Running 460VAC, 3-phase together with 24VAC, 1-phase power?

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rustydud

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Hello everyone!

I have 460VAC, 3-phase power cables each run with 600V rated power cable.
I have 24VAC control power each run with 600V rated power cable. Each control power cable is a dry-contact (a high-level switch) run to a computer supplying 24VAC wetting voltage.

I would like to run the 460VAC & the 24VAC cables next to each other.

The cables will be run against a sheet-metal box and fastened with zip-ties to a listed support. So the cables will not be run in raceway or cable tray.

My question:
Is there any PRACTICAL reason or any NEC code-specific reason why I should NOT run this 460VAC, 3-phase power next to this 24VAC control power?​
 
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Any thoughts?
Can I provide any additional information?
Thanks.

rustydud said:
Hello everyone!

I have 460VAC, 3-phase power cables each run with 600V rated power cable.
I have 24VAC control power each run with 600V rated power cable. Each control power cable is a dry-contact (a high-level switch) run to a computer supplying 24VAC wetting voltage.

I would like to run the 460VAC & the 24VAC cables next to each other.

The cables will be run against a sheet-metal box and fastened with zip-ties to a listed support. So the cables will not be run in raceway or cable tray.

My question:
Is there any PRACTICAL reason or any NEC code-specific reason why I should NOT run this 460VAC, 3-phase power next to this 24VAC control power?​
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My first thoughts revolve around "The cables will be run against a sheet-metal box and fastened with zip-ties to a listed support". I have a problem seeing where that meets NEC under Art 400 or Art 336.
Beyond that I would take a look at Art 725.136 to make sure there is not a violation.
 
As long as one or the other is a listed cable (and you have both) there is no prohibition in the NEC for running them together. From a design standpoint, as something that may possibly cause operational problems I can't comment.

-Hal
 
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