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
Bear spread share (i.e. a loss of $5 per share). The loss is due to speculation that the price would go down but it actually did not. A bear put spread is a limited profit, limited risk options trading strategy that can be used when the options trader is moderately bearish on the underlying security. It is entered by: The options trader hopes that the price of the underlying drops, maximizing his profit when the underlying drops below the strike price of the written option, netting him the difference between the strike prices minus the cost of entering into the position. Bear