Electrical Codes and Standards
The National Electrical Code® (NEC®) shall be used in conjunction with other codes and standards when designing and installing electrical systems if they are to be considered safe, dependable, and reliable. This course discusses such codes and standards and outlines how they are utilized wit...
2020 National Electrical Code Changes
Grayboy has consistently proven itself to be the most innovative and responsive training organization of codes and standards in the electrical industry. GBs online training dramatically improves the student’s visual perception and retention of the material. Thousands of individuals and nu...
2021 NFPA 70E Code Changes
As in the past, the changes that have been made to the newest edition of the NFPA 70E have been numerous and, as always, prompted a need for a publication that not only designates these changes in a well-designed format, but provides a detailed and visually accepted presentation for the easy compreh...
Motors
There are three currents that must be determined before designing and selecting the elements to make up circuits supplying power to motors. The first current that must be found is the full-load amps (FLA) from Table 430.248 for single-phase motors and Table 430.250 for three-phase moto...