A question was posed to me yesterday about de-rating conductors and conduit fill. The question was, three 240VAC circuits, and three 120VAC circuits (and grounds) in EMT. They calculated 9 current carrying conductors. I said twelve: six for the three 240VAC circuits, three for the 120VAC hots and three for the neutrals. The conduit fill I think we worked out (3/4" EMT, 16 permissible, 9 as a "magic" number). I was sure that this had been covered before but, when I tried to do a search for "current carrying conductors" (in quotes) it said the words were too common. Thanks, Pete