It's a good idea to place 220v AC single phase wire and 36v DC wire inside same conduit ?

GetDeviceInfo

Joined Jun 7, 2009
1,875
Code might say something like, within a conduit, the voltage rating is equal to the lowest rated insulation. Meaning your 220v as now only rated to the 36v. Is that Ok? Where are you located?
 

MrSoftware

Joined Oct 29, 2013
2,015
Is it a good idea? Without knowing anything about your project, I would say no. If for no other reason than should someone come along behind you and need to debug something, you want it to be clear what voltage they're going to be encountering. If they go in expecting to be touching 36V DC and instead grab on to a 220V AC wire, someone might get hurt.
 

MaxHeadRoom

Joined Jul 18, 2013
23,596
The lower voltage conductor is required to have the same insulation rating.

NFPA79: Wire insulation shall be identified and adequate for the voltage on that conductor.
Where the conductors are ran with or adjacent to other conductors, all conductors shall have the insulation rating for the maximum voltage involved.

l
 

Thread Starter

meowsoft

Joined Feb 27, 2021
438
The lower voltage conductor is required to have the same insulation rating.

NFPA79: Wire insulation shall be identified and adequate for the voltage on that conductor.
Where the conductors are ran with or adjacent to other conductors, all conductors shall have the insulation rating for the maximum voltage involved.

l
Yes... 36v DC is rated at 700v AC, same with 220v AC wire, it is safe ?, this isn't described in my local code
 

MaxHeadRoom

Joined Jul 18, 2013
23,596
To prevent the influence of EMI low voltage and conductors carrying AC should preferebly be twisted variety
Ground conductors can be untwisted, if need be.
 
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