Blackburn FBB30-1 FLEXIBLE BRAID 24 KCMIL 30IN LONG

The FBB30-1 is a flexible flat braid bonding jumper, 24 KCMIL, 30 inches long, with a one-hole terminal. It is used where two points have to stay bonded but also have to move or vibrate relative to each other, such as across expansion joints, on equipment doors and hinged enclosure panels, on transformer and switchgear cabinets, and across isolated or shock-mounted equipment. The flat braid construction flexes repeatedly without work-hardening the way a solid conductor would.

It carries UL E3060 and CSA LR29625 file listings, so it can be specified on jobs where the inspector wants a listed bonding jumper rather than a field-fabricated one. Those are the two file numbers to reference in a submittal package.

The conductor is tin-plated copper. The tin plating is what matters outdoors or in damp and corrosive locations: it slows oxidation of the copper strands and keeps the braid from greening at the terminal, which is where a bare copper braid usually fails first. It also gives a more stable contact surface against aluminum or galvanized equipment enclosures.

It is a one-hole braid connector, so each end lands on a single bolt or stud. A one-hole termination can rotate around that bolt, which is fine for bonding a hinged panel or a moving assembly but means you should not rely on it to hold an orientation. If the spec calls for a non-rotating, two-bolt pad connection, a one-hole braid is the wrong choice.

Cable length is listed as 30 in. When you lay it out, remember a bonding jumper needs slack to do its job: if the two bonding points are 30 inches apart, the braid will be pulled straight and will fatigue at the terminals. Size the run so the braid sits with a relaxed loop through the full range of movement.

The FBB30-1 is sold as the braid itself, one each per order. Bolts, nuts, washers, and any lugs or bonding pads on the equipment side are separate, so pick up the fasteners sized to the equipment's existing bonding holes when you order.

Country of origin is the United States, which is the answer most federal, state, and institutional procurement packages need before the part can go on a submittal.

Not where there is repeated motion. A stranded cable jumper is fine for a static bond between two fixed points, but across an expansion joint, a hinged door, or vibrating equipment the repeated flexing fatigues it. The FBB30-1 is a flat flexible braid built for that duty, and it comes as a listed assembly under UL E3060 and CSA LR29625 rather than something cut and lugged in the field.

Order it as Blackburn FBB30-1. That is the manufacturer part number for the 24 KCMIL, 30 inch, one-hole flexible braid, and it is the number to put on a purchase order or cross-reference against a spec sheet.