Why The PEC Needs to Adapt IEC
The first edition of the PEC published in 1962 by PAMEE was an adaptation of the NEC customized to suit the local Philippine environment. Several decades later and the PEC …
Transformer K-factor Rating and Variable Speed Drives
In this article, I have discussed the difference between a conventional transformer and a K-factor rated transformer. In modern-day plants, Variable Speed Drives (VSD) are widely used. The project I …
Time-Current Curves Using Excel
This tutorial serves a guide for the creation of time-current curves using Excel 2013. The user is expected to have at least an intermediate level of knowledge in the usage …
Resistance of Earth Electrodes in Parallel
In previous articles Single Earth Electrode and Earthing Resistance Calculation, I have presented methods of calculating the earth resistance using IEEE or IEC methods. AS 1768 Appendix C recommends that …
Philippine Electrical Code 2017 – Interpretation
In Philippine Electrical Code Part 1, 2017 Edition, the interpretation of the Code is given more comprehensive scope for the possible interpretation of the Code. Philippine Electrical Code Part 1, …
Grounding and Bonding Permitted Methods
Grounding is one of the most taken for granted provision of the Philippine Electrical Code. The incompetence of Electrical Inspectors make this practice worst. I inspected the grounding system of …