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 ... Cost: $34 Buy full version       Trial version       Publisher: Softcalc Designs LLC     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.