Cable Routing in Analog Vs Discrete Vs Comms

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D!NNy

Senior Member
Location
San Luis Obispo
Just for the clarity and clear confusion::

Question 1:
Can Analog 24VDC vs Discrete 24VDC vs Comm (Ethernet) be routed in the same conduit?
Question 2:
Can Analog 24VDC vs Discrete 120VAC be routed in the same conduit?
Question 3:
Can Discrete 120VAC vs Comm (Ethernet) be routed in the same conduit?
Question 4:
Can Analog 120VAC vs Comm (Ethernet) be routed in the same conduit?

Appreciate your help in advance.

Thanks
 

tom baker

First Chief Moderator & NEC Expert
Staff member
Location
Bremerton, Washington
Occupation
Master Electrician
This appears to be a PLC question. Some members here don't know what discreet and analog are.
When the cables can be routed in the same conduit depends on the classification of the PLC power supply, most are considered Art 725. Class 2, and those circuits must be kept separated from power lighting and branch circuits.
In my PLC cabinets, wired under UL 508, the "low voltage" and 120 volts are in the same duct. External to the cabinet separation is required, but I will often run PLC I/O with 120 in a gutter, never in a conduit
But I would never ever run PLC inputs and outputs with 277/480.

Question 1:
Can Analog 24VDC vs Discrete 24VDC vs Comm (Ethernet) be routed in the same conduit? Yes if the 24 VDC is a class 2 circuti
Question 2:
Can Analog 24VDC vs Discrete 120VAC be routed in the same conduit? Probably not. Depends on the class circuit
Question 3:
Can Discrete 120VAC vs Comm (Ethernet) be routed in the same conduit? Never ever
Question 4:
Can Analog 120VAC vs Comm (Ethernet) be routed in the same conduit? same question as above
 
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