Class 2 Div1 Tray Cable

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PapaGreg

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I have run across an installation at a wheat grain elevator where Tray cable TC has been used for the Watch Dog Monitoring System wiring method. I don't see where TC is identified for use in this location. The probe inputs operate on 24 VDC. Could this be acceptable?
 
Wanted to make sure

Wanted to make sure

Wanted to make sure" what I read was really what I thought I read". Thanks.
 
masterinbama said:
What if it's intrinsically safe wiring and equipment?
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If a system doesn’t meet all the requirements of Article 504 including ANSI/ISA RP 12.06.01, it isn’t intrinsically safe. I know ANSI/ISA RP 12.06.01 is only referenced in FPN/INs, but the equipment won’t be listed otherwise. [See 504.4]

To be blunt, there are so many auxiliary requirements in Article 504 and ANSI/ISA RP 12.06.01 that people usually know if a system is intrinsically safe.

I just answered the question asked, I could have speculated on much more than intrinsically safe systems.
 
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