruded from TPU (Thermoplastic Polyurethane) , delivering outstanding abrasion, hydrolysis, and oil resistance, as well as flexibility for handling and deployment. The cable incorporates a multi‑layer watertight construction with water‑swellable tapes and pressure‑resistant fillers to prevent both radial and longitudinal water ingress, ensuring reliable operation under hydrostatic pressure. It is ideal for ROV tether sections, subsea junction boxes, underwater lighting arrays, offshore instrumentation, and marine observatory power feeds – where multiple independent circuits, dependable power transmission, and absolute watertight integrity are essential.

Model number

PDK81301-8*1.5

Specification

8*1.5

Conductor material

Pure copper

Insulation material

PP

Sheath material

Thermoplastic Polyurethane (TPU)

Sheath outer diameter (mm)

12±0.3mm

Sheath color

black

Temperature range

• 40-105℃

Water pressure resistance

10MPA

Key Features – Bare Copper Conductors, PP Insulation, TPU Sheath

Bare copper conductors (8×1.5 mm²) – eight stranded bare copper cores for efficient AC/DC power distribution or multi‑circuit control; 1.5 mm² cross‑section supports up to 10‑12 A per core (depending on grouping and derating).

PP insulation – rated -40°C to +105°C; low dielectric constant, negligible moisture uptake, and resistance to seawater, acids, and alkalis – ensuring stable insulation performance over the cable's lifetime.

TPU outer sheath – polyurethane jacket offers exceptional abrasion, cut, tear, and hydrolysis resistance; remains flexible even at low temperatures and resists oils, greases, UV, and marine fouling.

Watertight integrity – multi‑layer water‑blocking tapes and compact core filling prevent water migration along the cable, even under hydrostatic pressure.

Color‑coded cores – individual conductor colors (e.g., black, brown, blue, green/yellow, grey, white, red, orange) for easy identification and termination in junction boxes or connectors.

Ideal For

ROV and AUV tether sections for distributing power to multiple payloads (lights, cameras, sonar, thrusters)

Subsea junction boxes and power distribution hubs with multiple output circuits

Underwater LED lighting arrays and strobe systems requiring separate feeds for each light head

Offshore platform instrumentation and wellhead control power distribution

Subsea observatories and ocean bottom nodes with multiple sensor power feeds

Marine renewable energy systems (wave/tidal) with internal power wiring

Any subsea application demanding 8‑conductor 1.5 mm² power distribution + watertight integrity without mechanical tension requirements

Conclusion

This PDK81301‑8*1.5 watertight cable provides a reliable, multi‑circuit power distribution solution for a wide range of subsea applications. The combination of bare copper conductors, PP insulation, and a rugged TPU sheath ensures efficient power transmission, long service life, and resistance to seawater and mechanical wear. It is an ideal choice for ROV systems, offshore infrastructure, and oceanographic instrumentation.