Instrumentation Cable in Free Air

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Designer69

Senior Member
Industrial plant... they want to install instrumentation cable (for vibration sensors, temp. sensors) from the equipment (motors/pumps) to the local controller in free air by installing some unistrut along the routing path and securing the cable with cable ties to the unistrut. It will be armored cable btw.

I am not sure how I feel about this. Reason they don't want conduit is in case they need to replace these cables (many thousands) they don't want to have to pull thru conduit each time.

Any thoughts if this is an allowable design or any issues with it?

Thank You
 
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ElectricMatt

Senior Member
Location
Waco, tx
We have a glass plant here that puts small amounts of cable IN strut as a strut wire way( they even make a cap for the strut).

I personally agree with the wirebasket or cable tray instead of strut.

I, however, would not zip tie to the bottom of strut as it would be a royal pain in the a*@ to cut all those zip ties to re-pull one cable.


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