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China Suppliers Factory 5/16 8.0 mm 3-Conductor AWG 20 Copper Conductor FEP Insulation Cable
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China Suppliers Factory 5/16 8.0 mm 3-Conductor AWG 20 Copper Conductor FEP Insulation Cable

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5/16  8.0 mm

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3-CONDUCTOR, AWG 20 

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Copper  High-Quality Copper Conductor for Optimal Performance

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FEP   Durable FEP Insulation Ensures Longevity

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Semi-conducting   Semi-conducting Filler for Enhanced Electrical Properties

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Semi-conducting   Effective Semi-conducting Shield Layer for Noise Reduction

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Inner  Inner Armor Wires Provide Robust Protection

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Outer  Outer Armor Wires for Superior Durability 

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As a leading manufacturer in China, we take pride in supplying top-quality cables from our factory to suit various applications. Our cable design integrates advanced materials and technology to ensure high performance, longevity, and safety. Choose us as your trusted suppliers for reliable and efficient solutions.

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    Contact us
    Product Details

    Parameter Metric Imperial
    Construction
    Copper Construction 7×0.32 mm 7×0.0129"
    Insulation (FEP) 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 265 g/m 175 lbs/kft
    1 hr. Max Temp 232 ℃ 450 °F
    8 hr. Max Temp 216 ℃ 421 °F
    Cont. Max Temp 200 ℃ 392 °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 @ 1 kHz 175 pF/m 53 pF/ft
    Frequently Asked Questions
    Q

    What type of insulation material is used in this cable, and why is FEP chosen?

    This cable uses FEP (Fluorinated Ethylene Propylene) insulation with a diameter of 1.86 mm (0.0732"). FEP is selected for its excellent high-temperature resistance, chemical inertness, and low dielectric constant, making it ideal for demanding downhole and industrial logging environments.
    Q

    What is the maximum continuous operating temperature of this cable?

    The cable supports a continuous maximum temperature of 200 °C (392 °F). For short-duration operations, it can withstand up to 232 °C (450 °F) for 1 hour, or 216 °C (421 °F) for up to 8 hours, providing operational flexibility in high-temperature well environments.
    Q

    What is the cable's breaking strength and recommended working tension?

    The cable has a total breaking strength of 45 kN (10,100 lbs). The maximum suggested working tension is 22.5 kN (5,050 lbs), which is exactly 50% of the breaking strength — a standard safety factor to ensure reliable and safe long-term operation during wireline logging runs.
    Q

    What are the electrical specifications, including voltage rating and insulation resistance?

    The cable is rated at 1000 VDC. It offers an exceptionally high insulation resistance of 15,000 MΩ·km (50,000 MΩ·kft), ensuring minimal signal leakage. The conductor resistance is 33 Ω/km (10 Ω/kft) at 20 °C, and the capacitance at 1 kHz is 175 pF/m (53 pF/ft).
    Q

    What is the minimum sheave (pulley) diameter recommended for this cable?

    The minimum sheave diameter for this cable is 450 mm (18 inches). Using a sheave smaller than this minimum can cause excessive bending stress on the armor wires and conductor, potentially leading to premature fatigue failure or reduced cable service life.
    Q

    How does the dual-armor construction improve cable performance and durability?

    The dual-armor design features an inner armor (18×0.81 mm, 963 N per wire) and an outer armor (18×1.11 mm, 1808 N per wire), providing a combined mechanical protection system. This layered structure distributes tensile loads evenly, resists torsional forces during deployment, and protects the FEP-insulated conductor from abrasion and external pressure in harsh wellbore conditions.