Review the plan of the industry for which you intend to design the electrical diagram. The plans should show the structure of various buildings, their designs and dimensions. The plan should also show the designated locations for the main electrical components, such as any generators and electrical boxes should be that will give you an idea on how to design your electrical drawing.
Place the drawing paper on the drawing board and draw along its edges the margins and the title block containing information of the drawing such as its title, scale and where it will be used. Use a pencil to draw any lines in the paper and the pen to write down information on the paper such as the wordings in the title block.
Draw straight lines representing the electricity cables and make a 90-degree joint at any corner that they make. Use rulers to ensure the lines are straight and set squares to guarantee the angles. The electric cables should be drawn in such a way that if superimposed on the industry’s plan, they would appear to run along the walls or conduits in the plans of the buildings.
Insert the appropriate symbols for each electrical component that should occupy a particular space in the diagram, such as switches, transformers, generators and control panels at appropriate and planned locations in the drawing. Refer to the ISO standards regarding technical drawing for the guidelines of execution of the designing process, including appropriate symbols to use in your diagram.
Transfer the design of your draft to a computer using technical drawing software such as Edraw Max. Through this software, you are able to analyze any flaws in your design and improve on your precision and accuracy. After all the necessary scrutiny is done, you may proceed to print a final copy of the electrical diagram.