We are attempting to understand conduit fill as it relates to bundled or wrapped wire (THHN). If a group of THHN (5-14 AWG & 5-18 AWG) are wrapped (to keep the group organized) vs individual THHN (5-14 AWG & 5-18 AWG). Would the wrap make a difference in the size fill calculation?
I would say no. It is not a conductor.
I don't believe the NEC address it.
I have to admit I was thinking about it for a minute.
Then I was thinking what if I pulled two groups of wrapped conductors and how I would address the fill. Not for NEC fill rather pulling. It would be like two larger conductors and a ID/OD and a possible jam ratio.
I may need to run some number to see if it's applicable.
Using a number of wires into two bundles. Versus number of wires. Based on raceway size.
I would not think one would be doing two or more bundles per pull however they may.