Does NFPA 79 require the use of ANSI electrical symbols on drawings or can IEC symbols be used on machine panels shipped within the US? 17.7.1 references IEEE 315 for symbols but later on 79-80 the standard shows ANSI symbols and IEC symbols.
IEEE 315/315A is also ANSI Y32.2. To make the standard more globally accepted, many IEC symbols are included. That said, you can use either or both...neither are required.
I prefer non-IEC.
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