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FLEX BRAID JUMPERS FLAT TO FLAT
Manufacturer Resources
Product Specs
- Cable Length:
- 24 in
- Conductor Category:
- Flexible
- Conductor Shape:
- Flat
- Country Of Origin:
- United States (US)
- Material Of Conductor:
- Copper
- Product Group:
- Wire & Cable Management
- Product Type:
- Standard Flexible Braid Connector - 2-Hole to 1-Hole
- Selling Unit Of Measure:
- each
- Type2:
- Flexible braid
- Department:
- Electrical
- Product Subgroup:
- Connectors
Blackburn GA-397-Z-24 – Frequently Asked Questions
1) What is the Blackburn GA-397-Z-24 flexible braid jumper used for?
The GA-397-Z-24 is a flat flexible copper braid bonding jumper, 24 inches long, used to carry ground or bond current across a joint that moves or flexes - expansion joints in busway and raceway, equipment mounted on vibration isolators, hinged enclosure doors, and transformer or motor frames. The braid construction lets the connection flex without work-hardening a solid conductor.
2) How are the ends of the Blackburn GA-397-Z-24 braid jumper drilled - two holes or one?
It's a 2-hole to 1-hole braid connector: one terminal pad takes two bolts, the opposite pad takes a single bolt. That matters when you're landing on a NEMA 2-hole pad at one end and a single stud or tapped hole at the other. If both of your landing points are 2-hole pads, this is not the right jumper.
3) Is the 24 inch length of this Blackburn braid jumper the overall length or the flex length?
The GA-397-Z-24 is catalogued at a 24 inch cable length, and the -24 in the part number is that length. When you're spanning an expansion joint, allow enough slack so the braid is never pulled taut at full joint extension - a jumper under tension stops being a flexible connection.
4) Why use a flat braid jumper instead of a piece of stranded ground wire with lugs?
Stranded wire with crimped lugs is fine for a static bond. Where the connection moves - vibration isolated equipment, hinged doors, expansion joints - repeated flexing fatigues stranded conductor and the crimp barrel. The GA-397-Z-24 uses flexible flat copper braid with integral terminal pads, so the flexing happens in the braid itself and there's no crimp joint at the bend point. Flat braid also lies tight against a surface where round cable would stand off.
5) Is this Blackburn flex braid jumper made in the USA for a Buy American job?
Country of origin on the GA-397-Z-24 is the United States, which is what a federal, transit, or state-funded job will want documented for the bonding jumpers on the submittal.
6) Does the GA-397-Z-24 braid jumper come with bolts and washers?
The jumper is the braid with its drilled terminal pads - two holes on one end, one on the other. Hardware to land it is a separate buy, so pick your bolt diameter, washers, and any anti-oxidant compound to suit the pads you're bolting to.
7) What is the exact part number to order this 24 inch Blackburn flat-to-flat braid jumper?
Order Blackburn GA-397-Z-24. Blackburn builds the GA-397 flat braid jumper in several lengths and the trailing number is the length, so -24 is the 24 inch version. Quoting the full suffix keeps you from receiving a shorter braid that won't span the joint.
8) Is the Blackburn GA-397-Z-24 sold individually or in a pack?
Sold each. The selling unit is a single jumper, so order one per joint or per piece of equipment you're bonding - no minimum pack to break.
How fast can I get the Blackburn GA-397-Z-24 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Blackburn GA-397-Z-24 come with a warranty?
Absolutely. The Blackburn GA-397-Z-24 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Blackburn GA-397-Z-24?
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