On the back page of Dec's issue of EC&M is an ad for this product, stating that it has the capacity for "28 12-gauge power cables". It's a raceway for workstations, made of "LIGHTWEIGHT, easy-to-handle, scratch-concealing plastic". Barriers separate the V/D/V wiring from the power. Let's see, now. Derated to 45% for the number of conductors.........What do you think?? I speld bad so itz eddditd
[This message has been edited by electure (edited 01-16-2002).]
The point I saw was that even a 90° #12 conductor would be good for only 13.5 amps, and there isn't a way to limit the current to that. (I can see plenty of IT and plant maintenance types thinking of stuffing 7-4 wire circuits through this stuff and putting them on 20 amp breakers)....as the ad might lead them to believe
I thought in 4 wire circuits, only 2 were current carrying. That would mean 7-4 wire circuits would have 14 current carrying conductors and be derated by 50%. That means a #12 THHN should be able to handle 15 amps. I would think using fewer #10 THHN circuits at 20 amps would be more appropriate.
I need to apologize for not explaining the product properly. It's like a plugmold. Here: www.panduitncg.com/whatsnew/TG_news_release.asp The ad shows 15 #12 THHN in the top section. "cables" was in a quote from them. By 4 wire circuits, I meant 3Ø, 3 hots, one neut 120 v circuits (probably nonlinear to boot) All conductors are current carrying conductors. What kind of 4 wire circuit has only 2 current carrying conductors??