BS EN 60953-2:1996, IEC 60953-2:1990

Electric - A general term for the flow of electric charge

Heat - A term used to define thermal energy

water - A chemical substance. Chemical formula H2O.

Steam - Steam - water in gas form, water vapour. Commonly seen coming from a kettle

Size - is the measurement of how big an object is in space.

Wide - Something with a large width.

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