Nema Standard Symbols

Ansi z535 4 2011 r2017 american national standard for product safety signs and labels.

Nema standard symbols. We believe that standards play a key part in the design production and distribution of products destined for both national and international commerce. Electrical manufacturers are no exception. Standards that power and connect the electroindustry nema publishes more than 700 electrical and medical imaging standards and technical whitepapers that cover millions of member products. Where more than one symbol is shown the first one shown is to be preferred.

1 1 symbols included this standard is limited to north american symbols for electrical wiring and equipment. The wiring diagram symbols for any device will consist of the basic nema standard symbols arranged to represent the particular device and will vary with the manufacturer. Thus the iec international electrotechnical commission was established in 1906 originally tasked with defining international symbols electrical component standards nomenclature and overall ratings of electrical machinery and apparatus. Symbols for equipment and systems not covered by the nec are not included in this standard.

Since the electrical standards adopted by various nations may vary the markings and symbols used.