Table of Contents
Foreword
Scope
History
Section1-GENERALINFORMATION
1.1Background
1.2References
1.2.1NormativeReferences
1.2.2OtherReferences
1.3DEFINITIONS
Section2-TABLEDEVELOPMENTPARAMETERS
2.1ParametersUsedtoDevelopTrayAmpacityTables
2.1.1CableOperatingTemperatures
2.1.2AllowableHeatGeneration
2.1.3CalculatedDepthofCablesinTrays-Apparent
FillDepth
2.1.4CableDiameters
2.1.5ConductorResistance
2.1.6CalculatedFree-AirAmpacity
2.1.7AmpacityValues
Section3-AMPACITYADJUSTMENTFACTORS
3.1CorrectionFactorforDiametersofCables
3.2CorrectionFactorforTemperatures
3.2.1AmbientTemperature
3.2.2ConductorTemperature
3.3CorrectionFactorforNumberofConductors
3.4CorrectionFactorsforTrayCovers
3.5CorrectionFactorsforLoadDiversity
3.5.1DeterminingtheLoadingFactor
3.5.2DiversityFactors
Section4-EXAMPLES
4.1CalculatingApparentDepthofCable
4.2SelectingAmpacityValuesandUsingAdjustmentFactors
4.3CalculatingandApplyingDiversityFactors
4.4MultipleAdjustmentFactors
4.5CalculatingAmpacitiesforCablesNotCoveredbyTables
Section5-TABLES
5.1IndextoTables Abstract
Describes the ampacity ratings for 600-15,000 volt solid dielectric cables installed in cable trays. Ampacity ratings are tabulated for single conductor cables, triplexed assemblies of single conductor cables, and three-conductor cables incorporating an overall jacket.
