Foreign Systems in Cable Tray

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augie47

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Tennessee
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State Electrical Inspector (Retired)
I have a cable tray with two barriers. One section has power, one data, and the third process piping for fluids. In reviewing Art 392 I don;t find where this is prohibited. Is this a Code violation ?
 
I think an argument can be made on this one.

For practical purposes, the barriers create 3 separate raceways. If there are no conductors mixed in with the process piping, it might fly.

Its not real uncommon to route air control lines this way.

However, I think there is also a requirement that raceways not be used to support other equipment that is harder to get past.
 
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