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Includes scope notes for replacing and relocating poles, anchors, transformers, and overhead lines, plus communications and bell conduit routing. Provides load and demand calculations for schools under the Ontario Electrical Safety Code, resulting in selected 347/600V 3-phase 4-wire service and a new 500kVA padmounted transformer. Notes cover exterior parking lot lighting, conduit sizes, hand holes, and coordination with architectural, structural, and mechanical components.",{"@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":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/st-gregory-catholic-school-site-plan-power-lighting-and-systems/648816/",{"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/st-gregory-catholic-school-site-plan-power-lighting-and-systems/648816.png","ImageObject",300,407,{"name":92,"@type":93},"Ezra","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-31","2026-10-23",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 electrical service voltage and wiring configuration is selected for the school?","Question",{"text":112,"@type":113},"The document specifies a desired service voltage of 347/600V, 3-phase, 4-wire, with a selected standard service size of 600A to exceed the calculated minimum.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How is the minimum service size determined?",{"text":117,"@type":113},"A worst-case mechanical load and other allowances are combined into total kilowatts, then converted to demand load using demand factors. The theoretical peak current is calculated, multiplied by 1.25 for minimum service size, and then compared against available service standards for future proofing.",{"name":119,"@type":110,"acceptedAnswer":120},"What major equipment changes are described for the power system?",{"text":121,"@type":113},"Hydro One work includes replacing or relocating poles and anchors, installing a new HV-347/600V 3-phase padmounted transformer, and providing new dip poles and associated overhead power lines, with coordination for removal of existing poles and overhead lines.","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},648816,1792795509,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"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":81,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":39},1099514068035,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","| \u003Cbr>HYDRO ONE TO REPLACE POLE, ANCHOR, TRANSFORMER AND ACCESSORIES WITH A POLE WITH HV CROSS ARM TO CROSS THE STREET\u003Cbr>HYDRO ONE TO PROVIDE\u003Cbr>3 PHASE OVERHEAD LINE TO NEW DIP POLE ON SOUTH SIDE\u003Cbr>HYDRO ONE TO PROVIDE NEW HIGH VOLTAGE DIP POLE FOR POWER AND BELL/ COMMUNICATIONS POLE AND ANCHOR\u003Cbr>REFER TO PRIMARY DUCTBANK DETAIL 1/502\u003Cbr>PC S LP F 1\u003Cbr>TRUE NORTH\u003Cbr>PD S2 LP F 1\u003Cbr>PD S2\u003Cbr>LP F 1\u003Cbr>CONSTRUCTION NORTH\u003Cbr>HH\u003Cbr>HYDRO ONE TO REMOVE POLE, ANCHOR AND OVERHEAD LINES (COORDINATED WITH BELL) AND PROVIDE NEW RELOCATED IN NEW LOCATIONS INDICATED.\u003Cbr>PROVIDE 2 OF 53mmC C/W 12mm POLY PULL ROPE IN EACH CONDUIT AND WIRING FROM MAIN OFFICE RECEPTION TO PYLON SIGN PER DETAIL 3/502\u003Cbr>PB S\u003Cbr>LP F 1\u003Cbr>REFER TO COMMUNICATIONS DUCTBANK DETAIL 2/502\u003Cbr>\u003Cbr>\u003Cbr>WP\u003Cbr>WS\u003Cbr>LP 1AA 9\u003Cbr>PALP F 1\u003Cbr>WS\u003Cbr>LP 1AA 9\u003Cbr>WP\u003Cbr>P\u003Cbr>WS\u003Cbr>LP 1AA 9\u003Cbr>HYDRO ONE TO PROVIDE NEW POLE, ANCHOR, BOLLARDS AND OVERHEAD\u003Cbr>LINES TO REFEED PICTON FARM SUPPLY. POLE TO ALSO ACCEPT OVERHEAD BELL LINE\u003Cbr>PB S LP F 1\u003Cbr>SERVICE SIZE CALCULATION\u003Cbr>ELECTRICAL SERVICE SIZE CALCULATION FOR SCHOOLS (PER ONTARIO ELECTRICAL SAFETY CODE (OESC) SECTION 8 204, SCHOOLS):\u003Cbr>TOTAL CLASSROOM AREA: 2,055 SQ. M\u003Cbr>TOTAL NON CLASSROOM AREA: 1,823 SQ. M\u003Cbr>TOTAL GROSS AREA: 3,878 SQ. M (OVER 2 FLOORS)\u003Cbr>BASIC LOAD = 50 W/SQ. M X 2,055 SQ. M + 10 W/SQ. M X 1,823 SQ.\u003Cbr>M = 121 KW\u003Cbr>WORST CASE MECHANICAL LOAD (COOLING SEASON) = 364.8 KW ELEVATOR LOAD (ESTIMATE) = 35 KW\u003Cbr>EXTERIOR PARKING LOT LIGHTING = 2.1 KW\u003Cbr>ELECTRIC VEHICLE SUPPLY EQUIPMENT LOAD = 0 KW THEATRICAL LIGHTING = 0 KW\u003Cbr>SPARE CAPACITY (INCL FOR FUTURE CLASSROOMS/PORTABLES)= 123 KW\u003Cbr>TOTAL KW = 646 KW\u003Cbr>KW/SQ. M = 0.167 KW/SQ. M\u003Cbr>DEMAND LOAD = 75% X 0.167 KW/SQ. M X 900 SQ. M +\u003Cbr>50% X 0.167 KW/SQ. M X (3,878 SQ. M-900 SQ. M)\u003Cbr>= 362 KW\u003Cbr>DESIRED SERVICE VOLTAGE = 347/600V 3 PHASE-4 WIRE\u003Cbr>THEORETICAL PEAK = (362 KW X 1000)/(ROOT 3 X 600V) = 350A MINIMUM SERVICE SIZE = 350A X 1.25 = 437.5A\u003Cbr>THE MINIMUM SERVICE SIZE EXCEEDS A 400A SERVICE SO FOR FUTURE PROOFING THE NEXT STANDARD SIZE IS SELECTED.\u003Cbr>THEREFORE, THE NEXT STANDARD SERVICE SIZE = 600A 347/600V 3 PHASE-4 WIRE\u003Cbr>NEW 500KVA HV-347/600V-3 PHASE PADMOUNTED TRANSFORMER.\u003Cbr>TRANSFORMER BY HYDRO ONE. CONTRACTOR TO PROVIDE BROOKLIN CONCRETE PAD,& COVER, GROUNDING, BOLLARDS, ETC. REFER TO DETAIL 8/502 .\u003Cbr>PA S\u003Cbr>LP F 1\u003Cbr>NOTES\u003Cbr>1. LIGHT POLE CONCRETE BASES ARE PROVIDED AND INSTALLED BY THE ELECTRICAL CONTRACTOR.\u003Cbr>CONTRACT DRAWINGS\u003Cbr>CONTRACT DRAWINGS FOR ELECTRICAL WORK ARE IN PART DIAGRAMMATIC, INTENDED TO CONVEY THE SCOPE OF WORK AND GENERAL ARRANGEMENT FOR EQUIPMENT, CONDUIT AND OUTLETS. CONTRACTOR TO COORDINATE LAYOUT OF ELECTRICAL SYSTEMS WITH ARCHITECTURAL, STRUCTURAL, AND MECHANICAL BUILDING COMPONENTS, AS WELL AS OTHER ELECTRICAL SYSTEMS. PROVIDE ADDITIONAL JUNCTION BOXES, FITTINGS, SUPPORTS, ETC. REQUIRED TO FACILITATE THE WORK. NO EXTRA PAYMENTS ARISING FROM FAILURE TO MAKE THIS COORDINATION WILL BE CONSIDERED.\u003Cbr>PA S LP F 1\u003Cbr>POST C/W GFCI RECEPTACLE & WHILE IN USE COVER LP 1AA 23 SHED\u003Cbr>LEGEND\u003Cbr>HH\u003Cbr>P\u003Cbr>POLYMER CONCRETE HAND HOLE WITH 20K LID. MARKED WITH \"ELECTRIC\" LOGO.\u003Cbr>MOUNT FLUSH WITH GROUND. STANDARD OF ACCEPTANCE HUBBELL OR APPROVED ALTERNATE.\u003Cbr>MINIMUM HAND HOLE SIZE OF 12\"x12\"x12\" (310mm x 310mm x 310mm) TYPICAL. FOR THE POWER HAND HOLE FOR FUTURE PORTABLES THE MINIMUM SIZE WOULD BE 11\" x 18\" x 12\" (280mm x 460mm x 310mm) TO ACCOMODATE BENDING.\u003Cbr>WALL MOUNTED P/A SPEAKERS SUITABLE FOR OUTDOOR INSTALLATION C/W PROTECTIVE CAGE (COORDINATE EXACT LOCATION ON SITE) .\u003Cbr>PROVIDE CONDUIT AND WIRING TO SITE LIGHTING PER DETAIL 4/502 .\u003Cbr>2 \\#8 & 1 \\#10 BOND IN 27mmC\u003Cbr>WP\u003Cbr>P\u003Cbr>ALP 1AA 22\u003Cbr>HOAPC\u003Cbr>WS\u003Cbr>LP 1CC 11\u003Cbr>\u003Cbr>EXTEND FIRE ALARM CONDUIT TO\u003Cbr>MECH/ELEC M101\u003Cbr>(2x53mmC)\u003Cbr>REFER TO DETAIL 9/502 . EXTEND COMMS CONDUIT TO\u003Cbr>IT ROOM E101\u003Cbr>(2x53mmC)\u003Cbr>REFER TO DETAIL 9/502 .\u003Cbr>EXTEND POWER CONDUIT TOMECH/ELEC M101 (2x103mmC)\u003Cbr>REFER TO DETAIL 9/502 .\u003Cbr>LP 1CC 11 WS\u003Cbr>LP 1CC 11 WS\u003Cbr>L","cbCaiotxF1ZRDAzF","https://ap.wps.com/l/cbCaiotxF1ZRDAzF","pdf",1358360,"English","# Electrical Service Size Calculation\n## Load and Demand Calculations\n# Site Power, Lighting and Systems Scope Notes\n## Pole, Transformer and Overhead Line Work\n## Communications, Fire Alarm and Conduit Routing\n## Lighting Controls and Exterior Lighting","[{\"question\":\"What electrical service voltage and wiring configuration is selected for the school?\",\"answer\":\"The document specifies a desired service voltage of 347/600V, 3-phase, 4-wire, with a selected standard service size of 600A to exceed the calculated minimum.\"},{\"question\":\"How is the minimum service size determined?\",\"answer\":\"A worst-case mechanical load and other allowances are combined into total kilowatts, then converted to demand load using demand factors. The theoretical peak current is calculated, multiplied by 1.25 for minimum service size, and then compared against available service standards for future proofing.\"},{\"question\":\"What major equipment changes are described for the power system?\",\"answer\":\"Hydro One work includes replacing or relocating poles and anchors, installing a new HV-347/600V 3-phase padmounted transformer, and providing new dip poles and associated overhead power lines, with coordination for removal of existing poles and overhead lines.\"}]","St. Gregory Catholic School - Site Plan-Power, Lighting and Systems | PDF"]