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China 5/16 8.0 mm 3-Conductor Cable - AWG 20, Copper, PP Insulation | Reliable Suppliers & Factory
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5/16 8.0 mm
,3-CONDUCTOR，AWG 20
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High-Quality Copper Conductor for Superior Performance
Durable PP Insulation for Enhanced Safety and Longevity
Innovative Semi-conducting Filler for Optimized Performance
Advanced Semi-conducting Shield Layer for Maximum Efficiency
Robust Inner Armor Wires for Enhanced Protection
Durable Outer Armor Wires for Ultimate Durability
Our factory in China supplies top-of-the-line cables, ensuring every product is crafted to meet rigorous quality standards. Explore our offerings and discover why we are trusted suppliers in the industry.
,| Parameter | Metric | Imperial |
| 🔩 Construction | ||
| Copper Construction | 7×0.32 mm | 7×0.0129" |
| Insulation (PP) | 1.86 mm | 0.0732" |
| Number and Size of Wires | ||
| Inner Armor | 18×0.81 mm | 18×0.0319" |
| Outer Armor | 18×1.11 mm | 18×0.0437" |
| Average Wire Breaking Strength | ||
| Inner Armor | 963 N | 216 lbs |
| Outer Armor | 1808 N | 406 lbs |
| 📐 Physical | ||
| Cable Diameter | 8.0 mm +0.13 / −0.05 mm | 0.3150" +0.0051" / −0.0019" |
| Cable Weight in Air | 255 g/km | 171 lbs/kft |
| 1 hr. Max Temp | 150 ℃ | 300 °F |
| 8 hr. Max Temp | 135 ℃ | 275 °F |
| Cont. Max Temp | 121 ℃ | 250 °F |
| ⚙️ Mechanical | ||
| Cable Breaking Strength | 45 kN | 10,100 lbs |
| Maximum Suggested Working Tension | 22.5 kN | 5,050 lbs |
| Minimum Shave Diameter | 450 mm | 18" |
| Cable Stretch Coefficient | 1.35 m/km/5kN | 1.2 ft/kft/klbs |
| ⚡ Electrical | ||
| Voltage Rating | 1000 VDC | 1000 VDC |
| Insulation Resistance | 15,000 MΩ·km | 50,000 MΩ·kft |
| Resistance Typical @ 20 ℃ | 33 Ω/km | 10 Ω/kft |
| Capacitance @ 1kHz | 175 pF/m | 53 pF/ft |
❓ Frequently Asked Questions
Q
What is the maximum continuous operating temperature of this cable?
The cable supports a continuous maximum temperature of 121 ℃ (250 °F). For short-duration operations, it can withstand up to 135 ℃ (275 °F) for 8 hours, or 150 ℃ (300 °F) for up to 1 hour.
Q
What is the cable's breaking strength and recommended working tension?
The cable has a breaking strength of 45 kN (10,100 lbs). The maximum suggested working tension is 22.5 kN (5,050 lbs), which is 50% of the breaking strength — a standard safety factor for downhole cable operations.
Q
What voltage rating does this cable support?
This cable carries a voltage rating of 1000 VDC, making it suitable for a wide range of downhole measurement and logging applications that require reliable DC power transmission.
Q
What is the insulation material and its resistance value?
The cable uses Polypropylene (PP) insulation with a thickness of 1.86 mm (0.0732"). The insulation resistance is rated at 15,000 MΩ·km (50,000 MΩ·kft), ensuring excellent electrical isolation in demanding environments.
Q
What is the minimum sheave diameter required for this cable?
The minimum sheave (pulley) diameter for safe operation is 450 mm (18 inches). Using a sheave smaller than this minimum may cause mechanical stress, armor deformation, or premature cable failure.
Q
How is the dual-armor construction designed, and what are the wire sizes?
The cable features a dual-armor design for enhanced mechanical protection. The inner armor consists of 18 wires at 0.81 mm (0.0319") diameter with an average breaking strength of 963 N (216 lbs) per wire. The outer armor consists of 18 wires at 1.11 mm (0.0437") diameter with an average breaking strength of 1808 N (406 lbs) per wire.