Communication cables for CL1/Div1 hazardous locations

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batese

Member
Location
Pennsylvania
Occupation
Product Manager
Hello,

I am new to this forum, so please don't beat me up too much for asking silly questions.

Ok, we have a client that is installing flexible cables (SOOW #12 AWG) in a hazardous location (Class1/Division1) with Hawke 753 cable glands at either end of the cable. They chose to use this type of cable instead of metallic conduit with seals, because they are worried about water ingress in hard conduit, as this area is prone to flooding.
link for wire - https://www.prioritywire.com/pages/copper_portable_soow12.php
link for gland - https://hubbellcdn.com/specsheet/HHI-HKE-Mult-753-NEC-COMPLIANT-GLAND-SPEC-UK-2023 V13.pdf

The problem that we seem to be having is that one of the cables for this application needs to be designed for CANbus communication, and I cannot seem to find any Cl1/Div1 CANbus cables.

I found what appears to be Ethernet cables for Cl1/Div1, but the impedance is not the same for these Ethernet conductors when compared to the 120 Ohm CANbus requirement, so I think that I will have to keep looking.

Does anyone have any experience with this type of application, and perhaps know of a manufacturer of Cl1/Div1 CANbus cables, or am I looking at this application from a wrong angle?

Any suggestions would be much appreciated.

Thanks
Eric
 
batese said:
Hello,

I am new to this forum, so please don't beat me up too much for asking silly questions.

Ok, we have a client that is installing flexible cables (SOOW #12 AWG) in a hazardous location (Class1/Division1) with Hawke 753 cable glands at either end of the cable. They chose to use this type of cable instead of metallic conduit with seals, because they are worried about water ingress in hard conduit, as this area is prone to flooding.
link for wire - https://www.prioritywire.com/pages/copper_portable_soow12.php
link for gland - https://hubbellcdn.com/specsheet/HHI-HKE-Mult-753-NEC-COMPLIANT-GLAND-SPEC-UK-2023 V13.pdf
Click to expand...

Is this an application where cord is allowed?
batese said:
The problem that we seem to be having is that one of the cables for this application needs to be designed for CANbus communication, and I cannot seem to find any Cl1/Div1 CANbus cables.
Click to expand...
I would not be worried about the cable. I think you can get intrinsically safe barriers for can bus.
Devicenet is canbus. You might have better luck looking for devicenet cables.

batese said:
I found what appears to be Ethernet cables for Cl1/Div1, but the impedance is not the same for these Ethernet conductors when compared to the 120 Ohm CANbus requirement, so I think that I will have to keep looking.

Does anyone have any experience with this type of application, and perhaps know of a manufacturer of Cl1/Div1 CANbus cables, or am I looking at this application from a wrong angle?

Any suggestions would be much appreciated.

Thanks
Eric
Click to expand...
 
I was finally able to find a cable mfr that does make Cl1/Div2 CANbus cables. Hopefully this option works with my customer (considering its not CL1/Div1). If not, its back to the drawing board.
 
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