Our braided bonding jumper is a flexible earth strap made from woven copper strands, with a ring terminal crimped on each end. It links cable tray sections, expansion joints, covers, and other metal parts so that electrical continuity is kept across the joint, and it moves with the tray as it expands and contracts. It is available in bare copper and in tinned copper, in lengths and cross-sections made to your needs.
Or email abby@wananelectric.com, or call or WhatsApp +86 18823394830.
Key Features
- Flexible braided copper: bends easily around joints and allows for movement, vibration, and thermal expansion
- Ring terminals on both ends: bolt straight onto the tray, a stud, or an earthing bar [confirm hole size]
- Bare or tinned copper: bare copper for general use, tinned copper for better corrosion resistance in damp or aggressive air
- Cross-section and length to order: made to the bonding requirement of your project [confirm range]
- Fast to fit: no cutting or crimping on site
- Customizable: terminal size, hole diameter, length, and cross-section made to your request
Specifications
| Item | Details |
|---|---|
| Conductor | Braided copper, [confirm: bare or tinned] |
| Cross-section | [confirm, mm²] |
| Length | [confirm, mm, terminal to terminal] |
| Terminal | Copper ring lug, [confirm: tinned or plain] |
| Hole diameter | [confirm, mm] |
| Insulation | [confirm: bare braid or with sleeve] |
| Current rating | [confirm only if tested, otherwise per project specification] |
Where to Use It
- Across cable tray joints and splice plates, where continuity must be guaranteed
- Across expansion joints, where the tray moves
- Between tray and cover, tray and bracket, or tray and earthing bar
- Equipment doors, panels, and moving metal parts
- Outdoor and rooftop tray runs, as part of the bonding system
Bare Copper or Tinned Copper?
| Type | Best for | Points to note |
|---|---|---|
| Bare copper | Indoor, dry routes | Lowest cost. Surface darkens with time |
| Tinned copper | Outdoor, humid, coastal, and industrial air | Tin coating resists corrosion and is better suited to contact with galvanized or aluminum parts |
Good to Know
- Contact must be on bare metal: paint and powder coating insulate, so remove the coating under the lug, or use star washers or similar hardware that bites through it
- Size by the requirement: choose the cross-section by your project's bonding specification, not by looks
- Mind dissimilar metals: copper next to aluminum can corrode. Use tinned copper or a suitable joint compound and hardware, as your specification requires
- Keep it short: use the shortest length that still allows for movement, with a gentle bend and no strain on the lugs
- Check at maintenance: look for loose bolts, corrosion, and broken strands during inspections
Why Choose Wanan
Wanan has been manufacturing cable management products since 2004, with a 20,000 m² factory. We supply EPC contractors, MEP contractors, and distributors, with drawings, OEM/ODM service, and documents such as material certificates and inspection reports on request. Send us the cross-section, length, and hole size, and our team will quote jumpers together with the tray.
Or email abby@wananelectric.com, or call or WhatsApp +86 18823394830.
