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.

2 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)

3 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

4 Ratios - for Copper and Aluminum Conductors,60 Hertz (65 C)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.

5 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

6 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, 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.

7 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

8 Percent Internal Diameter of Conduit or Tubing39 TABLE 7 - 4 Maximum Allowable Diameter (in Inches) 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

9 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. mm, Sq. in.

10 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