Electrician Family, Dad Rages when his Son’s don’t know what THHN Wire is, Wire Quiz, Thoughts?

So, what's THHN insulation? What is the outer coating? Are you kidding me? You don't know what the outer coating on THHN wire? The out The very outer coating. Thermoplastic. Teflon. Oh, I don't know that's a hard one. Yeah, you know how we ever pull when you pull in a bundle with a bunch of hard pulls, sometimes you see that outer jacket get all ripped up and it looks like the insulation's ruined. Then you get a closer look and it's just that outer That's the Teflon coating. That's only there to help you pull. There's a company, I think it's Southwire that use simple pull. That's just it. It's not on the Romex. I noticed that right away. Exactly. And that because of that insulation is why Romex is rated at 60°C Mhm. and THHN is rated for 90°C. That's right. That's the only reason that >> What's the What's the next wire? Hey, listen up. What is the next wire that's almost exactly equivalent to THHN that you could use for a service? THWN. Hey, excellent. And what's the difference between THHN and THWN? Uh one is for outdoor and one's for indoor. One has got W for weather resistance. That's great, man.