Around the globe, a universal electric code is recognized and practice by the manufacturer, designer and electricians. IEC or International Electric Code is this internationally recognized electric code. It is also called as NFPA-70.
Most of the country around the world has its own electric codes and rules like as Bangladesh has BNBC- Bangladesh National Building code(Where electrical code is covered in two chapter). But the most followed and practiced code is NFPA-70 Electric code.
The electrical code and standards is divided in to several parts. NFPA-70 does not cover the marine and high voltage electrical installation.