Conduit & Trunking Capacity Chart

1 Conduit & Trunking Capacity ChartCABLE SPACING FACTORSTo determing the Conduit size needed, multiply the quantities of each size of cable by the appropriate factor, compare the total with the Conduit figures What size of Conduit is required for 6 No. 4mm cables in a three metre run with no bends? 6 x 58 = 348 So the nearest size of coduti with a factor greater than 348 is FACTORSC onduit Diameter (mm) Capacity Factor162902046025800321400 cable FACTORS single core PVC insulated cablesin straight runs of Conduit not exceeding 3m in lengthType of ConductorConductor cross- sectional area (mm ) FACTORS single core PVC insulated cablesin straight runs of Conduit exceeding 3m in length ORin runs of any length incorporating bends or setsType of ConductorConductor cross- sectional area (mm )

2 FactorSolid or CAPACITIES OF TRUNKINGTo determine the Trunking size needed, multiply the quantities of each cable by the appropriate factor, and compare the total with the Trunking Capacity figures (No. of Cables) 10 x 95 (Factor for 35mm cable ) = 950 The nearest size of standard Trunking with a Capacity factor greater than is 75 x 50mm?(No. of Cables) 16 x (Factor for 4mm cable ) = cable Factor = Trunking cable FACTORSN ominal Conductor size mm stranded4610162535507095 Factor copper or Trunking Capacity FACTORST runk SizeCapacity FactorTrunk Size2 Capacity Factor350mm x 50mm1037150mm x 75mm474375mm x 50mm1555150mm x 100mm639475mm x 75mm2371150mm x 150mm9697100mm x 50mm2091200mm x 100mm8572100mm x 75mm3189225mm x 150mm14652100mm x 100mm4252300mm x 150mm19607 What size of standard Trunking is needed for 10 innumber 35mm cables and 16 in number 4mm cables?

3 cable SPACING FACTORSTo determing the Conduit size needed, multiply the quantities of each size of cable by the appropriate factor, compare the total with the Conduit figures What size of Conduit is required for 6 No. 4mm cables in a three metre run with no bends? 6 x 58 = 348 So the nearest size of coduti with a factor greater than 348 is FACTORSC onduit Diameter (mm) Capacity Factor162902046025800321400 cable FACTORS single core PVC insulated cablesin straight runs of Conduit not exceeding 3m in lengthType of ConductorConductor cross- sectional area (mm ) FACTORS single core PVC insulated cablesin straight runs of Conduit exceeding 3m in length ORin runs of any length incorporating bends or setsType of ConductorConductor cross- sectional area (mm )

4 FactorSolid or CAPACITIES OF TRUNKINGTo determine the Trunking size needed, multiply the quantities of each cable by the appropriate factor, and compare the total with the Trunking Capacity figures (No. of Cables) 10 x 95 (Factor for 35mm cable ) = 950 The nearest size of standard Trunking with a Capacity factor greater than is 75 x 50mm?(No. of Cables) 16 x (Factor for 4mm cable ) = cable Factor = Trunking cable FACTORSN ominal Conductor size mm stranded4610162535507095 Factor copper or Trunking Capacity FACTORST runk SizeCapacity FactorTrunk Size2 Capacity Factor350mm x 50mm1037150mm x 75mm474375mm x 50mm1555150mm x 100mm639475mm x 75mm2371150mm x 150mm9697100mm x 50mm2091200mm x 100mm8572100mm x 75mm3189225mm x 150mm14652100mm x 100mm4252300mm x 150mm19607 What size of standard Trunking is needed for 10 innumber 35mm cables and 16 in number 4mm cables?

5 Conduit Capacity FACTORS (EXCEEDING 3M IN LENGTH) - - - - - - - - - - - - - - - 167270487857143233422750111182333600- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Conduit DIAMETER (MM)STRAIGHTONE BENDTWO BENDSTHREE BENDSFOUR BENDS