E.F.U.S. (Electrical Function Utility Suite) Cost: $34 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions E.F.U.S. (Electrical Function Utility Suite): E.F.U.S. (Electrical Function Utiltity Suite) is a collection of functions and calculators for electricians and electrical professionals. Included are all ohms law functions, conduit fill calculator, box fill calculator, voltage drop calculator, wire ampacity calculator, transformer calculations, motor horsepower and more.