Water heating by a domestic water heater. Two conflicting safety issues affect water heater temperature—the risk of scalding from excessively hot water greater than , and the risk of incubating bacteria colonies, particularly "Legionella", in water that is not hot enough to kill them. Both risks are potentially life-threatening and are balanced by setting the water heater's thermostat to . The European Guidelines for Control and Prevention of Travel Associated Legionnaires’ Disease recommend that hot water should be stored at and distributed so that a temperature of at least and preferably is achieved within one minute at points of use. If there
Official Table of Drops Official Table of Drops The Official Table of Drops, issued by the British Home Office, is a manual which is used to calculate the appropriate length of rope for long drop hangings. Following a series of failed hangings, including those of John 'Babbacombe' Lee, a committee chaired by Henry Bruce, 1st Baron Aberdare was formed in 1886 to discover and report on the most effective manner of hanging. The committee's report was printed in 1888 and recommended a drop energy of . In April 1892, the Home Office issued a Table of Drops based on an energy of ; in