According to Table 400.5(A)(2), 5 wire 2/0 type W cable has an ampacity of 237 at 90 degrees (three current carrying conductors). According to the manufacturer's spec the ampacity is 189 ( http://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet200 ). They are applying the 80% adjustment according to Table 400.5(A)(3), so they are considering four conductors to be current carrying. I am looking at the 75 degree column, subheading F, and seeing 208 amps.
I'm fabricating a power cord for a 65kw portable generator with a 200 amp output breaker ( 3 phase, 120/208). I've asked for 2/0, the manufacturer says I need 3/0. I disagree.
Is the neutral to be considered current carrying in this application?
I'm fabricating a power cord for a 65kw portable generator with a 200 amp output breaker ( 3 phase, 120/208). I've asked for 2/0, the manufacturer says I need 3/0. I disagree.
Is the neutral to be considered current carrying in this application?