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Covers required inputs (P&IDs, load lists, distribution philosophy, basis of design, and layout drawings) and detailed drafting and review rules: use proper ABBREVIATIONS and terminology, follow legend sheets, avoid mixing ANSI and IEC symbols, show future expansion capability, and indicate normal switching mode (open/close). Lists specific single-line content per IEEE 141-1993, including utility supply, transformers, switchgear, and motor load details plus grounding and metering expectations.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/electrical-drawing-preparation-single-lines-and-grounding-plans/663425/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/electrical-drawing-preparation-single-lines-and-grounding-plans/663425.png","ImageObject",300,407,{"name":92,"@type":93},"Damian","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What inputs are required before creating the electrical single-line drawings?","Question",{"text":112,"@type":113},"The material lists P&IDs, a load list, distribution philosophy, basis of design, and layout drawings as required inputs.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What drafting rules must be followed for the drawings and legends?",{"text":117,"@type":113},"It specifies using proper ABBREVIATIONS and terminology, following the legend sheet, not mixing ANSI and IEC symbols for the same item type, and indicating future expansion capability and normal operational mode for switching devices.",{"name":119,"@type":110,"acceptedAnswer":120},"What information must be included in the single-line drawings for utility supplies and transformers?",{"text":121,"@type":113},"Utility requirements include available short-circuit current (with X/R ratio), line supply voltage, high-voltage protective devices and switches, normal operating mode, and relay types. Transformer requirements include nameplate ratings (kVA and kV), temperature rise, cooling method, voltage taps and winding connections, impedance and kVA base, grounding scheme and neutral resistor details, and surge arrestors/capacitors with connections and switching when applicable.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},663425,1793227692,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},137451208677,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","IEEE-IAS Atlanta Section  \nElectrical Drawing Preparation Single Lines and Grounding Plans  \nMark A. Sorrells, PE May 20, 2013  \n[msorrells.ee85@ieee.org](msorrells.ee85@ieee.org)  \nCopyright May 20, 2013 by CH2M HILL • Company Confidential  \nElectrical Drawing Preparation Single Lines  \nElectrical Drawing Preparation Single Lines  \n􀀁 INPUTS:  \n– P&ID’s  \n– Load List  \n– Distribution Philosophy  \n– Basis of Design  \n– Layout Drawings  \nElectrical Drawing Preparation Single Lines  \n􀀁 P&ID’s  \n– Process Motor Loads  \n– Process Heater Loads  \n– Heat Tracing  \n􀀁 Load List  \n– Non-Process Motors  \n• HVAC  \n• Air Compressors / Vacuum Pumps  \n– Lighting  \n• Indoor  \n• Outdoor  \n– UPS for Communications / Security / Fire Alarm  \nElectrical Drawing Preparation Single Lines  \n􀀁 Distribution Philosophy  \n– Voltage Level(s)  \n– Distribution Scheme  \n– Protection Scheme / Philosophy  \n– Selectivity  \n􀀁 Basis of Design  \n– Motor HP / Voltage Ranges  \n– Motor Protection Philosophy  \n– Lighting Voltage  \n􀀁 Layout Drawings  \n– Location of Electrical Rooms & Transformers  \n– Load Concentration(s)  \nElectrical Drawing Preparation Single Lines  \n􀀁 Use the proper ABBREVIATIONS.  \n􀀁 Follow the LEGEND sheet.  \n􀀁 Don’t mix ANSI and IEC symbols for the same item type.  \n􀀁 Proper TERMINOLOGY (Ratings, Equipment)  \n􀀁 Indicate FUTURE expansion capability.  \n􀀁 Indicate normal operational mode (OPEN/ CLOSE) for all switching devices  \n􀀁 Provide a front VIEW.  \nElectrical Drawing Preparation Single Lines (IEEE 141-1993 )  \nInclude the following:  \n􀀁 Utility Supply System  \n– Available SC current (including X/R ratio)  \n– Line supply voltage  \n– High-voltage protective devices and switches  \n– Show the normal operating mode  \n– Type(s) of relays  \nElectrical Drawing Preparation Single Lines (IEEE 141-1993 )  \n􀀁 Transformers  \n– Nameplate rating(s) (kVA and kV) and temperature rise  \n– Cooling Method (ONAN, ONAF {AA, FA})  \n– High-voltage winding voltage taps and winding connection (delta/wye)  \n– Low-voltage winding voltage taps and winding connection (delta/wye)  \n– Impedance and kVA base  \n– Grounding scheme and ohmic value of neutral resistor(s) if used; show connections  \n– Surge arrestors and capacitors (show switching if switched), and connections  \n– Metering of utility supply, primary protective devices  \nElectrical Drawing Preparation Single Lines (IEEE 141-1993 )  \n􀀁 Switchgear  \n– Manufacturer(s), type, model, current rating, MVA class  \n– Symmetrical interrupting current rating, and asymmetrical momentary/closing-and-latching current rating for main, tie, and feeder devices  \n– Phase arrangement, voltage, ampacity, bracing of bus  \nElectrical Drawing Preparation Single Lines (IEEE 141-1993 )  \n􀀁 Motor loads  \n– List individual medium-voltage motors including HP/KW, RPM, and type (induction, synchronous)  \n– Include powerhouse motors (chillers, compressors, etc.)  \n– LV motors on MCC’s: Categorize load by size(s) ata minimum  \n– Indicate all VFD motors, RV starters","cbCaic9rLGFplpgC","https://ap.wps.com/l/cbCaic9rLGFplpgC","pdf",3277607,25,"English","# Electrical Drawing Preparation Single Lines and Grounding Plans\n## Inputs and planning package\n## Drafting rules for single-line drawings\n## IEEE 141-1993 content requirements (single lines)\n## Utility supply system\n## Transformers\n## Switchgear\n## Motor loads","[{\"question\":\"What inputs are required before creating the electrical single-line drawings?\",\"answer\":\"The material lists P\\u0026IDs, a load list, distribution philosophy, basis of design, and layout drawings as required inputs.\"},{\"question\":\"What drafting rules must be followed for the drawings and legends?\",\"answer\":\"It specifies using proper ABBREVIATIONS and terminology, following the legend sheet, not mixing ANSI and IEC symbols for the same item type, and indicating future expansion capability and normal operational mode for switching devices.\"},{\"question\":\"What information must be included in the single-line drawings for utility supplies and transformers?\",\"answer\":\"Utility requirements include available short-circuit current (with X/R ratio), line supply voltage, high-voltage protective devices and switches, normal operating mode, and relay types. Transformer requirements include nameplate ratings (kVA and kV), temperature rise, cooling method, voltage taps and winding connections, impedance and kVA base, grounding scheme and neutral resistor details, and surge arrestors/capacitors with connections and switching when applicable.\"}]","Electrical Drawing Preparation Single Lines and Grounding Plans | PDF",63]