I have a question regarding figuring a service load calculation for a new residence with a detached garage to be used as a work shop. I have the residence calculation figured but don't know what values to use for the garage. Owner tells me that he will be operating "several 230 volt motors" on various types of wood working equipment. Saw, planer, drill press,etc. I know that most times only a single (possibly 2) motors will be operating at the same time. Would seem foolish to figure full amp load on every possible piece in the garage, even tells me that a welder and compressor will be out there. Any thoughts on how to size the unknown? Thanks.