Old AJs electrical calculator software saves you time and money! Let the software perform your NEC search for tables and articles, apply them and do all the math. Old AJs is created by electricians...for electricians...with emphasis on simplicity and day-to-day usefulness for electrical contractors, masters and journeymen/apprentices. Check out our free trial version!
Old AJs sizes your feeders & services, complete with wire and conduit sizes for single and, if applicable, parallel runs. Size conduit for multiple wire size and insulation. Ohms law and AC calculations of all kinds are available.
Old AJs Electrical Software: http://www.oldajs.com/ssl/dls/trial1.3dl.msi
Design Master Electrical: http://files.designmaster.biz/DMElec7.exe
Design Master Electrical is an integrated electrical building design calculation and drafting program that runs on top of AutoCAD.
Drafting features include light fixture layouts, one line riser diagrams, panel schedules, fully customizable graphics, circuit looping, automatic tick marks, and switching.
Calculation features include circuit load totals, breaker sizing, feeder sizing, fault current calculations, voltage drop, and photometrics.