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Category: Transmission lines design

Difference between MCB, MCCB, ACB, and VCB

Posted on September 21, 2025September 24, 2025 by Engr. Hamid Ali

MCB, MCCB, ACB, and VCB are most common types of Circuit breakers. Circuit breakers are essential devices that we use to protect electrical systems from faults and overloads. They come in different types depending on the application, voltage level, and breaking capacity. MCB (Miniature Circuit Breaker) MCCB (Moulded Case Circuit Breaker): ACB (Air Circuit Breaker):…

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Sag templates & Curves

Posted on January 21, 2025January 22, 2025 by Engr. Hamid Ali

Sag templates are a critical tool in the design and construction of transmission lines. We usually use these to determine the vertical position of conductors (and ground wires) under specified design conditions, ensuring that the transmission line provides adequate clearance to the ground and other facilities. Below is a detailed explanation of sag templates based…

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Most Common Electrical engineering interview questions

Posted on October 24, 2024August 18, 2025 by Engr. Hamid Ali

in this post we are going to explain most Common Electrical engineering interview questions. The question here will focus on Overhead Power Transmission Lines. Following are some of the important and most Common Electrical engineering interview questions Why use high-voltage instead of low Voltage for transmission? The best answer to that question is that high-voltage…

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Leading OHTL Contractors in KSA

Leading OHTL Contractors in KSA

Posted on October 14, 2024December 16, 2024 by Engr. Hamid Ali

Leading OHTL Contractors in KSA is a special post for Electrical, Civil, Mechanical, QC/QA, Computer, Telecom and Safety Engineers as well as for IT, Finance and management related people. We are providing you a list of Top and leading OHTL contractors in KSA with their official website, apply links along with the new 380kV or…

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Top software programs for Electrical Engineers

Posted on October 12, 2024August 12, 2025 by Engr. Hamid Ali

This unique post about Top software programs for Electrical Engineers is for those engineers who are seeking jobs in Saudi Arabia. Mastering key software tools can significantly boost their employability, especially in industries like power generation, transmission, oil & gas, and construction. Below is a list of the top software programs to focus on: 1. PLS-CADD…

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Latticed Steel Structures

Posted on December 18, 2023August 21, 2025 by Engr. Hamid Ali

This post is about Latticed Steel Structures and Towers that are mostly used in KSA. In KSA for Transmission lines we follow SEC Standards. Saudi electricity Company provides the outline/fabrication drawings of different types of latticed steel towers. There are many types of towers used for 380kV transmission lines in KSA like F-Series, MF Series…

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Transmission lines design important points

Posted on August 26, 2023August 28, 2023 by Engr. Hamid Ali

In this post we are presenting to Transmission lines design important points. These points are from Saudi electricity company’s design, engineering, materials and construction standards. SEC follows their own standards for transmission, substation and Underground cables design and construction standards.These important points are taken from below Standards. Operating Areas in KSA Saudi electricity company divide…

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