August 2022
- 09: IEEE 399 – Recommended Practice for Industrial and Commercial Power Systems Analysis
- 08: Arc Flash – Hazard and System Grounding
- 07: Arc Flash – Incident Energy at Working Distance
- 07: Lightning Damage to Services
- 06: Power Factor Correction and Power System Energy Efficiency
- 04: Short-circuit apparent power of the system
- 03: Life Without Electricity
- 02: IEEE / IEC Oil-immersed Transformers – Methods of Cooling
- 01: IEC 60909 vs ANSI/IEEE 141 Short-Circuit Current Calculations
July 2022
- 31: Fault Sequence Network Connections
- 28: Motor Cable Selection Chart Explained
- 26: Modes of Operation – Variable Speed Drives
- 24: System Voltage Classes (ANSI)
- 21: Electrical Power System Studies
- 20: Protection Against Electric Shock – Indirect Contact
- 18: IEEE and IEC Interface
- 17: IEC 60038 – Voltage Standardization
- 13: Motor Protection -Direct Temperature Sensing
- 12: A Junction Box Is Required
- 09: Open Circuit Faults
- 06: Importance of Design Documentation
- 04: Common Mode Voltages: Causes, Effects and Mitigation
- 02: Cable Rating Reduction Factor due to Harmonic Currents
- 01: Harmonics and Neutral Currents
June 2022
- 30: What is the Allowable Harmonics In the Philippines?
- 29: Engineers Need Actual Site Experience to Do Effective Design
- 29: Greenfield and Brownfield Projects
- 28: Lightning Damage to Structures
- 26: Concept Selection or Detail Design
- 25: Differential Protection – Fast and Reliable
- 24: IEC 61439-1 Minimum Size for PE, PEN Conductors
- 23: Conductor Stranding – IEEE vs IEC Standards
- 22: GMD, GMR and Waterfall Charts
- 20: Three Elements of Good Engineering Design
- 19: Insulation Testing
- 18: International Standards as PEC Alternatives in Electrical Installation in the Philippines
- 16: Electrical Protective Devices and Their Applications
- 15: Low Voltage Fuses Applications
- 14: Insulation Coordination – Why is it required?
- 13: Compliance to Standards is not necessarily compliance to Legislations
- 12: PEC Requirements for Design Analysis Report
- 11: RA 7920 Regulating the Practice of Electrical Engineering in the Philippines
- 10: RA 7920 Provision on Signing of Technical Documents and Drawings
- 09: Effects of Temperature On Cables – Faulty Electrical Wiring
- 09: Calculating Utility Source Impedance
- 08: Circuit Breaker Time-Current Characteristic Curve Made Easy
- 07: Advantages of Per Unit and Percent Calculations
- 06: Symmetrical Components – The Beginning
- 04: Safety in Design
- 02: Why The PEC Needs to Adapt IEC
- 01: Once an Engineer, Always an Engineer
May 2022
- 28: PEC – Is Voltage Drop Calculation Required?
- 26: The Purpose of Maximum and Minimum Short-circuit Currents
- 25: Calculation of Maximum and Minimum Short-circuit Currents
- 24: Comparison of IEC and ANSI Terminology
- 21: Transformer K-factor Rating and Variable Speed Drives
- 19: Old School Method Rocks (Do not be an Idiot)
- 17: Transformer K-Factor Rating and Harmonics
- 14: 10 Reasons to Use Per unit
- 10: Circuit Breaker Ratings – A Primer for Protection Engineers
- 08: Determining the required sizes of earthing conductors and earth electrodes
- 07: Effects of Unbalance Voltage on Induction Motors
- 05: When the Basis of Design Fails to Serve its Purpose
- 03: Effects of Harmonics on Resistive Loads
- 02: Phase Shifting Transformers to Cancel Harmonics
- 01: Phase Sequence of Harmonics
April 2022
- 29: Harmonics and Power Quality
- 28: Introduction to Harmonics
- 27: Ground and Bonding – What is the Difference?
- 26: Time-Current Curves Using Excel
- 25: Effects of harmonics on Electrical Equipment
- 24: Three Phase Voltage Unbalance – Causes, Effects & Mitigation
- 23: IEC Equipment Voltages
- 17: Resistance of Earth Electrodes in Parallel
- 16: Resistance of a Single Earth Electrode
- 08: Isolation of Neutral Conductor in Hazardous Areas
- 03: Philippine Electrical Code – Working Spaces
March 2022
- 31: Philippine Electrical Code – Metal Underground Water Pipe as Grounding Electrode
- 30: Philippine Electrical Code – Equipment Grounding, Grounded and Neutral Conductors
- 21: Electrical Connections Temperature Limitations – Philippine Electrical Code
- 19: Republic Act No 11285 – Energy Efficiency and Conservation Act (Part 4)
- 17: Republic Act No 11285 – Energy Efficiency and Conservation Act (Part 3)
- 16: Republic Act No 11285 – Energy Efficiency and Conservation Act (Part 2)
- 13: Republic Act No 11285 – Energy Efficiency and Conservation Act (Part 1)
- 10: Advantages of High Resistance Grounding Over Ungrounded Systems
- 05: Philippine Electrical Code 2017 – Interpretation
February 2022
- 27: Low Voltage Motor Protection Coordination Using Excel
- 26: Electrical Permits – PEC 2017 Provision
March 2020
January 2020
October 2019
September 2019
November 2018
September 2018
May 2017
April 2017
December 2015
October 2015
December 2011
July 2011
June 2011
June 2010
January 2009
