Engineering Data for Copper and Aluminum Conductor ...

1 05551 THEOKONITECOMPANYTHEOKONITECOMPANYE ngineering Data for Copper andAluminum Conductor electrical Cables102 Hilltop Road, Ramsey, NJ Fax: Okonite 11/2017 Printed on post consumer paperOkonite higher Standard!2018 EditionThe Okonite Company, 2018 SECTION 1 General Conductor Information1 - 8 Stranding1 - 2dc Resistance3 - 4ac/dc Ratios5 - 7 Physical & Mechanical Properties8 SECTION 2 General Information9 - 11 Motor Currents9 - 10 Systems Diagrams10 Voltage Rating11 electrical Formulas11 SECTION 3 Voltage Regulation12 - 12 SECTION 4 Short Circuit Currents 14 - 15 Conductor Currents14 Shielding Currents15 SECTION 5 Shielding16 - 20 Discussion16 - 18 Induced Voltage, Current, and loss,Formulas19 Example Problems20 SECTION 6 - Ampacity Tables21 - 38 Discussion and Correction Factors21 Tables22-38 Single ConductorsUnderground ducts22 - 23 Underground Direct Burial24 - 25In Air34In Conduit37 Triplexed ConductorsUnderground Ducts26 - 27 Underground Direct Burial28 - 29In Air35In Conduit37 Three ConductorUnderground Ducts30 - 31 Underground Direct Burial32 - 33In Air36In Code Table38 SECTION 7 Installation Practices39 - 51 Conduit Sizes39 - 40 Maximum Pulling Tensions40 Example Problems41 Minimum Bending Radii42 Installation Procedures43 - 45 Borehole Cables (Safety Factor)

2 46 Sag and Tension Calculations47 - 51 SECTION 8 High Voltage Proof Testing52 - 53 High Voltage dc Field Testing52dc Field Acceptance Testing52 Test Limitations52 Test Notes53 Maintenance Proof Testing53 Frequency of Tests53 SECTION 9 Miscellaneous Information54 - 60 Formulas for CalculatingCharging Current54 Capacitance of Cables54 Insulation Resistance54 Jacket Materials Selection Chart55 Decimal Equivalents & TemperatureConversion Table56 Equivalents of Sq. In. and Circular MilsReel CapacitiesReusable Reels58 Reusable Reels59 - 60 Table of ContentsOkonite CablesPageSECTION 1 General Conductor InformationTABLE 1 - 1 Compact and Compressed Diameters1 TABLE 1 - 1 Solid and Concentric Stranding1 TABLE 1 - 2 Flexible Stranding2 TABLE 1 - 3 Resistance in Ohms per 1000 feet per Conductor at 20 Cand 25 C of solid wire and Class B Concentric Strands Copperand Aluminum Conductors3 TABLE 1 - 4 Copper and Aluminum Resistance-Temperature Correction Factors4 TABLE 1 - 5AC/DC Resistance Ratios - for Copper and Aluminum Conductors,60 Hertz (65 C)

3 5 TABLE 1 - 6 Conductor Resistance and Ampacities at High Frequencies6 TABLE 1 - 7 Copper Conductor Resistance and Ampacities at High Frequencies7 TABLE 1 - 8 Physical & Mechanical Properties of Conductor Materials8 TABLE 1 - 9 Breaking Strength - Bare Copper and Aluminum Wire8 SECTION 2 General InformationTABLE 2 - 1 Full-Load Currents of Motors in Amperes9 TABLE 2 - 2 Full-Load Currents of Motors in Amperes10 TABLE 2 - 3 electrical Formulas for Determining Amperes, Horsepower,Kilowatts and Kilovolt-Amperes11 SECTION 3 Voltage RegulationTABLE 3 - 1 Reactance of Conductors at 60Hz13 SECTION 4 Short Circuit CurrentsTABLE 4 - 1 Allowable Short Circuit Currents of Insulated Copper andAluminum Conductors14 TABLE 4 - 2 Permissible Short Circuit Currents for Copper ShieldingTape-Amperes15 SECTION 5 ShieldingTABLE 5 - 1 Operating Voltage Limits, kV, above which Insulation Shieldingis required16 TABLE 5 - 2 Maximum Lengths for Single Conductor Cables with Shields18 TABLE 5 - 3 Formulas for Calculating Shield Voltages-Currents and Losses forSingle- Conductor Cables19 SECTION 6 Ampacity TablesTABLE 6 - 1 Correction Factors for Various Ambient Air Temperatures21 TABLE 6 - 2 Correction Factors for Various Ambient Earth temperatures21 TABLE 6 - 3 Group Correction Factors - Cables in Air21 TABLE 6 - 4 Group Correction Factors - Conduits in Air21 TABLE 6 - 5 Single Conductor cable Underground Ducts - One Circuit, Three Cablesin Separate Ducts22 TABLE 6 - 6 Single Conductor cable Underground Ducts - Two Circuits, Six Cablesin Separate Ducts23 TABLE 6 - 7 Single Conductor cable Underground Ducts - Three Circuits, NineCables in Separate Ducts23 TABLE 6 - 8 Single Conductor cable Direct Burial - One Circuit.

4 Three Cables24 TABLE 6 - 9 Single Conductor cable Direct Burial - Two Circuits, Six Cables25 TABLE 6 - 10 Triplexed cable Underground Ducts - One Circuit, Three Single orTriplexed Conductors per Duct26 TABLE 6 - 11 Triplexed cable Underground Ducts - Three Circuits, Three Singleor Triplexed Conductors per Duct27 TABLE 6 - 12 Triplexed cable Underground Ducts - Six Circuits, Three Single orTriplexed Conductors per Duct27 List of TablesOkonite CablesPageTABLE 6 - 13 Triplexed cable Direct Burial - One Circuit29 TABLE 6 - 14 Triplexed cable Direct Burial - Two Circuits29 TABLE 6 - 15 Three Conductor cable Underground Ducts - One Circuit, One Cablein Duct Bank30 TABLE 6 - 16 Three Conductor cable Underground Ducts - Three Circuits, ThreeCables in Duct Bank31 TABLE 6 - 17 Three Conductor cable Underground Ducts - Six Circuits, Six Cablesin Duct Bank31 TABLE 6 - 18 Three Conductor cable Direct Burial - One Circuit, One Cable33 TABLE 6 - 19 Three Conductor cable Direct Burial - Two Circuits, Two Cables33 TABLE 6 - 20 Single Conductor cable in Air34 TABLE 6 - 21 Three Single Conductor Cables in Air35 TABLE 6 - 22 Three Conductor cable in Air36 TABLE 6 - 23 Three Single Conductor Cables in Conduit - in Air37 TABLE 6 - 24 Three Conductor cable - Conduit in Air - One Isolated Cable38 TABLE 6 - 25 NEC Code Installations Ampacity at 75 C Conductor Temperature30 C Ambient38 SECTION 7 Installation PracticesTABLE 7 - 1 Dimensions of Conduit39 TABLE 7 - 2 Percent Internal Area of Conduit or Tubing39 TABLE 7 - 3 Percent Internal Diameter of Conduit or Tubing39 TABLE 7 - 4 Maximum Allowable Diameter (in Inches)

5 Of Individual Cables inGiven Size of Conduit39 TABLE 7 - 5 Values of efa40 TABLE 7 - 6 Minimum Bending Radii - Power Cables without metallic Shieldingor Armor42 TABLE 7 - 7 AMinimum Bending Radii - Twisted Pair Instrumentation Cable42 TABLE 7 - 7 Minimum Bending Radii - Power Cables with metallic Shieldingor Armor42 TABLE 7 - 8 Minimum Bending Radii - Rubber Jacketed Flexible PortablePower and Control Cables used on Take-up Reels and Sheaves42 TABLE 7 - 9 Galvanized Steel Wire - Tensile Strength - Weight - Diameters46 TABLE 7 - 10 Sag Messenger Characteristics47 TABLE 7 - 11 Sag Tables49 TABLE 7 - 12 Sag Calculating Charts50 TABLE 7 - 13 Sag Calculating Charts51 SECTION 8 High Voltage Proof TestingTABLE 8 - 1 High Voltage Field Acceptance Test52 TABLE 8 - 2 High Voltage Maintenance Test53 TABLE 8 - 3 Frequency of Proof Testing53 SECTION 9 Miscellaneous InformationTABLE 9 - 1 Jacket Materials Selection Chart55 TABLE 9 - 2 Decimal Equivalents of One Inch56 TABLE 9 - 3 Temperature Conversion Table56 TABLE 9 - 4 Equivalents of Sq.

6 Mm, Sq. in. and Circular Mils57 TABLE 9 - 5 Capacity of Reusable Reels, Feet58 TABLE 9 - 6 Dimensions and Capacities of Reusable Reels for Wires and Cables59-60 List of TablesOkonite CablesMotor CurrentsElectrical FormulasVoltage RegulationShieldingShieldingShieldingShi eldingCONCRETEDUCTSINGLECONDUCTORCABLEA mpacity TabletsAmpacity TabletsEARTHPROTECTIVEBARRIERSAND7 36 Ampacity TabletsEARTHPROTECTIVEBARRIERSAND7 24 36 Ampacity TabletsEARTHCONCRETEDUCTTRIPLEXEDCABLEA mpacity TabletsAmpacity TabletsEARTHPROTECTIVEBARRIERSAND24 36 Ampacity TabletsAmpacity TabletsEARTHTREECONDUCTORCABLEDUCTA mpacity TabletsAmpacity TabletsEARTHPROTECTIVEBARRIERSAND24 36 Ampacity TabletsAmpacity TabletsMESSENGERWALLSINGLECONDUCTORCABLE A mpacity TabletsMESSENGERTHREE SINGLECONDUCTOR CABLESA mpacity TabletsTHREE Conductor CABLESMESSENGERA mpacity TabletsSUPPORT STRUCTURETHREE SINGLECONDUCTORCABLESA mpacity TabletsSUPPORT STRUCTURECONDUITTHREE Conductor CABLEA mpacity TabletsMethods

7 For DeterminingConduit SizesMinimumBending RadiiProcedures24 MINIMUM6 TO 8 3 TO 4 BACK-FILLPRELIMINARYCOVERINGOF SANDOR STONE FREEEARTHSOFT BEDDINGOF SANDOR STONEFREE EARTHP roceduresProceduresProceduresProceduresP roceduresMiscellaneousInformationMiscell aneousInformationMiscellaneousInformatio nMiscellaneousInformationMiscellaneousIn formationMiscellaneousInformationMiscell aneousInformatio