I Just spent another 5 weeks programming this Table that follows most of the NEC Code rules. This is the third time in 13 years. This one is a Click Once Visual Basic application that runs only in Windows XP or Vista that has been updated so the .NET 3.5 sp1 has been added. This is an interpreter that reads the VB Intermediate Language. Anyway it is free with no gimmicks or ad ware. The package also includes a raceway fill and voltage drop application. Oh yes, the T310.16 application does the new 2008 NEC rule for the neutral where the continuous load does not have to be multiplied by 1.25 anymore and includes the new 2008 rules for derating for rooftop installations. at:
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