Phil Buchanan
Lifetime Supporting Member
The A-B Ethernet cable is indeed rated for 600V insulation AND is rated M3 I3 C3 E3 as far as ISOLATION and noise immunity, the highest rating available.
https://literature.rockwellautomation.com/idc/groups/literature/documents/td/1585-td001_-en-p.pdf
It’s also rated as PLTC (Power Limited Tray Cable) so it can be run in parallel with 480V cables anywhere. A-B uses it inside of their MCCs and doesn’t need a separate wireway like others. I’ve used it ever since I heard about it, I’ve never had issues (other than installer errors with regard to making up my own connectors...).
This is what I use also and never had any issues. If you wanted to put it in the wire duct and make it look neat (I do) then if using Panduit wire duct you can get the shielding separator which makes 1 piece of wire duct into 2 and the ethernet cable can go on one side and the 480 on the other where it needs to run parallel and it will provide additional shielding.
You should also be using VFD cable on the VFD's so that should mitigate most of the noise on those and will keep the noise from radiating outside the cable.