Learn How to Perform Calculations of Electrical Loads and Design the Protection System

Course Description

This course is a step-by-step guide on performing various load calculations and analyses dedicated to power engineers. It covers load and thermal current calculations, cable sizing, voltage drop, short circuit calculations, and circuit breaker & transformer sizing.

It consists of 19 lessons in 7 hours 41 min. length. English subtitles are included.

This course is closely related to electrical distribution systems and various contracting works. In this
course, you will learn the purpose of detailed calaculations of electrical loads and the difference between dynamic or motors loads and static loads.

We’ll thoroughly explain the importance of including derating factors (DF) in electrical load calculations and what happens if we ignore these factors.

Special attention is given voltage drop (VD) and short circuit (SC) calculations for electrical power cables. You will learn how to choose the correct cross-section area for the neutral cable and the
earthing cable conductor.

The course provides a step-by-step guidanace on how to perform the correct and accurate calculation for any static load, dynamic or motor load, including the starting current for any motor. You will also learn to perform calculations of the power cable and the main circuit breaker (C.B) for a group of individual motors or different loads.

An example of dynamic or motor load calculations is included.

Next, the course explains a very important example of the office building calculations (different static loads and dynamic or motor loads like water pumps, chillers, and elevators) for basement floor, ground floor, first floor, second floor, and roof floor with. We’ll calculate the rated current of each circuit breaker (CB) in ampere (A), and cross-section area (CSA) of each cable in square-mm.

Finally, the last lecture is dedicated to the distribution transformer and the main distribution board
calculations.