100 Ft Cat7 Cable: S/FTP at 30 Metres
Quick answer / TL;DR: Short answer: a 100 ft Cat7 cord is S/FTP and will carry 10G comfortably at 30 m, but RJ45 terminations mean the channel cannot claim full Class F. For 10G, Cat6a is certified with RJ45 and costs less. Buy Cat7 where the environment is electrically noisy and the screening is the point, not where the class label is the goal.
A 100 ft Cat7 cable is about 30 metres of S/FTP: enough to cross a room or connect two cabinets, and short enough that the band is never the limit. What limits it is the connector – most 100 ft Cat7 cords are terminated in RJ45, which is not the interface Class F specifies.
This is the 100 ft Cat7 guide: what the construction delivers at this length, the connector reality, and the comparison that matters with Cat6a.
What the Construction Delivers
| The element | Cat7 S/FTP | The effect |
|---|---|---|
| Screen | Foil per pair plus braid | Best immunity |
| Band | 600 MHz | Headroom not needed at 30 m |
| Diameter | Large | Harder to route |
| Connector | GG45/TERA in the standard | RJ45 in most products |
At 30 metres the band is irrelevant for 10G; the screening and the connector are what distinguish one cord from another.
The Connector Reality
- RJ45 caps the channel below Class F
- The cable still performs well – the label is the casualty
- Bonding matters more than the class claim
- Shielded plugs and jacks are needed for the screen to work
A shielded cord on an unshielded panel is the most common way to waste the premium.
Cat7 Against Cat6a at 100 Ft
| The dimension | Cat7 | Cat6a |
|---|---|---|
| 10G at 30 m | Works | Certified |
| Immunity | Better | Good enough |
| Handling | Stiffer | Easier |
| Price | Higher | Lower |
The comparison is decided by the environment: noisy sites favour Cat7, ordinary ones favour Cat6a.
Standards and Verification
| The reference | The relevance |
|---|---|
| ISO/IEC 11801-1 | Class F |
| IEC 60603-7-7 | GG45 interface |
| TIA-568.2-D | Cat6a as the RJ45 ceiling |
| Field test | Channel test at the connector's class |
Per-SKU connector types are not provided in the knowledge base. The class definitions are standard; check what the plugs are before accepting the claim.
Real-World Applications
The machine shop office
A 28 m run past welding equipment: Cat7 S/FTP with shielded plugs, the panel bonded – the link stable where an unshielded run had dropped packets daily.
The certified gap
A project needing Class F certification over 30 m: RJ45-terminated Cat7 could not provide it. GG45 components specified – the class documented end to end.
The stiff-cable route
Cat7 routed around a tight corner: the jacket creased and one pair foil damaged. Re-routed with a larger radius – the handling cost the cable had warned about.
Related reading: The connector that limits the class — blogs/news/cat7-connector-problem
Related reading: The 50 ft Cat7 comparison — blogs/news/cat7-50ft-cable
Frequently Asked Questions
Is 100 ft Cat7 good for 10G?
Yes in practice at 30 m, though the RJ45 termination limits the formal class.
Cat7 or Cat6a for 30 m?
Cat6a is certified with RJ45 and cheaper; Cat7 wins only on immunity.
Does Cat7 need shielded panels?
Yes – otherwise the screen has nowhere to go.
Is Cat7 harder to install?
Yes: larger diameter and a bigger bend radius.
Sourcing cables for a project, a store, or a private-label line? Contact our B2B sales team for specifications, certification evidence, and volume terms – FOB and CIF options available. Request a quote or sample.