petersonra Senior Member Location Northern illinois Occupation Semi-retired engineer Jan 26, 2005 #1 I got a project that specs the use of TWHN wire. Is there such a beast? I've heard of THWN, but not TWHN. maybe a typo. But its repeated at least a dozen times.
I got a project that specs the use of TWHN wire. Is there such a beast? I've heard of THWN, but not TWHN. maybe a typo. But its repeated at least a dozen times.
B bphgravity Senior Member Location Florida Jan 26, 2005 #2 Re: TWHN Wire I don't see that type in Section 310.13, so I would guess that it is indeed a typo.