underfloor raceways in industrial facility

[JimmyElectro]

visited a warehouse that has trenches built into the concrete floor with 1/2" steel cover plates as covers. A forklift managed to move a plate as it rolled over it and nailed a 480V conductor laying in the trench. Is this trench considered a raceway as other conduits run through here as well as other unprotected conductors feeding other equipment?

:?

 

[GoldDigger]

With the cover just laid in place rather than fastened, I would not call it a raceway. Certainly not a listed or approved raceway. More like a covered cable tray but not that either.
Probably not acceptable to put non- cable wire types there without a raceway.
Events prove it was not well protected against physical damage.

 

[ADub]

That's how our plant does things, we have trenches cut in the floor and then inset with steel. It is not a raceway. We use these trenches to get air, gas, power, welding grounds, and hydraulics from point A to point B. I wouldn't consider inside the trench susceptible to physical damage but we do it all in rigid regardless.


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