The Day I Ordered the Right Brand and the Wrong Cable
It was a Tuesday afternoon in March 2024 when I stood in a slightly too warm IT closet, staring at a cardboard box that said General Cable Highland Heights KY. On any other day, that would have made me feel good. General Cable is a brand I trust. But on that day, the box contained the exact thing I told the installer it would not contain. I had ordered the right brand. I had ordered the wrong cable.
I've handled low-voltage cabling purchases for a mid-sized company for about seven years now. I've made enough dumb mistakes that I keep a running checklist. This one cost roughly $1,150 in wasted material and overnight freight, plus a four-day delay on a phone system project. And it was completely preventable.
Let me back up.
A Clear Phone Starts With the Network, Not the Handset
The project team wanted to move our office from traditional phone lines to VoIP. The owner kept saying two things: he wanted a clear phone call, and he had no idea what devices were on the office Wi-Fi. He actually looked at me and asked, 'What is on my wifi?' I didn't know. Nobody really did.
So the consultant ran a network scan. The answer: 67 connected devices. Phones, laptops, a printer that had been 'temporarily' on Wi-Fi for 16 months, a smart TV in the break room, door access controllers, a thermostat system, and a bunch of things that showed up as unknown. That's not a network. That's a yard sale.
We could have put the new phones on Wi-Fi, but the consultant convinced us to run dedicated Cat6 drops. VoIP quality suffers when packets wait in line. If you want a clear phone call all day, you need a path for the signal that doesn't fight with a smart TV. I agreed. Wiring was the right call.
Then I placed the order.
Where the Mistake Started
The spec sheet said Cat6, plenum rated, CMP. I read that. Then I went to my preferred distributor website and looked for General Cable Cat6. The price was okay. The delivery was okay. The box said General Cable Highland Heights KY. I added it to the cart.
I didn't notice the jacket rating in the SKU. The SKU ended in R, not P. That letter is not decoration. Under the National Electrical Code rules that most jurisdictions use, CMP plenum cable is required in environmental air spaces. CMR riser cable is fine inside walls and vertical shafts, but not in the open ceiling plenum where the HVAC system pulls air. The code around fire and smoke is not a suggestion.
Here's the part I really can't defend: the first box that arrived even said CMR on the jacket, every two feet, in bright red letters. The installer pointed to it. I said, 'It's General Cable, it's fine.' It was not fine.
The next morning, the city inspector gave us the same answer with less patience.
The Prysmian Group General Cable Wrinkle
A second thing also tripped me up. When I ordered, I saw a note on the distributor invoice: Prysmian Group General Cable. For a second, I thought they were sending me a different brand than the General Cable from Highland Heights KY that I knew. I nearly called to complain. The brand was the same thing, obviously. General Cable became part of Prysmian Group in 2018. The Highland Heights KY site still handles a lot of the engineering and documentation. The product lines are still branded General Cable. The acquisition wasn't the problem. My ignorance of the product specs was the problem.
But this matters to anyone buying cable: you need to know exactly which General Cable product you're looking at. The brand is a starting point, not a full specification. Searching 'General Cable cat6' gives you a list. Searching 'General Cable cat6 1000 ft CMP' gives you the list you can actually use.
The Cost of 'It's Fine'
Now for the numbers. The CMR cable was not cheap, but it was also not what we needed. Reordering the correct plenum cable cost:
- Correct CMP cable, six boxes: $942
- Overnight freight because we were already behind: $186
- Return shipping on the unused CMR: $54
- Inspector re-travel time: $120
- Installer downtime for two days: not free, but hard to itemize
Total out-of-pocket waste: about $1,300. Plus the delay. Plus the feeling you get when the inspector says 'so who ordered the riser?' in front of your manager.
I saved nothing by skipping the spec review. The 'budget choice' was never a budget choice. It was just the wrong choice.
What I Actually Learned
First, most buyers focus on Cat6 vs Cat6a and completely miss the jacket rating on the label. But the jacket rating is what keeps you out of trouble with the building code. Cat6 vs Cat6a tells you system performance. CMP vs CMR tells you where the cable can physically go. Both matter. You need both on the purchase order.
Second, ask 'what is on my wifi?' before you promise anything about phone call clarity. We answered that question before we ordered, and it was the only reason we did the right thing with wired drops. If we had skipped that step, we would have had clear phone problems that no cable could fix.
Third, when someone asks for plenum, riser, CMR, or CMP, don't let your brain hear 'Ethernet cable.' Write the exact code from the spec sheet into the PO. If it doesn't fit in the notes field, put it in the SKU.
I have mixed feelings about the whole ordeal. On one hand, the General Cable product I ordered was fine. It was built well, and the jacket printed clearly. On the other hand, that clear printing is exactly what exposed my mistake. The product did its job. I didn't.
Now I keep a paper checklist taped to my desk. The first line says 'CMP? CMR? Which one is on the spec?' The last line says 'what is on my wifi?' I shouldn't need that reminder anymore. But I do.
If you're planning a phone system upgrade, learn from my 'it's fine' moment. An informed customer asks better questions. If I had spent ten minutes reading the spec instead of trusting the brand name, I would have saved four days and a lot of embarrassment.
