FAQ List

Can they withstand harsh outdoor weather conditions

Absolutely. Our line hose covers are professionally treated with anti-UV, anti-corrosion and weather resistance. They can stably resist strong sunlight, high temperature, rain, humidity and seasonal temperature changes without deformation or performance degradation.

Are line hose covers reusable

Yes. Standard line hoses and protective covers are reusable. As long as there is no damage, crack, aging or insulation failure after use, they can be cleaned and stored properly for repeated construction use, saving project costs.

What sizes of line hose covers do you provide

We offer a complete range of specifications covering different conductor diameters and voltage levels. Our products are compatible with common overhead lines, cables and wire harnesses used in distribution and transmission power grids, supporting customized sizes for special working scenarios.

Are your line hose covers insulated for high-voltage work

Yes. All our line hoses and covers are made of high-quality insulating materials, with excellent high-voltage insulation performance. They are specially designed for power live working environments and can effectively isolate charged conductors to avoid electric shock risks.

Do your Hot Line Clamps support long-term outdoor use

Yes. All hot line clamps adopt high-strength alloy materials and anti-corrosion surface treatment. They can withstand wind, rain, salt spray and thermal cycling for stable long-term outdoor operation.

How to avoid galvanic corrosion when using Hot Line Clamps

Match the clamp material with the conductor material. For dissimilar metal connections such as copper to aluminum, choose bimetallic hot line clamps to prevent electrochemical corrosion and extend service life.

What is the difference between aluminum and copper hot line clamps

Aluminum alloy clamps are lightweight, cost-effective and ideal for aluminum conductor connections. Copper or bronze clamps offer higher conductivity and better corrosion resistance, perfect for high-current and coastal corrosive environments.

What conductor types are compatible with your Hot Line Clamps

Our hot line clamps are versatile and fit common overhead conductors, including AAC, AAAC, and ACSR conductors, suitable for most distribution and transmission line tapping projects.

Can Hot Line Clamps be used on live energized lines

Discover the core advantages of CONWELL live-working products: superior dielectric strength, international standard compliance, and rugged durability for high-voltage safety.

What safety precautions are required for live line work

Operators must be professionally certified, equipped with standard PPE, and use matched insulated live working tools. All operations must follow official power safety operation specifications.

What are the core advantages of CONWELL live working products

With 20 years of industry experience, our products feature reliable insulation performance, strong mechanical durability, high safety factor, stable performance under long-term load, and full compliance with international safety specifications.

Can live working products help reduce power outage losses

Absolutely. Live line operations avoid traditional power cut maintenance, greatly reduce power outage time, ensure stable power delivery, and lower economic losses for power enterprises and end users.

Why use professional live working tools instead of ordinary tools

Ordinary tools lack reliable insulation and safety structure. Professional live working series products feature standardized insulation performance, anti-fatigue structure and load durability, which effectively prevent electric shock risks and ensure operator safety.

Are your live working tools compliant with international standards?

Yes. All CONWELL live working series products strictly meet global electrical safety and performance standards, including IEEE standards and relevant national certification requirements, ensuring safe and standardized field operation.

What are Live Working Series products used for

Live Working Series products and live line tools are specially designed for power grid maintenance, line repair, installation and grid upgrading under energized conditions. They allow field crews to perform operations without cutting off power, ensuring continuous power supply.

Can copper cable lugs be used for underground wiring

Tinned copper cable lugs are suitable for underground use with extra waterproof protection.

What surface treatments do you have for copper cable lugs?

We supply bare copper and tinned copper finishes to meet different application needs.

What is the advantage of copper cable lugs over aluminum ones

Copper features better conductivity, ductility and oxidation resistance for long-term safe use.

Can copper cable lugs work under high current

Know the high current performance of copper cable lugs and how to avoid overheating under heavy load.

Can copper cable lugs work under high current

Standard copper lugs support high current load, please match the specification with your actual current demand.

Are copper cable lugs corrosion-resistant

Pure copper lugs have good anti-corrosion performance, and tinned copper types further enhance durability in humid environments.

    What causes bimetal cable lugs to overheat during operation

    Common reasons: incorrect model selection, poor crimping, reversed installation of bimetal cable lugs, loose bolts or overload current.

    Do you accept customized bimetal cable lugs

    Sure. We support OEM and customization on size, hole position, surface treatment and logo for bimetal cable lugs.

    What is the working temperature of bimetal cable lugs?

    The normal working temperature of our bimetal cable lugs ranges from -40℃ to +90℃, and it can withstand short-time overheating.

    Can tin-plated bimetal cable lugs be used outdoors

    Yes. Our tin-plated bimetal cable lugs have excellent anti-corrosion performance, suitable for outdoor, humid and coastal working conditions.

    What types do you supply bimetal lug

    We supply compression type, bolted type, short barrel, long barrel, single-hole, double-hole and insulated sheath series. Full range covers 10mm² ~ 630mm².

    Can I use one model for both copper cable and aluminum cable

    Yes. Follow the rule: Aluminum cable connects to the aluminum barrel; copper terminal connects to the copper end. Do not reverse installation.

    What are the main advantages over ordinary copper or aluminum lugs

    It effectively prevents galvanic corrosion between copper and aluminum. It features low contact resistance, stable electrical performance, good mechanical strength, and adapts to temperature changes. It is the safest solution for connecting aluminum cables to copper terminals.

    What temperature range can aluminum cable lugs withstan

    How many crimp points are needed for an aluminum cable lug

    Is surface cleaning required before crimping aluminum lugs

    Yes. Aluminum easily forms an oxide layer with high resistance. Remove oxide film, dust and grease on cable strands and lug inner wall before crimping.

    What types of aluminum cable lugs are there

    Main types: compression type (crimp lugs), bolted type, long barrel type, short barrel type, single-hole /double-hole lugs. Compression lugs are the most widely used for general electrical projects.

    Can aluminum lugs be used with copper cables

    Not recommended for direct use. Copper and aluminum produce galvanic corrosion under current and moisture, leading to loose contact, overheating and safety hazards. Use bi-metal (copper-aluminum) lugs instead.

    What’s the difference between aluminum lugs and copper lugs

    1、Material & cost: Aluminum is lighter and cheaper; copper has better conductivity.

    2、Application: Aluminum lugs match aluminum cables; direct copper-aluminum connection easily causes galvanic corrosion.

    3、Weight: Aluminum lugs are much lighter, ideal for long-distance overhead lines.

    How to ensure reliable connection of mechanical lugs

    Tighten bolts to specified torque value, clean cable strands and terminal surfaces, avoid loose wiring and excessive bending stress.

    Are mechanical cable connectors reusable

    Absolutely. You can loosen bolts, adjust cables and reinstall repeatedly without damaging the lug body or conductive performance.

    What voltage and current ratings apply to mechanical lugs

    They comply with low-voltage and medium-voltage power systems, matching corresponding ampacity and insulation grades according to wire cross-section.

    What cable sizes do mechanical lugs fit

    They match standard AWG/kcmil stranded copper and aluminum conductors, ranging from small low-current wires to large high-power heavy-duty cables.

    Do mechanical connectors resist corrosion and oxidation

    Yes, they are tin-plated or aluminum-alloy treated to prevent galvanic corrosion, oxidation and poor contact in outdoor, humid and harsh environments.

    What industries use cable lugs

    Cable lugs are widely used in:

    • Power distribution systems
    • Electrical control panels
    • Renewable energy systems (solar/wind)
    • Automotive and EV power systems
    • Industrial machinery

    How are cable lugs installed

    Cable lugs are typically installed by:

    1. Stripping the cable insulation
    2. Inserting the conductor into the lug barrel
    3. Crimping using a hydraulic or mechanical crimping tool
    4. Securing the connection to the terminal point

    What is the difference between copper lugs and aluminum lugs

    Copper lugs have higher conductivity and durability, making them suitable for most industrial applications. Aluminum lugs are lighter and more cost-effective but require proper anti-oxidation treatment during installation.

    What is a mechanical cable lug used for

    Mechanical lugs securely connect electrical cables to breakers, busbars, transformers and equipment terminals, relying on bolt compression instead of crimping for stable long-term conductivity.

    Do cable lugs support high voltage applications

    Yes. Properly rated cable lugs are designed for low, medium, and high-voltage applications, depending on material thickness, insulation requirements, and certification standards.

    Can cable lugs be customized

    Yes. Cable lugs can be customized in terms of:

    • Hole size and shape
    • Barrel length
    • Material (copper, tinned, aluminum)
    • OEM branding or stamping

    What materials are cable lugs made of

    Most cable lugs are made from copper, tinned copper, or aluminum. Copper lugs offer excellent conductivity, while tinned copper provides better corrosion resistance, especially in humid or outdoor environments.

    Q1.What is a mechanical cable lug?

    A mechanical lug is a heavy-duty electrical connector that uses screws or bolts to secure a conductor, rather than requiring specialized crimping tools. They are designed for easy installation in the field and are often used for larger cables in electrical and construction applications.

    Is the clamp easy to install in the field?

    Yes, the clamp is designed for easy installation, which can save time and reduce the need for specialized tools or extensive training.

    Q2.Can the clamp accommodate different cable sizes?

    Yes, it is designed to accommodate cable sizes ranging from 15 to 95mm², offering versatility for various cable specifications.

    Q1.What materials are used in the construction of the High Electric Power ABC Accessories Tension Clamp?

    The clamp is made from high-quality materials such as PA66 (a type of nylon) and aluminum alloy, which provide a combination of strength, durability, and resistance to weather and aging.

    Q2.How to select cable lug size?

    Selecting the correct lug size depends entirely on matching its rated conductor range to the precise cross-sectional area of the copper cable.

    Q1.How does a mechanical lug work?

    Lugs are crimped or bolted to the end of a wire, creating a secure connection to a terminal or bus bar. They often feature a mechanical set screw or compression mechanism for a reliable and durable attachment. Splices are connectors designed to join two or more wires together, ensuring electrical continuity.

    Q6.Are CONWELL Dead End Clamps reusable?

    No. They are designed for single use to ensure consistent clamping force, insulation protection, and long-term reliability under mechanical and environmental stress.

    Q5.What are the key features of CONWELL Dead End Clamps?

    • Corrosion-resistant aluminum alloy body

    • Pre-assembled, ready-to-install design

    • Operating temperature range: -20°C to 90°C

    • Applicable Conductor Cross-Section: 16 mm² – 150 mm²

    Q4.Do CONWELL Dead End Clamps come with third-party test reports?

    Yes. All CONWELL Dead End Clamps are supported by independent third-party test reports, verifying compliance with relevant performance, safety, and durability standards.

    Q3. What standards do CONWELL Dead End Clamps comply with?

    CONWELL Dead End Clamps are manufactured in compliance with the international standard NFC33-042,EN50483-3, ensuring safety and operational performance.

    Q2. How does the Dead End Clamp prevent damage to the conductor insulation?

    It uses specially designed UV-resistant plastic wedges to grip the conductor evenly without cutting or crushing the insulation. This ensures long-term insulation integrity and extends the conductor’s service life.

    Q1.What is a dead end clamp used for in covered conductor systems?

    A dead end clamp securely anchors and terminates covered conductors at line ends or directional changes, providing mechanical support and electrical insulation while protecting the conductor’s outer insulation.

    Q1. What is the material of teeth?

    A.We have three material:Aluminum,copper and brass.

    Q2. What is an Insulation Piercing Connector (IPC)?

    An IPC makes electrical connections without stripping insulation. Its internal teeth pierce the insulation to contact the conductor directly.

    Q3.Where are CONWELL IPCs used?

    They are commonly used in overhead power lines, street lighting, and utility branch connections for fast, maintenance-free installation.

    Q4.What sizes or cable ranges are supported by CONWELL Insulation Piercing Connectors?

    CONWELL Insulation Piercing Connectors support a wide range of conductor sizes—from 1.5 mm² to 240 mm²—ensuring compatibility with diverse power distribution requirements for both aluminum and copper cables.

    Q5.Are insulation piercing connectors reusable?

    No. They are designed for single use only to ensure a permanent, safe, and reliable connection.

    Q2.How about your experience?

    A.We are only produce insulation piercing connector for 21 years with all test equipments available in my lab and nation
    production certificate.

    Q3. What’s the payment term?

    A. We accept TT, 70% deposit and 70% balance against copy of BL, Western Union, L/C is ok!

    Q4. How’s the delivery time ?

    A. Usually it will take about two weeks for the order of 100,000pcs for production

    Q5. Tell me the standard of package?

    A. For inner box and master carton are made as per international standards,and we can make special design for you if need.
    Also if necessary, will be packed in pallet to avoid any damage.

    Q6. Could you offer Form A or C/O ?

    A. It totally not a problem. We can prepare relative documents to forgin affairs office or other office to apply for this certificate.

    Q1: Can I use a lightning arrester as an insulator in a pinch?

    A: No. Their functions are not interchangeable. A lightning arrester conducts surge current, while an insulator blocks current entirely.

    Q2: What happens if I install them in the wrong locations?

    A: Misplacement can lead to failures like flashovers, arc faults, or damaged equipment.

    Q3: Are there combined units that offer both functions?

    A: No single component provides both surge protection and insulation. They must be used together but perform separate tasks.

    Q4: How often should arresters and insulators be checked or replaced?

    A: Inspection intervals depend on the environment, but typically every 3–5 years. Check for signs of wear, tracking, or contamination.

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