I dont think AD has Cat7 or 8
Would you mind disclosing your source for pre-made cables?
padees said:I didn't know you sold those.
What do most do out there in regards to ethernet cabling? Buy pre-made cable lengths for use in panels? Buy a spool and crimp your own? If you are going that route are you using shielded cabling and making cables with shielded ends on them?
Isn't it bad practice to have a shielded signal cable connected connected to ground on both ends?
How do you ground only one end of the shielded Ethernet cable?
Unless the device has some ground jumpers or something similar on each Ethernet port.
Here's a part of the equation that I forgot to put in the OP. What about 600V rated patch cables? Which one would need to be UL508a compliant when using it near a VFD no? Those seem harder to come by, aside from my local AB distro.
All my communications cables are run in a separate conduit and enter the VFD alone. They do not run with the VFD cables....so you do not have to have 600V rated Ethernet cables.
Isn't it bad practice to have a shielded signal cable connected connected to ground on both ends?
How do you ground only one end of the shielded Ethernet cable?
Unless the device has some ground jumpers or something similar on each Ethernet port.
Originally posted by kallileo:
Isn't it bad practice to have a shielded signal cable connected connected to ground on both ends?
I'm a bit surprised that some companies do not seem to have a site specification covering everything from building fabric to electrical installation.
Generally speaking that is correct. However, I have never run into this as an issue with shielded Ethernet cables. I'm not sure if it is because the machines I work on are geographically small enough (usually less than 100ft cable runs) that we don't have ground plane issues or if modern industrial Ethernet devices are designed to deal with this possibility. Whatever the reason it has never caused us an issue.
Keith
Isn't it bad practice to have a shielded signal cable connected connected to ground on both ends?
How do you ground only one end of the shielded Ethernet cable?
Unless the device has some ground jumpers or something similar on each Ethernet port.