J Hooks VS Bridle Rings
Last Updated: 01/31/2017
Cable J-Hook (*Images represent Erico Caddy products.)
Cable Bridle Ring (*Images represent Erico Caddy products.)
J-Hook: cable support fixture, usually metallic, designed in a “J” shape to hold and suspend cable bundles or innerduct on ceilings, walls, beams, purlins, in raised floors. A removable/reusable clip is typically included to close off the “J” and prevent cables from jumping off the hook during installation or MACs. (Some manufacturers allow for cable ties or hook and loop fasteners instead of clips.) The hook’s wide base and beveled edges prevent damage to cables during installation and provide appropriate bend radius to prevent performance degradation.
Bridle Ring: cable support fixture, usually metallic, designed in a ring shape to hold and suspend cable bundles on ceilings, walls, beams, purlins, in raised floors. The top of the ring will be open to allow insertion of cables without the need to thread them through the ring.
Both options offer a suspension option that typically will require less time and material and have a lower cost than cable trays.
J-Hooks provide a non-continuous pathway for innerduct and communication and low voltage cables including Category 5E, 6, 6A, 7, coaxial and fiber optic.
Bridle rings provide a non-continuous pathway for communication and low voltage cables and are not recommended for high performance cables (Category 5 and above and fiber optic).
BICSI recommends initial fill rates to be 40% when designing pathways. This partial fill will allow for expansion, moves and changes of your cable infrastructure in the future. Most networks never get smaller, but they will get bigger. You cannot pull new cable in a pathway that is full, and it can be very difficult to run new hooks in a finished building with all the other infrastructure components in the way (HVAC, other cables, lighting, etc.).
The intervals between hangers should not exceed five feet.
Cable sag between hangers should not be more than 12 inches at midspan.
Power and data cables should not be installed in same hanger.
To avoid damage to cable during installation the Maximum Pulling Tension should not be exceeded. This will vary by cable type. For 4 Pair 24-23 AWG UTP this should not exceed 25 pounds force (25 lbf or 110 Newtons).
Related Industry Terms/Acronyms:
J-Hook Cable Capacity
* Capacities are averages for steel hooks and will vary by manufacturer and cable OD. Based on 70% fill rate.
Caddy CAT HP J-Hooks
Frequently Asked Questions:
How far should hooks/rings be spaced apart?
Why are bridle rings not recommended for high performance cables?