Over 1200 amps and over 6 feet wide. Thanks :)
R raberding Senior Member Location Dayton, OH Occupation Consulting Engineer Aug 7, 2012 #2 110.33 110.33 i think so, per 110.33(A)(3). This is for over 600v apps.
R raberding Senior Member Location Dayton, OH Occupation Consulting Engineer Aug 7, 2012 #4 yep - same rules 110.26(C)(3)