Engineering Data For Copper And Aluminum Conductor .
2018 EditionPrinted on post consumer paperOkonite 11/2017Engineering Data for Copper andAluminum Conductor Electrical Cables05551THEOKONITECOMPANY102 Hilltop Road, Ramsey, NJ 07446 201.825.0300 Fax: 201.825.9026 www.okonite.comTHEOKONITECOMPANYOkonite Cables.A higher Standard!
The Okonite Company, 2018
Okonite CablesTable of ContentsSECTION 1General Conductor InformationStrandingdc Resistanceac/dc RatiosPhysical & Mechanical Properties1-81-23-45-78SECTION 2 General InformationMotor CurrentsSystems DiagramsVoltage RatingElectrical Formulas9 - 119 - 10101111SECTION 3 Voltage Regulation12 - 12SECTION 4 Short Circuit Currents 14 - 15Conductor Currents14Shielding Currents15SECTION 5 Shielding16 - 20Discussion16 - 18Induced Voltage, Current, and loss,Formulas19Example Problems20SECTION 6 - Ampacity Tables21 - 38Discussion and Correction Factors21Tables22-38Single ConductorsUnderground ductsUnderground Direct BurialIn AirIn Conduit22 - 2324 - 253437Triplexed ConductorsUnderground DuctsUnderground Direct BurialIn AirIn Conduit26 - 2728 - 293537Three ConductorUnderground DuctsUnderground Direct BurialIn AirIn ConduitN.E.C. Code Table30 - 3132 - 33363838SECTION 7 Installation PracticesConduit SizesMaximum Pulling TensionsExample ProblemsMinimum Bending RadiiInstallation ProceduresBorehole Cables (Safety Factor)Sag and Tension Calculations39 - 5139 - 4040414243 - 454647 - 51SECTION 8High Voltage Proof TestingHigh Voltage dc Field Testingdc Field Acceptance TestingTest LimitationsTest NotesMaintenance Proof TestingFrequency of Tests52 - 53525252535353SECTION 9Miscellaneous Information54 - 60Formulas for CalculatingCharging Current54Capacitance of Cables54Insulation Resistance54Jacket Materials Selection Chart55Decimal Equivalents & TemperatureConversion Table56Equivalents of Sq. MM.57Sq. In. and Circular MilsReel CapacitiesReusable Reels58Reusable Reels59 - 60
Okonite CablesList of TablesPageSECTION 1 General Conductor InformationTABLE 1 - 1Compact and Compressed DiametersTABLE 1 - 1Solid and Concentric StrandingTABLE 1 - 2Flexible StrandingTABLE 1 - 3Resistance in Ohms per 1000 feet per Conductor at 20 Cand 25 C of solid wire and Class B Concentric Strands Copperand Aluminum ConductorsTABLE 1 - 4Copper and Aluminum Resistance-Temperature Correction FactorsTABLE 1 - 5AC/DC Resistance Ratios - for Copper and Aluminum Conductors,60 Hertz (65 C)TABLE 1 - 6Conductor Resistance and Ampacities at High FrequenciesTABLE 1 - 7Copper Conductor Resistance and Ampacities at High FrequenciesTABLE 1 - 8Physical & Mechanical Properties of Conductor MaterialsTABLE 1 - 9Breaking Strength - Bare Copper and Aluminum WireSECTION 2 General InformationTABLE 2 - 1Full-Load Currents of Motors in AmperesTABLE 2 - 2Full-Load Currents of Motors in AmperesTABLE 2 - 3Electrical Formulas for Determining Amperes, Horsepower,Kilowatts and Kilovolt-AmperesSECTION 3 Voltage RegulationTABLE 3 - 1Reactance of Conductors at 60HzSECTION 4 Short Circuit CurrentsTABLE 4 - 1Allowable Short Circuit Currents of Insulated Copper andAluminum ConductorsTABLE 4 - 2Permissible Short Circuit Currents for Copper ShieldingTape-AmperesSECTION 5 ShieldingTABLE 5 - 1Operating Voltage Limits, kV, above which Insulation Shieldingis requiredTABLE 5 - 2Maximum Lengths for Single Conductor Cables with ShieldsTABLE 5 - 3Formulas for Calculating Shield Voltages-Currents and Losses forSingle-Conductor CablesSECTION 6 Ampacity TablesTABLE 6 - 1Correction Factors for Various Ambient Air TemperaturesTABLE 6 - 2Correction Factors for Various Ambient Earth temperaturesTABLE 6 - 3Group Correction Factors - Cables in AirTABLE 6 - 4Group Correction Factors - Conduits in AirTABLE 6 - 5Single Conductor Cable Underground Ducts - One Circuit, Three Cablesin Separate DuctsTABLE 6 - 6Single Conductor Cable Underground Ducts - Two Circuits, Six Cablesin Separate DuctsTABLE 6 - 7Single Conductor Cable Underground Ducts - Three Circuits, NineCables in Separate DuctsTABLE 6 - 8Single Conductor Cable Direct Burial - One Circuit, Three CablesTABLE 6 - 9Single Conductor Cable Direct Burial - Two Circuits, Six CablesTABLE 6 - 10Triplexed Cable Underground Ducts - One Circuit, Three Single orTriplexed Conductors per DuctTABLE 6 - 11Triplexed Cable Underground Ducts - Three Circuits, Three Singleor Triplexed Conductors per DuctTABLE 6 - 12Triplexed Cable Underground Ducts - Six Circuits, Three Single orTriplexed Conductors per 62727
Okonite CablesList of TablesPageTABLE 6 - 13TABLE 6 - 14TABLE 6 - 15Triplexed Cable Direct Burial - One CircuitTriplexed Cable Direct Burial - Two CircuitsThree Conductor Cable Underground Ducts - One Circuit, One Cablein Duct BankTABLE 6 - 16Three Conductor Cable Underground Ducts - Three Circuits, ThreeCables in Duct BankTABLE 6 - 17Three Conductor Cable Underground Ducts - Six Circuits, Six Cablesin Duct BankTABLE 6 - 18Three Conductor Cable Direct Burial - One Circuit, One CableTABLE 6 - 19Three Conductor Cable Direct Burial - Two Circuits, Two CablesTABLE 6 - 20Single Conductor Cable in AirTABLE 6 - 21Three Single Conductor Cables in AirTABLE 6 - 22Three Conductor Cable in AirTABLE 6 - 23Three Single Conductor Cables in Conduit - in AirTABLE 6 - 24Three Conductor Cable - Conduit in Air - One Isolated CableTABLE 6 - 25NEC Code Installations Ampacity at 75 C Conductor Temperature30 C AmbientSECTION 7 Installation PracticesTABLE 7 - 1Dimensions of ConduitTABLE 7 - 2Percent Internal Area of Conduit or TubingTABLE 7 - 3Percent Internal Diameter of Conduit or TubingTABLE 7 - 4Maximum Allowable Diameter (in Inches) of Individual Cables inGiven Size of ConduitTABLE 7 - 5Values of efaTABLE 7 - 6Minimum Bending Radii - Power Cables without Metallic Shieldingor ArmorTABLE 7 - 7AMinimum Bending Radii - Twisted Pair Instrumentation CableTABLE 7 - 7Minimum Bending Radii - Power Cables with Metallic Shieldingor ArmorTABLE 7 - 8Minimum Bending Radii - Rubber Jacketed Flexible PortablePower and Control Cables used on Take-up Reels and SheavesTABLE 7 - 9Galvanized Steel Wire - Tensile Strength - Weight - DiametersTABLE 7 - 10Sag Messenger CharacteristicsTABLE 7 - 11Sag TablesTABLE 7 - 12Sag Calculating ChartsTABLE 7 - 13Sag Calculating ChartsSECTION 8 High Voltage Proof TestingTABLE 8 - 1High Voltage Field Acceptance TestTABLE 8 - 2High Voltage Maintenance TestTABLE 8 - 3Frequency of Proof TestingSECTION 9 Miscellaneous InformationTABLE 9 - 1Jacket Materials Selection ChartTABLE 9 - 2Decimal Equivalents of One InchTABLE 9 - 3Temperature Conversion TableTABLE 9 - 4Equivalents of Sq. mm, Sq. in. and Circular MilsTABLE 9 - 5Capacity of Reusable Reels, FeetTABLE 9 - 6Dimensions and Capacities of Reusable Reels for Wires and 4647495051525353555656575859-60
Motor Currents
Electrical Formulas
Voltage Regulation
Shielding
Shielding
Shielding
Shielding
Ampacity TabletsCONCRETEDUCTSINGLECONDUCTORCABLE
Ampacity Tablets
Ampacity Tablets36 “EARTHPROTECTIVEBARRIERSAND7½“
Ampacity TabletsEARTHPROTECTIVEBARRIERSAND7½“24 “36 “
Ampacity TabletsEARTHCONCRETEDUCTTRIPLEXEDCABLE
Ampacity Tablets
Ampacity TabletsEARTH36 “PROTECTIVEBARRIERSAND24 “
Ampacity Tablets
Ampacity TabletsEARTHDUCTTREECONDUCTORCABLE
Ampacity Tablets
Ampacity TabletsEARTHPROTECTIVEBARRIER36 “SAND24 “
Ampacity Tablets
Ampacity TabletsMESSENGERWALLSINGLECONDUCTORCABLE
Ampacity TabletsMESSENGERTHREE SINGLECONDUCTOR CABLES
Ampacity TabletsMESSENGERTHREE CONDUCTOR CABLES
Ampacity TabletsSUPPORT STRUCTURETHREE SINGLECONDUCTORCABLES
Ampacity TabletsSUPPORT STRUCTURECONDUITTHREE CONDUCTOR CABLE
Methods for DeterminingConduit Sizes
MinimumBending Radii
Procedures
ProceduresBACK-FILL24”MINIMUM6” TO 8”PRELIMINARYCOVERINGOF SANDOR STONE FREEEARTH3” TO 4”SOFT BEDDINGOF SANDOR STONEFREE EARTH
Procedures
Procedures
Procedures
Procedures
MiscellaneousInformation
MiscellaneousInformation
MiscellaneousInformation
MiscellaneousInformation
MiscellaneousInformation
MiscellaneousInformation
MiscellaneousInformation
Underground ducts 22 - 23 Underground Direct Burial 24 - 25 In Air 34 In Conduit 37 Triplexed Conductors Underground Ducts 26 - 27 Underground Direct Burial 28 - 29 In Air 35 In Conduit 37 Three Conductor Underground Ducts 30 - 31 Underground Direct Burial 32 - 33 In Air 36 In Conduit 38 N.E.C. Code Table 38 SECTION 7 Installation Practices 39 - 51
36 copper tube (a) - high side copper 4a1846-01 1 1 1 1 37 copper tube (b) - high side copper 3a1317-01 1 1 1 1 38 copper tube (c) - high side copper 3a1316g01 1 1 1 1 39 copper tube (d) - high side copper 3a1311g01 1 1 1 1 40 heat exchanger copper 2a1498g01 1 1 1 1 41 strainer - 4a0397-01 1 1 1 1 42 copper tube (a) - hot gas copper 4a1878-01 1 .
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The World Copper Factbook 2021 International Copper Study Group Chapter 5: Copper Trade 28 Major International Trade Flows of Copper Ores and Concentrates 29 Major International Trade Flows of Copper Blister and Anode 30 Major International Trade Flows of Refined Copper 31 Leading Exporters and Importers of Semi-Fabricated Copper Products, 2020 32
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