Scope. This subcommittee will utilize symbols and identification per ANSI/ISA-5.1-2009, Instrumentation Symbols and Identification, in combination with other ISA standards, commonly used equipment ...

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 ...

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