NEMA, the National Electrical Manufacturers Association, Rosslyn, Va., recently released ICS 19-2002, Industrial Controls and Systems: Diagrams, Device Designations, and Symbols.

IN practice, an electrician sometimes merely requires a circuit diagram of the apparatus or equipment with which he is working. He must therefore use symbols to denote electric bells, dynamos, etc ...

When constructing a circuit diagram, symbols are used to represent the different components, this makes it easier and quicker to draw rather than drawing detailed components.

Find out how to draw circuit diagrams and learn some electrical symbols with this KS2 Science guide.