The distribution code defines power quality as the quality of the voltage, including its frequency, and the resulting current, that are measured in the Distribution System during normal conditions. Since Power Quality issues affects every consumer in the Grid, the Code dictates standards that to be followed and measured at the point of common coupling. The increasing demand and applications of non-linear load in industries nowadays greatly affects the quality of the power system. Unfortunately, most of the older electrical designs of industries have no anticipation for these kinds of loads. Nuisance tripping and unplanned downtimes in industrial and commercial establishments greatly affect production and contribute a great economical loss. The stability of power system and mitigations of power quality problems now lies on the hands of Engineering Team and Maintenance personnel. This technical training will guide maintenance engineers and improve their technical know-how on how to deal with the power quality issues.