scope:

This standard deals with the safety of fixed electric immersion heaters for household and similar purposes that are intended for installation in a water tank for heating water to a temperature below its boiling-point. The rated voltage is not more than 250 V for single-phase appliances and 480 V for other appliances. NOTE 101 The water tank may have alternative means for heating water, such as the circulation of hot water supplied from a separate boiler. Note 102 Immersion heaters having a rated power input up to 25 kW for incorporation as an alternative heating source in central heating boilers are also within the scope of this standard.