Electrical Installation Guide According to IEC International : (methodology, installed power loads characteristics, power loading of and installation, connection to the MV utility distribution network, supply of power at medium voltage, connection to the LV utility distribution network, MV & LV architecture selection guide, LV distribution, protection against electric shocks, sizing and protection of conductors, LV switchgear function & selection, protection against voltage surges in LV, energy efficiency in electrical distribution, power factor correction and harmonic filtering, harmonic management, characteristics of particular sources and loads) .