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 Circuits FPN No. 4: Conductors…
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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 using it, I am wondering…
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 overcurrent detection for the neutral…
IEEE 1584 Guide Equation for calculation of incident energy has a factor K2 for system grounding. It is zero for ungrounded and high or low resistance grounded systems and −0.113 for the solidly grounded (earthed)…
The 2015 edition of NFPA 70E has a simplified approach to provide minimum PPE for electrical workers within facilities with large and diverse electrical systems. The simplified clothing categogies listed in NFPA 70E 2015 Table…
From the previous article, the arcing current Ia was calculated from the bolted fault current. With the arcing current already known, the incident energy can then be calculated. To determine the incident energy using the…
