7-8kgs are OK, but it does depend on drum size. If a 7kg washing machine's drum is smaller than a 5kg's drum, then that's silly. Of course some people are big families and do require large loads, hence there are needs for a larger washing machine.
Subject-matter jurisdiction. Subject-matter jurisdiction is the authority of a court to hear cases of a particular type or cases relating to a specific subject matter. For instance, bankruptcy court only has the authority to hear bankruptcy cases.
For example, Congress limited the subject-matter jurisdiction of the United States Tax Court to cases related to taxation; thus, that court does not have subject-matter jurisdiction over any other matter. Most state courts are courts of general jurisdiction, whereas federal courts have limited jurisdiction. That is, state courts are presumed to have power to hear virtually any claim arising under federal or state law, except those falling under the exclusive jurisdiction of the federal courts.