Multiconductor Cable(18awg/25 conductors, 24VDC)

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Kilowatt76

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Rock Hill, SC US
Hi,

I'm trying to figure out if multiconductor cable(18awg/25 conductors, 24VDC) is allowed in conduit? We have a customer that will be running conduit from a conveyor J-box to an electrical enclosure and I wasn't sure if you could pull multiconductor cable? I have always used single wires(THHN) in conduit, I'm just trying to save pulling a bunch of low voltage wires for sensors and solenoid valves. Is this allowed?

Thanks,
Kilowatt76
 
Kilowatt76 said:
Hi,

I'm trying to figure out if multiconductor cable(18awg/25 conductors, 24VDC) is allowed in conduit? We have a customer that will be running conduit from a conveyor J-box to an electrical enclosure and I wasn't sure if you could pull multiconductor cable? I have always used single wires(THHN) in conduit, I'm just trying to save pulling a bunch of low voltage wires for sensors and solenoid valves. Is this allowed?

Thanks,
Kilowatt76
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Yes, you can pul it in conduit. Just not in same conduit as AC. Still have to meet cables in conduit fill rules but have done it loads of time, even with Cat 5 cables
 
Adamjamma said:
... Still have to meet cables in conduit fill rules but have done it loads of time, even with Cat 5 cables
Click to expand...

Sure you can. Unless the circuits are Class 1 and the multi-conductor cable is tray cable (type TC) the only fill requirements are those recommended by the manufacturer of the cable you are using. The NEC doesn't specify conduit fill for communications (CAT5) or CL3 and CL2.

-Hal
 
Ok, just too used to fill requirements... Even though it is not for voltage reasons, my course here requires fill adjustments for Cat 5 or for RG6 etc in conduits... because conduit fill is not for voltage reasons but to be able to pull cable without it breaking or the act of pulling damaging other cables.

Derating is needed for mid voltage cables but Cat 5 does not usually suffer from derating, however it does suffer from cross talk on occasion , usually in those times that you dont figure it should.

but, if you figure it does not need a fill limit, go for it... However, fill is listed in some of the manufacturers catalogues that I have used...
 
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