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It uses single lines to connect graphic symbols representing the different components to indicate the path and components of an electrical circuit.  \nNot all of the components may be shown in a 1-line diagram, but only the relevant components.  \nWhat is a 1-line diagram?  \nThe symbols on the diagram do not represent the size or location of the electrical equipment. But the diagram should be organized based on some kind of logic. In most cases it makes sense to organize the diagram based on the general locations of the components (ie indoor/outdoor) .  \nThe diagram should provide a fast, easy understanding of the connections and use of components  \nIn some cases it may make more sense to organize the diagram based on the circuit flow from component to component rather than locations.  \nThe design engineer should consider the stakeholders who need to read the information and draw them accordingly  \nWhat is a 1-line diagram?  \n[http://soveriegntysolar.files.wordpress.com/2012/07/809_typicalgridtiebatterybackup_web.jpg](http://soveriegntysolar.files.wordpress.com/2012/07/809_typicalgridtiebatterybackup_web.jpg)  \n1 Line diagram   \nWhat is a 3-line diagram?  \nAlso called a circuit diagram, it shows the connections to each component and every circuit is shown. Also, every electrical component relevant to the system is drawn in this diagram.  \nAs a result, a complete 3-line diagram can be used to create a bill of materials for the system. All components included in the 3-line diagram can be assigned a property that corresponds to a particular line item on the bill of materials.  \nFor materials inventory, non electrical components can be drawn and assigned a property as well. Examples are enclosures, fasteners, or other installation materials.  \n3-line diagram  \nPlease build a BOQ for the system below  \nExercise   \nPlease build a three line diagram and BOQ from single line diagram below","cbCaikuZOvpR9o0E","https://ap.wps.com/l/cbCaikuZOvpR9o0E","pdf",1214180,14,"English","# Purpose\n## What is a 1-line diagram?\n## What is a 3-line diagram?\n# Exercise","[{\"question\":\"What is the purpose of using 1-line and 3-line diagrams in the solar PV project?\",\"answer\":\"To introduce the concept of 1-line and 3-line diagrams as a means to communicate the solar PV system design to others involved in the project.\"},{\"question\":\"What does a 1-line diagram show, and how should it be organized?\",\"answer\":\"It shows circuit system information without requiring connection and operating details. It should use single lines to connect symbols and be organized logically, commonly by general locations (indoor/outdoor) or sometimes by circuit flow.\"},{\"question\":\"How is a 3-line diagram different from a 1-line diagram, and how can it support procurement?\",\"answer\":\"A 3-line diagram shows connections to each component and includes every relevant electrical component. A complete 3-line diagram can be used to create a bill of materials, and components (and even non-electrical items like enclosures or fasteners) can be assigned properties for inventory.\"}]","Rooftop Solar PV System Designers and Installers Training Curriculum - 1-Line and 3-Line Electrical Diagrams | PDF",1792960446,35]