thanks scott,, ive been going over the examples in the NEC
(anex D) and its starting to make since to me now,, like i said this is something ive never had to do so its all new to me,, as a journyman i should know this stuff tho...lol...
im gonna throw another one out there for ya,,
one range at 12,000Va ,, one wall oven at8,000Va,, and one wall oven at 9,000Va ,, this is a 120/240 residential home
what size service would be needed to run this home ??? and also what size neutral would be needed for the service per calculation ????

on a side note what the hell is up with artical 220 ?? in annex D it says to refer to artical 220.6 for the demand factor for ranges,in my 2008 NEC code book there is no artical 220.6 in fact if you look thru the whole artical there seems to be alot of it missing