In metal work shops / manufacturing, flex cable doesn't hold up very well. Stepped on by work boots with metal chips in the soles, sheet metal scrap on the floors are like knives.
The statements on the nylon jacket was not clear. It sounded like if the nylon cover came off when pulling it that was ok. How can that be if when you enter a box you have to have the nylon cover enter the box a certain distance. This statement could have used some more clarification.
For the most common applications, it is OK if the nylon jacket comes off during the pull. The nylon will absorb the wear and tear, so the insulation beneath it remains intact. It also reduces the friction, from what it would be, if the PVC insulation were the only layer surrounding the conductor. In applications where you need protection from gasoline, oil and chemicals, that is where you need to be careful not to damage the nylon jacket.
That makes it sound like if you are going just a couple feet inside of a 2x4 wall you don’t actually need to use romex. You can just put in individual wires. White, black, and copper. Am I understanding this right or am I not understanding what the nylon jacket is.
@@ecospider5 It's a different kind of jacket, than the jacket that is on Romex. Individual conductors are typically required to be in a raceway or enclosure, unless otherwise permitted in the NEC. The nylon jacket on THWN-2 is very thin, and does not serve the same purpose as the jacket on a multiconductor cable.
![Branch Circuit, Multiwire, NEC 2020 - [210.4], (19min:38sec)](http://i.ytimg.com/vi/Qynp92rIlYg/mqdefault.jpg)
![Branch Circuit, Multiwire, NEC 2020 - [210.4], (19min:38sec)](/img/tr.png)
![Ampacity Table, NEC 2020 - [310.15], (13min:26sec)](http://i.ytimg.com/vi/MXdt6TfBetg/mqdefault.jpg)
![System Bonding Jumpers for Different Types of Systems, NEC 2020 - [250.30(A)(1)], (8min:34sec)](/img/n.gif)
Thanks so much Sir Mike Holt, be safe always, God bless
Thank you!
Thank you so much Sir great full video sharing for us. It is very helpful learning points NEC 2020
Awesome, Mike! Thank you!
My pleasure!
The next generation.
Mike, Hard and Extra Hard usage-Think construction sites also.
In metal work shops / manufacturing, flex cable doesn't hold up very well. Stepped on by work boots with metal chips in the soles, sheet metal scrap on the floors are like knives.
What is ampacity rating of #12 AWG Copper THWN-2 at 60 Degrees Celsius?
See Table 310.16 in the 2020 NEC or Table 310.15(B)(16) in the other Code books.
@@MikeHoltNEC I see the ampacity rating of #12 AWG Copper THWN-2 in 310.16 under 90 Degrees Celsius ONLY?
Watch - th-cam.com/video/OLIHEiiY_Rs/w-d-xo.html
Very informative
Glad you think so!
The statements on the nylon jacket was not clear. It sounded like if the nylon cover came off when pulling it that was ok. How can that be if when you enter a box you have to have the nylon cover enter the box a certain distance.
This statement could have used some more clarification.
The nylon jacket is 'not' insulation, so if it gets damage or comes off, that is fine.
For the most common applications, it is OK if the nylon jacket comes off during the pull. The nylon will absorb the wear and tear, so the insulation beneath it remains intact. It also reduces the friction, from what it would be, if the PVC insulation were the only layer surrounding the conductor.
In applications where you need protection from gasoline, oil and chemicals, that is where you need to be careful not to damage the nylon jacket.
That makes it sound like if you are going just a couple feet inside of a 2x4 wall you don’t actually need to use romex. You can just put in individual wires. White, black, and copper. Am I understanding this right or am I not understanding what the nylon jacket is.
@@ecospider5 It's a different kind of jacket, than the jacket that is on Romex. Individual conductors are typically required to be in a raceway or enclosure, unless otherwise permitted in the NEC. The nylon jacket on THWN-2 is very thin, and does not serve the same purpose as the jacket on a multiconductor cable.
@@ecospider5 you can't run wires without being installed in a raceway or cable, see NEC 300.3(A).
🤯🤯🤯🤯