Tips on Effective Design
As an Electrical Engineer working on a global scope, knowledge on International Electrical Standards such as the IEC and the IEEE is an advantage. This is just the start though, …
Insulation Coordination – Why is it required?
What is insulation coordination and what is its importance? There are many definitions of insulation coordination provided by different authorities. In this instance we wanted to use IEC 60071-1 definition …
IEC 60909 vs ANSI/IEEE 141 Short-Circuit Current Calculations
Short-circuit calculation is one of the most important work to be undertaken in plant power distribution. A comprehensive, detailed and accurate short-circuit currents will be used in switchgear selection, protection …
PEC – Is Voltage Drop Calculation Required?
There are provisions in the Philippine Electrical Code stating the maximum voltage drop for branch circuits and feeders. Philippine Electrical Code Part 1/Chapter 2. Wiring and Protection/Article 2.10 – Branch …
Updating of the Philippine Electrical Code 2009
A copy of the 2009 edition of the Philippine Electrical Code (PEC) is always on top of my desk just in case I need it as a reference. When not …
Protection of the Neutral Conductor
Overload detection shall be provided for the neutral conductor in a multi-phase circuit Where the cross-sectional area of the neutral conductor is less than that of the line conductors. The …