Los técnicos de campo deben identificar rápidamente si el tablero que están interviniendo sigue normas IEC o NEMA para utilizar los repuestos correctos.
, resembling physical components (e.g., zig-zag for a resistor). European symbols (IEC) are more , using abstract rectangular "boxes". Standards Agencies : National Electrical Manufacturers Association ( ) and American National Standards Institute ( : International Electrotechnical Commission ( ) and the German Institute for Standardization ( Application simbologia electrica americana y europeapdf
