Of all the support systems for structured cable, there is no “one-size-fits-all” solution. IT professionals and cable installers may have preferences, but the decision often comes down to a blend of benefits, features, and budget. That said, some cable supports have gained widespread usage to the point where they’re simply accepted as “the best” and the discussion is over for most people. When new solutions become available, the industry can have a difficult time embracing them, even if they offer clear gains in performance.
J-hooks are an example of an entrenched cable hanging solution that most people are content to use, never realizing that a better option exists. Here at Unipath, we intimately understand the reasons why J-hooks are so popular with IT professionals and low voltage cable installers. They fit a crucial niche. However, when we looked hard at real-world scenarios where J-hooks supposedly shine, we found a lot of room for improvement.
That’s also why we thought it was time to provide a fresh comparison of J-hooks with the Unipath solution.
The J-hook is a simple, low-tech, light-weight, non-continuous cable management solution. It can be great in tight spaces and areas that lack a fully engineered cable raceway or that can’t accommodate one.
A J-hook is formed in the shape of the letter “J” from a wide, flat piece of metal (2-inches is a common width). They often come with a retainer clip to keep cables from jumping off and the long upper part of the “J” can be mounted to a wide variety of surfaces, including steel beams, using specific adapters or simply screwed directly into the wall. It’s a proven way to run ethernet and fiber optic data cables without exceeding the bend radius limitations or otherwise damaging the cable.
The modular nature of J-hooks allow them to work in many different scenarios. You can buy them in large quantities, or just a handful at a time, depending on your needs. They come in different colors and finishes as well. They can be daisy-chained together to isolate different cable disciplines (e.g. security, fiber optics, telephone, internet, etc.). When it comes to running cable ad-hoc through a crawlspace or drop-ceiling J-hooks allow for quick, straightforward installation. You can mount as few or as many as you need in the space available, even using threaded rod or angle brackets, without rerouting existing utilities to accommodate bulky raceways.
So in summary, J-hooks allow for highly flexible routing, quick installation, and relatively low unit cost for ad-hoc cable support.
On the flip side, J-hooks fall short on a number of key issues. First is capacity: if you’re following the 40% fill recommendation, to allow for future moves, adds, and changes (MACs), you’ll be severely limited by the number of cables you can load onto any single J-hook. Next is installation: mounting a few J-hooks won’t wreck your labor budget, but they quickly become inefficient when you install more than a few dozen, especially if you need to daisy-chain multiple hooks together at each support point. This also leaves support fixtures that can be difficult to service due to the inelegance of multi-hook installations.
In summary, the modularity of J-hooks give the impression that you can use as many as you want with excellent results. In reality, the inefficiency of installation and service create future headaches that aren’t easily remedied after the fact.
The Unipath system takes the core features that make J-hooks attractive and packages them in a fixture that is quick to install, easy to service, and a cinch to integrate with existing raceways or cable support systems. By pre-manufacturing multiple support rings (based on number of disciplines you need to hold) into a single cross-bar Unipath greatly reduces install time and complexity. The cross-bar is used for cable support as well as the rings that are mounted below it. With a single installation point, you can accommodate up to 12 disciplines.
Unipath supports mount easily to existing raceways, but they can also be fixed to the wall, support beams or other features of the utility throughway, including HVAC plenums.
The shape and size of the Unipath rings also offers superior capacity over J-hooks, in addition to reducing cable abrasion and permitting easier MACs.
Unipath cable supports avoid crisscrossing, mis-matched supports, span hanger differences and non-perpendicular installations.
J-hooks are a well-established way to run open-air cable support, but in nearly every situation where J-hooks make sense, the Unipath system offers a simpler, higher-capacity, lower-cost solution.