I'm not sure what JC means either.
For general BB'ing, anywhere from 2 to 6 sets a muscle group. Larger area's like legs or back do not need any more work than any other body part. If you can't get a outstanding muscle building workout, along with a great pump, with-in 6 sets (or less) a muscle group than it's time to replan your whole outlook on training. Time of a workout can be between 30 to 45 minutes. Runnerbabe comes nearest the truth. Intense training in the shortest period of time for pure BB'ing. The old Time under Tension (TUT) method. 60 seconds between set's. 120 seconds between exercises when working a muscle group. And if anyone works well past a great pump(4-6 sets) than their just wasting their time.
Exceptions to the 6 set muscle group max, of course. I cycle GVT (10X10's) for 6-8 week cycles from time to time. I also do heavy power and partial push/pulls on a power rack for 6-8 weeks. Where the set's may be between 1 to 4 a muscle group. Not for everyone, of course. Good Luck.