My company is currently in the process of implementing a new wire numbering standard, where there isn't one currently. I like the popular method of using the electrical drawing's sheet # and row # to derive the wire numbers. The problem I am facing is how can this method work if you wish to have a different electrical drawing for each control panel in the system. In this case, what can you call a wire the goes between 2 panels, therefor 2 drawings?? Each drawing will show the one wire in a different sheet # / row #.