When I look at the exceptions in 412.3 (California Plumbing Code), I find numbers 2 & 3 somewhat confusing. I interpret number 3 to apply to offices, merchantiles and small businesses but I interpret number 2 to apply to restaurants, pubs and such. If they are either/or, then why are they not worded the same? I am not stuck in my interpretation, so would like to hear how others in California look at these exceptions. I have a small coffee shop/pub (with live entertainment) trying to use exception 3. Their occupant load is 54, but the total floor area is less than 1500.