The Philippine Distribution Code establishes the basic rules and procedures that govern the operation, maintenance, development, connection, and use of
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Engr. Jared Cuchapin is a registered electrical engineer from the Philippines. He currently works at Davao Light and Power Co, Inc. , the 3rd largest distribution utility in the Philippines. His professional expertise is in the design & implementation of power lines and power substations ranging from 240V-138kV. He loves to share his experience and resources to other professionals.
What is Ruling Span?
If all spans in a section of line are of the same length then the tension on individual span will
Continue readingCreep Phenomenon on Transmission Line Conductors
Creep is a phenomenon which affects most materials subjected to stress. It manifest itself by an inelastic stretch (or permanent
Continue readingSample Calculation of Sag and Tension in Transmission Line – Uneven Elevation
In the previous post, we calculated the sag and tension of a transmission line given that the conductors supports are at
Continue readingSample Calculation of Sag and Tension of Transmission Line – Even Elevation
This is an example calculation for sag and tension in the transmission line. You may opt to review first the
Continue readingPEC 2017 – Article 2.25
This article covers requirements for outside branch circuits and feeders run on or between buildings, structures, or poles on the premises; and electrical equipment and wiring for the supply of utilization equipment that is located on or attached to the outside of buildings, structures, or poles.
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This article provides requirements for calculating branch-circuit, feeder, and service loads. Part 2.20.1 provides general requirements for calculation methods. Part 2.20.2 provides calculation methods for branch-circuit loads. Parts 2.20.3 and 2.20.4 provide calculation methods for feeder and service loads. Part 2.20.5 provides calculation methods for farm loads.
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This article covers the installation requirements, overcurrent protection requirements, minimum size, and ampacity of conductors for feeders.
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This article covers general requirements for examination, approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations.
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This article covers general requirements for examination, approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations.
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