I'd like to learn if there is any technical difference between "electrical (listed) glue" and "plumbing" PVC cement. Personally, I prefer the grey plumbing glue to the clear electrical glue, because I have more working time, and it matches the pipe color (better than the red/blue/whatever glues). Also, the plumbing glue is available in smaller containers- I don't often do enough PVC to warrant keeping a quart on the truck!
