Copper Braided Wire, Cable & Flexible Conductors
Carsai manufactures custom copper braided wire, braid cable and flexible copper conductors for grounding, bonding, power distribution and industrial electrical connections.
Our braided products are manufactured from multiple fine copper wires woven into flat, tubular or customer-defined conductor shapes. They can be supplied in continuous rolls, cut to length or converted into finished flexible assemblies with compressed ends, copper terminal plates, cable lugs and mounting holes.
Available options include:
- Bare and tinned copper wire
- Flat or tubular braided construction
- Custom copper cross-section
- Different braid widths and thicknesses
- Fine-wire and high-flexibility designs
- Continuous roll material
- Cut conductor lengths
- Copper terminal plates
- Straight, bent or offset terminals
- Heat-shrink or sleeve protection
- Prototype and volume quantities
Send us the required wire gauge or copper cross-section, braid shape, width, thickness, finish, length and quantity for a project-specific quotation.
For our complete range of copper braid rolls, busbars, grounding straps and finished connectors, visit our Copper Braid Manufacturer page.
What Is Copper Braided Wire?
Copper braided wire is a flexible electrical conductor made by weaving numerous small copper wires together.
Unlike a solid copper bar, the individual wires can move slightly relative to one another. This allows the finished conductor to bend, twist and absorb vibration while maintaining electrical continuity.
Depending on its construction, braided copper wire may be used for:
- Grounding and earthing
- Electrical bonding
- Transformer connections
- Battery connections
- Switchgear
- Generator connections
- Busduct interfaces
- Flexible power conductors
- Cable shielding
- Industrial machinery
- Moving electrical assemblies
A braid may be supplied as unfinished roll material or manufactured into a completed electrical connection.
The buyer should therefore specify whether the requirement is for braid alone or for a finished component with terminals, mounting holes, plating and insulation.
Copper Braided Wire, Cable and Braid Terminology
International buyers use several names for similar woven copper conductors.
Common descriptions include:
- copper braid wire
- copper braid cable
- braided copper electrical wire
- flexible braided copper wire
- flexible copper braided wire
- flexible copper braid wire
- flat copper braided wire
- flat braided wire
- flat braid wire
- flat copper braid wire
Less natural search phrases such as braided wire copper, braid wire copper and cu braided wire normally refer to the same general family of copper braided conductors.
“Cu” is the chemical symbol for copper, so a buyer requesting cu flex braided tape is normally searching for a flat, tape-shaped flexible copper braid.
Although these names overlap, the actual product must be defined by its copper cross-section, wire diameter, braid density, dimensions and terminal requirements.
Copper Braid Cable
A copper braid cable is a woven copper conductor supplied in a cable-like continuous or cut length.
It may be manufactured as:
- Flat braid
- Tubular braid
- Round braid
- Flattened tubular braid
- Bare woven conductor
- Tinned woven conductor
- Insulated flexible conductor
- Finished cable with terminals
Unlike a conventional stranded cable, copper braid may not have an outer insulation jacket unless one is specifically requested.
A braid cable can therefore refer to an exposed woven conductor or a protected finished assembly. Buyers should clearly state whether insulation is required.
Copper braid cable is commonly selected where the conductor needs:
- Greater flexibility than a rigid copper strip
- A low installation profile
- Vibration resistance
- Movement in several directions
- A broad terminal contact area
- Customized finished ends
Flat Copper Braid Cable
A flat copper braid cable uses a low-profile woven conductor rather than a round cable structure.
The flat shape provides several practical advantages:
- Reduced installation height
- Easy routing along flat surfaces
- Broad contact area
- Compatibility with busbar terminals
- Flexible movement
- Convenient supply in rolls
- Easy conversion into grounding straps and jumpers
Flat braid is commonly used inside electrical cabinets, transformers, battery equipment and industrial machines where available space is limited.
A flat cable may be manufactured in various widths and thicknesses. However, width alone does not determine its electrical capacity.
Two 25 mm-wide braids can have different copper cross-sections because their wire sizes, braid densities and overall thicknesses differ.
For accurate selection, specify both the physical dimensions and actual copper area.
Bare Copper Braided Wire
Bare copper braided wire is manufactured from uncoated copper wires.
It provides high conductivity and is commonly selected for indoor or protected electrical applications, including:
- Switchgear
- Transformers
- Electrical cabinets
- Industrial power supplies
- Protected grounding systems
- Rectifiers
- Enclosed battery equipment
Bare copper may gradually oxidize when exposed to moisture, contaminants or outdoor conditions.
The environment and required service life should therefore be considered when selecting between bare and tinned copper.
Bare braid is generally appropriate when:
- The equipment operates indoors
- Humidity is controlled
- The conductor is protected by an enclosure
- No plated finish is specified
- The mating terminal is suitable for bare copper
Tinned Copper Braided Wire
Tinned copper braided wire is manufactured from copper wires protected by a tin surface.
Tin is commonly selected to improve resistance to oxidation and corrosion. It is especially useful for:
- Battery cabinets
- Outdoor equipment
- Marine electrical systems
- Solar and energy storage equipment
- Humid industrial environments
- Grounding and bonding straps
- Connections to tinned terminals
Closely related purchasing descriptions include:
- tinned copper braid wire
- tinned copper wire braid
- tinned annealed copper wire braid
- tinned copper braid cable
- tinned flat copper braid cable
These phrases describe similar products, but the exact construction may differ.
For example, a tinned braid cable may be supplied as continuous roll material, while a tinned flat copper braid cable may be cut and fitted with terminals for a particular piece of equipment.
Annealed copper is softer than hard-drawn copper and can provide improved flexibility. A tinned annealed copper wire braid may therefore be selected where both corrosion protection and repeated movement are important.
Flexible Braided Conductors
A flexible braided conductor provides electrical continuity while allowing movement between connected components.
The related phrase flexible braid conductor describes the same general product category.
Applications include:
- Connecting vibrating transformers
- Bonding electrical enclosure doors
- Bridging busbar sections
- Connecting generators to switchgear
- Joining battery modules to contactors
- Grounding moving machine parts
- Connecting busducts to fixed equipment
The required flexibility depends on:
- Individual wire diameter
- Copper temper
- Number of wires
- Braid angle
- Braid density
- Conductor width
- Copper cross-section
- Flexible length
- Terminal construction
Finer copper wires normally create a softer conductor. However, the braid must still contain enough copper for the required current.
A highly flexible conductor with insufficient copper cross-section can overheat, while an excessively thick braid may be too stiff for the required movement.
Copper Flexible Braided Cable
A copper flexible braided cable can provide multidirectional movement that is difficult to achieve with a rigid copper bar.
Compared with stacked copper foil, braid is generally softer and better able to accommodate movement in several directions.
A flexible braided copper cable can be used where equipment experiences:
- Vibration
- Repeated movement
- Thermal expansion
- Mechanical shock
- Installation misalignment
- Changing terminal positions
For short high-current connections, the braid may be fitted with solid copper terminals.
For longer routed connections, it may be supplied as a flexible conductor with lugs or protective covering.
Flat Braided Copper Wire Versus Conventional Cable
Flat braided copper wire and conventional stranded cable can both provide flexible electrical connections, but they are used differently.
Flat braided wire
Flat braid commonly provides:
- Low installation height
- Wide contact surfaces
- High flexibility
- Easy bonding to flat metal components
- Custom terminal plates
- Compact grounding connections
- Direct connection to busbars
Conventional cable
A normal cable commonly provides:
- A round insulated structure
- Convenient routing over longer distances
- Standard crimped cable lugs
- Mechanical protection from an outer jacket
- Familiar cable-management methods
Flat braid is often preferred for short equipment connections, grounding straps and vibration-resistant links.
Cable is often preferred for longer insulated runs that require routing through equipment.
Flexible Braided Copper Plates
The phrases flexible braided copper plate and flexible braided copper plates generally describe finished braided conductors combined with solid copper terminal plates.
The flexible central section is made from woven copper braid, while the plates provide rigid mounting surfaces.
A completed assembly may include:
- One or several copper braid sections
- Solid copper terminal plates
- Drilled or punched mounting holes
- Straight or bent terminal geometry
- Bare or plated surfaces
- Optional insulation over the braid
Copper plates are useful when the equipment requires:
- Multiple mounting holes
- Large electrical contact areas
- Precisely controlled hole spacing
- Rigid terminal palms
- Bent or offset connections
- Several braids installed in parallel
The terminal plate may be wider than the braid to provide a larger mating surface.
The two terminal plates can also have different shapes. One end may connect to a transformer palm, while the other connects to a narrower copper busbar.
Electrical Applications
Grounding and bonding
Copper braided wire is widely used for grounding and bonding enclosure doors, panels, machine frames and electrical equipment.
The braid maintains continuity while allowing movement.
Transformers
Flexible braid can connect transformer terminals to switchgear, rigid busbars or busducts while absorbing vibration.
Battery and energy storage equipment
Braided conductors may connect battery modules, contactors, fuses, disconnect switches and distribution units.
Tinned copper is frequently selected for these applications.
Switchgear and power distribution
Flat copper braid can connect circuit breakers, switches and rigid busbars where mechanical movement or installation tolerance must be accommodated.
Generators and rotating equipment
Generators and motors produce vibration that should not be transferred directly to rigid electrical conductors.
Cable shielding
Tubular copper braid may be used around electrical cables to provide electromagnetic shielding or a grounding path.
The braid coverage, wire size and termination method must match the shielding requirement.
Selecting Copper Braid Wire by Size
Copper braid wire can be specified by:
- Width and thickness
- Actual copper cross-section
- AWG equivalent
- Wire diameter
- Weight per unit length
- Continuous current
- Fault-current requirement
Width should not be used as the only purchasing specification.
A wider but lightly woven braid may contain less copper than a narrower, denser braid.
For quotation, provide:
- Braid width
- Braid thickness
- Actual copper cross-section
- Wire diameter when specified
- Overall or roll length
- Bare or tinned finish
- Operating current
- Required quantity
Terminal and End Options
Finished braided conductors can include:
- Flattened braid ends
- Compressed copper sleeves
- Welded copper plates
- Brazed terminals
- Ring cable lugs
- Two-hole lugs
- Fork terminals
- One-hole mounting palms
- Multiple-hole terminal plates
- Bent or offset terminals
The terminals should have enough electrical contact area for the conductor current.
Terminal flatness, hole position, plating and mating-surface condition all affect connection resistance and temperature rise.
Insulation and Protective Coverings
Copper braid wire can be supplied bare or with additional protection.
Available options may include:
- Heat-shrink tubing
- PVC sleeves
- Flexible protective tubing
- Partial insulation
- Abrasion protection
- Phase or polarity identification
The covering should remain flexible enough for the intended movement.
A thick or rigid sleeve can reduce flexibility and concentrate bending stress near the terminal ends.
Manufacturing and Inspection
A typical manufacturing process includes:
- Confirming copper material and wire specification
- Setting the required braid construction
- Braiding the copper wires
- Flattening or forming the conductor
- Supplying it in rolls or cutting it to length
- Preparing terminal components
- Compressing, welding, brazing or attaching the ends
- Drilling or punching mounting holes
- Applying plating when required
- Adding insulation or protective sleeves
- Inspecting the finished product
- Packing the conductor or assemblies
Inspection may include:
- Braid width and thickness
- Copper cross-section
- Overall length
- Wire and braid condition
- Terminal dimensions
- Hole diameter and spacing
- Terminal flatness
- Surface plating
- Insulation position
- Loose or damaged wires
Information Needed for a Quotation
To receive an accurate quotation, please provide:
- Required wire gauge or copper cross-section
- Flat, tubular or another braid shape
- Bare or tinned copper
- Braid width and thickness
- Individual wire diameter when specified
- Roll length or finished-part length
- Continuous or fault current
- Terminal or plate dimensions
- Hole size and spacing
- Plating requirement
- Insulation requirement
- Prototype quantity
- Production quantity
- Annual demand
For finished assemblies, send a drawing showing the flexible section and terminal design.
Frequently Asked Questions
Is copper braid wire the same as copper cable?
Not exactly. Copper braid uses woven wires and may be supplied without insulation. Conventional cable normally uses stranded conductors inside an insulating jacket.
Can you supply copper braid cable in rolls?
Yes. Bare or tinned copper braid can be supplied in rolls according to the required width, cross-section, roll length and quantity.
Can you add copper plates to both ends?
Yes. We can attach or consolidate solid copper terminal plates with customized hole patterns, bends and surface treatments.
What is the difference between bare and tinned braided wire?
Bare copper offers high conductivity for protected environments. Tinned copper provides additional resistance to oxidation and corrosion.
Can flat braided wire carry continuous current?
Yes. The copper cross-section, terminals, length, cooling and allowable temperature rise must be suitable for continuous operation.
Can braided conductors be insulated?
Yes. Heat-shrink tubing, PVC sleeves and other flexible coverings can be evaluated according to voltage, temperature and movement requirements.
Can you manufacture from a sample?
Yes. A sample can help confirm the braid construction, but a dimensioned drawing is recommended for repeated production.
Request a Copper Braided Wire Quotation
Carsai manufactures bare and tinned copper braided wire, flat braid cable and flexible conductors for grounding, power distribution and industrial electrical connections.
Specify the required wire gauge or copper cross-section, braid shape, width, thickness, finish, terminal design and quantity.
