Updated the conduit sizing, feels close, but still off.
This commit is contained in:
Jeff MacKinnon
parent
9c8521763c
commit
3597d841c4
2 changed files with 269 additions and 70 deletions
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@ -122,6 +122,177 @@ cec24table4 = [
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['2000', 470, 560, 630]
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['2000', 470, 560, 630]
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]
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]
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# Table 6A Dimensions of single Class B R90XLPE, RW75XLPE, RW90XLPE and RPV90 unjacketed 600V insulated conductors for calculating conduit and tubing fill
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# Only using the conductor characteristics columns, the area will be calculated in the functions. Only stranded.
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cec24table6A = [
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['size', 'diameter'],
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['14', 3.36],
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['12', 3.84],
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['10', 4.47],
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['8', 5.99],
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['6', 6.95],
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['4', 8.17],
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['3', 8.88],
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['2', 9.7],
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['1', 11.23],
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['1/0', 12.27],
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['2/0', 13.44],
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['3/0', 14.74],
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['4/0', 16.21],
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['250', 17.9],
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['300', 19.3],
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['350', 20.53],
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['400', 21.79],
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['450', 22.91],
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['500', 23.95],
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['600', 26.74],
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['700', 28.55],
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['750', 29.41],
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['800', 30.25],
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['900', 31.85],
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['1000', 33.32],
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['1250', 37.56],
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['1500', 40.68],
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['1750', 43.58],
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['2000', 46.27]
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]
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# Table 6B Dimensions of single Class B R90XLPE, RW75XLPE, RW90XLPE and RPV90 unjacketed 1000V insulated conductors for calculating conduit and tubing fill
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# Only using the conductor characteristics columns, the area will be calculated in the functions. Only stranded.
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cec24table6B = [
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['size', 'diameter'],
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['14', 4.12],
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['12', 4.6],
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['10', 5.23],
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['8', 5.99], # This is the same as the 600V in Table 6A
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['6', 7.71],
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['4', 8.93],
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['3', 9.64],
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['2', 10.46],
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['1', 12.49],
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['1/0', 13.53],
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['2/0', 14.7],
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['3/0', 16],
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['4/0', 17.47],
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['250', 19.17],
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['300', 20.56],
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['350', 21.79],
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['400', 23.05],
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['450', 24.17],
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['500', 25.21],
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['600', 27.24],
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['700', 29.05],
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['750', 29.91],
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['800', 30.75],
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['900', 32.35],
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['1000', 33.82],
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['1250', 38.32],
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['1500', 41.44],
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['1750', 44.34],
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['2000', 47.03]
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]
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# Table 6C Dimensions of single Class B R90XLPE, RW75XLPE, R90EP, RW90XLPE, RW90EP, and RPV90 jacketed 600V insulated conductors for calculating conduit and tubing fill
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# Only using the conductor characteristics columns, the area will be calculated in the functions. Only stranded.
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cec24table6C = [
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['size', 'diameter'],
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['14', 4.12],
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['12', 4.6],
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['10', 5.23],
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['8', 6.75],
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['6', 8.47],
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['4', 9.69],
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['3', 10.4],
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['2', 11.22],
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['1', 13.51],
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['1/0', 14.55],
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['2/0', 15.72],
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['3/0', 17.02],
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['4/0', 18.49],
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['250', 21.21],
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['300', 22.6],
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['350', 23.83],
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['400', 25.09],
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['450', 26.21],
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['500', 27.25],
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['600', 30.04],
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['700', 31.85],
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['750', 32.71],
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['800', 33.55],
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['900', 35.15],
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['1000', 36.62],
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['1250', 42.38],
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['1500', 45.5],
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['1750', 48.4],
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['2000', 51.09]
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]
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# TODO - Add tables 6D thru 6K
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# Table 9A/B Internal diameter and cross-sectional areas of various trade conduit and tubing
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# Only using the internal diameter (ID) for each of these conduits, along with the trade size. This will be used to calculate the area and fill for the various limits per Table 8
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'''
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rmc = rigid metal conduit
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fmc = flexible metal conduit
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rpvc = rigid PVC
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db2 = rigid Type EB1 PVC and rigid type DB2/ES2 PVC conduit
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mlt = metallic liquid tight, flexible conduit
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nmlt = non-metallic liquid tight conduit
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emt = electrical metallic tubing
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ent = electrical non-metallic tubing
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rtrcips = rigid RTRC conduit marked IPS
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rtrcid = rigid RTRC conduit marked ID
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sch40 = HDPE conduit schedule 40
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sch80 = HDPE conduit schedule 80
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dr9 = HDPE DR9 conduit
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dr11 = HDPE DR11 conduit
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dr13 = HDPE DR13.5 conduit
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dr15 = HDPE DR15.5 conduit
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'''
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cec24table9AB = [
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['size','RMC', 'FMC', 'RPVC', 'DB2', 'LTMC', 'LTNMC','EMT', 'ENT', 'RTRCIPS', 'RTRCID', 'SCH40', 'SCH80', 'DR9','DR11', 'DR13', 'DR15'],
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['16', 16.05, 15.88, 14.57, None, 15.8, 15.49, 15.4, 14.58, 17.27, 11.94, 14.67, 12.75, 15.47, 16.3, 17.02, 17.43],
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['21', 21.23, 20.62, 19.77, None, 20.83, 20.45, 20.5, 19.66, 22.61, 18.29, 19.78, 17.7, 19.65, 20.73, 21.63, 22.14],
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['27', 27.0, 25.4, 25.4, None, 26.44, 25.91, 26.2, 25.37, 29.34, 24.64, 25.4, 23.06, 24.86, 26.21, 27.33, 27.97],
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['35', 35.41, 31.75, 31.75, None, 35.05, 34.54, 34.6, 33.73, 38.1, 30.99, 33.82, 31.1, 31.51, 33.31, 34.73, 35.54],
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['41', 41.25, 38.1, 38.1, None, 40.01, 40.01, 40.5, 39.57, 44.2, 37.34, 39.63, 36.63, 36.1, 38.27, 39.93, 40.85],
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['53', 52.91, 50.8, 50.8, 50.8, 51.31, 51.69, 52.1, 51.18, 56.26, 50.29, 51.18, 47.82, 45.19, 47.91, 50.18, 51.4],
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['63', 63.22, 63.5, 61.3, None, 62.99, None, 69.4, None, 69.6, 63, 61.13, 56.97, 54.63, 57.92, 60.68, 62.24],
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['78', 78.49, 76.2, 76.2, 76.2, 77.98, None, 85.2, None, 84.84, 75.69, 76.14, 71.38, 66.56, 70.6, 73.95, 75.85],
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['91', 90.68, 88.9, 88.4, 88.4, 88.9, None, 97.4, None, None, 88.39, None, None, None, None, None, None],
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['103', 102.87, 101.6, 100.1, 100.1, 101.6, None, 110, None, 109.72, 101.09, 100.26, 94.56, 85.36, 90.52, 94.83, 97.29],
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['129', 128.85, None, 125.85, 126.35, None, None, 128.9, None, 136.14, 126.24, 125.91, 119.25, 105.54, 111.93, 117.25, 120.29],
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['155', 154.76, None, 149.75, 149.75, None, None, 154.8, None, 162.05, None, 151.5, 142.86, 125.63, 133.22, 139.57, 143.19],
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['200', None, None, 199.39, None, None, None, None, None, None, None, 199.64, None, 163.58, 173.49, 181.74, 186.43],
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]
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# Table 10D Dimensions of DLO cable for calculating conduit and tubing fill
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cec24table10D = [
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['size', 'diameter'],
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['14', 5.59],
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['12', 6.1],
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['10', 6.86],
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['8', 8.38],
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['6', 10.41],
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['4', 11.68],
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['3', 12.45],
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['2', 13.21],
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['1', 16.51],
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['1/0', 17.53],
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['2/0', 18.29],
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['3/0', 20.57],
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['4/0', 22.10],
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['262', 25.4],
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['313', 26.92],
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['373', 27.94],
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['444', 31.24],
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['535', 34.04],
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['646', 36.83],
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['777', 38.1],
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['929', 40.89],
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['1111', 44.45]
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]
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# Appendix Tables
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# Appendix Tables
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cec24tableD3 = [
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cec24tableD3 = [
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@ -309,14 +309,37 @@ def conductor_ampacity(conductor, temp = 75, material = 'cu', code = 'CEC', race
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## This doesn't work yet, but its getting
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## This doesn't work yet, but its getting
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def conduit_size(num_cc,cc_con,bond,material='SCH80'):
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def conduit_size(num_cc,cc_con,bond,insulation="RW90", voltage = 1000, jacketed = False,material='SCH80', code = 'CEC'):
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'''
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Calculated the necessary conduit size for the circuit using code tables.
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num_cc = The number of current carrying conductors, including neutral.
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cc_con = The current carrying conductor size
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bond = The bond size
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insulation = The insulation class of the conductors.
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voltage = The voltage rating of the insulation, typically 600 or 1000 [V].
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jacketed = Whether or not the conductor is jacketed, typically this is false.
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material = The material of the conduit. The default is SCH80 as it is the "worse case" in most configurations as it has a high difference from trade size to inner diameter.
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code = CEC or NEC, although NEC is lagging in the development front at the moment, so stick with CEC.
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# Calculate fill requirements based on Table 8
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The calculation is completed in the following steps:
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1. Check to make sure the variables are valid.
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2. Determine the percent fill limitation based on the number of current carrying conductors.
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3. Look up the outer diameter of the conductors and bond. Calculate the total area.
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4. Look up the trade size conduit, of the correct material, that meets the requirements.
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5. Return the trade size, inner diameter and "result name".
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'''
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valid_insulation = ['R90',
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'RW90',
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'RPV90',
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'RW75'
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]
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valid_voltage = [600,1000]
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valid_material = ['RMC', # Rigid Metal Conduit
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valid_material = ['RMC', # Rigid Metal Conduit
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'FMC', # Flexible Metal Conduit
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'FMC', # Flexible Metal Conduit
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'RPVC', # Rigid PVC
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'RPVC', # Rigid PVC
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'EB1', # Type EB1
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'DB2', # Type DB2
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'DB2', # Type DB2
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'LTMC', # Liquid Tight Metal Conduit
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'LTMC', # Liquid Tight Metal Conduit
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'LTNMC', # Liquid Tight non-metallic conduit
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'LTNMC', # Liquid Tight non-metallic conduit
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@ -324,20 +347,35 @@ def conduit_size(num_cc,cc_con,bond,material='SCH80'):
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'ENT', # electrical non-metallic tubing
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'ENT', # electrical non-metallic tubing
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'SCH40', # HDPE Schedule 40
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'SCH40', # HDPE Schedule 40
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'SCH80', # HDPE Schedule 80
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'SCH80', # HDPE Schedule 80
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#'DR9', # HDPE DR9
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'DR9', # HDPE DR9
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#'DR11', # HDPE DR11
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'DR11', # HDPE DR11
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#'DR135', # HDPE DR13.5
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'DR13', # HDPE DR13.5
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#'DR155' # HDPE DR15.5
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'DR15' # HDPE DR15.5
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]
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valid_code = ['CEC',
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# 'NEC' - NEC isn't completed yet.
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]
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]
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if insulation not in valid_insulation:
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return print(insulation + " is not valid.")
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if voltage not in valid_voltage:
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return print(voltage + " is not valid.")
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if material not in valid_material:
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if material not in valid_material:
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return print(material + " is not a valid material. I should be 'al' or 'cu'.")
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return print(material + " is not a valid material. It should be in " + valid_material)
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if code not in valid_code:
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return print(code + " is not valid.")
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cc_con = str(cc_con)
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bond = str(bond)
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#
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# Determine the maximum conduit fill
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#
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import numpy as np
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import numpy as np
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x = np.array(valid_material)
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db_result_index = np.where(x == material)[0][0]
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if num_cc == 1:
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if num_cc == 1:
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percent_fill = 0.53
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percent_fill = 0.53
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@ -346,79 +384,69 @@ def conduit_size(num_cc,cc_con,bond,material='SCH80'):
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else:
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else:
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percent_fill = 0.4
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percent_fill = 0.4
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# Wire Size and diameter
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#
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# Find the conductor area
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#
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wire_size = [
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# This will be modified/added to when all the Table 6's are added. Currently there are only A-C,
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# ['tradesize',area mm^2]
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if jacketed == True:
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['14',2.08],
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table6 = cec24table6C
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['12',3.31],
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elif voltage == 600:
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['10',5.26],
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table6 = cec24table6A
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['8',8.37],
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elif voltage == 1000:
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['6',13.3],
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table6 = cec24table6B
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['4',21.2],
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else:
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['3',26.7],
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return print("error")
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['2',33.6],
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['1',42.4],
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['1/0',53.5],
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['2/0',67.4],
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['3/0',85],
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['4/0',107],
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['250',127],
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['300',152],
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['350',177],
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['400',203],
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['500',253],
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['600',304],
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['700',355],
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['800',405],
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['900',456],
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['1000',507],
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['1250',633],
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['1500',760],
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['1750',887],
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['2000',1010]
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]
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# Calculate the area of current carrying conductors
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table6headers = table6[0]
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table6rows = table6[1:]
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conductor_diameter = pd.DataFrame(table6rows,columns= table6headers)
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#print(conductor_diameter)
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x = np.array(wire_size)
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cc_dia = conductor_diameter.loc[(conductor_diameter['size'] == cc_con) ]['diameter'].iloc[0]
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row = np.where(x == cc_con)[0][0]
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print(cc_dia)
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current_carrying_conductor_area = wire_size[row][1]
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bond_dia = conductor_diameter.loc[(conductor_diameter['size'] == bond) ]['diameter'].iloc[0]
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cc_area = current_carrying_conductor_area * num_cc
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# Bond Area
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print(bond_dia)
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row = np.where(x == bond)[0][0]
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cc_area = math.pi * (cc_dia/2) ** 2
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bond_area = wire_size[row][1]
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print(cc_area)
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bond_area = math.pi * (bond_dia/2) ** 2
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print(bond_area)
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# Total conductor area
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# Total conductor area
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area_conductors = cc_area + bond_area
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area_conductors = num_cc * cc_area + bond_area
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#print(area_conductors)
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print(area_conductors)
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min_trade_area = area_conductors / percent_fill # The minimum area of the conduit
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min_trade_area = area_conductors / percent_fill # The minimum area of the conduit
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#print(min_trade_area)
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print(min_trade_area)
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trade_inner_dia = math.sqrt(min_trade_area/math.pi) * 2
|
||||||
parameter = ' WHERE ' + material + ' > ' + str(min_trade_area)
|
print(trade_inner_dia)
|
||||||
|
|
||||||
try:
|
|
||||||
with sqlite3.connect("jepl-cec21.db") as con:
|
|
||||||
cur = con.cursor()
|
|
||||||
cur.execute('SELECT "Trade Size" from "Table9"'+ parameter )
|
|
||||||
table = cur.fetchone()
|
|
||||||
conduit = table
|
|
||||||
|
|
||||||
except sqlite3.OperationalError as e:
|
|
||||||
print(e)
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
result_raw = conduit[0]
|
#
|
||||||
result_name = str(conduit[0]) + 'mm ' + material
|
# Select the conduit trade size
|
||||||
|
#
|
||||||
|
|
||||||
|
conduit_table = pd.DataFrame(cec24table9AB[1:], columns=cec24table9AB[0])
|
||||||
|
#print(conduit_table)
|
||||||
|
|
||||||
|
# Calculate the absolute difference for all values and find the index of the minimum difference
|
||||||
|
sectioned_df = conduit_table.loc[conduit_table[material] >= trade_inner_dia,material]
|
||||||
|
closest_index = sectioned_df.idxmin()
|
||||||
|
|
||||||
|
# Retrieve the nearest value using the found index
|
||||||
|
result_raw = conduit_table['size'].iloc[closest_index]
|
||||||
|
result_name = result_raw + 'mm ' + material
|
||||||
|
result_inner_dia = conduit_table[material].iloc[closest_index]
|
||||||
|
|
||||||
|
|
||||||
return result_raw,result_name
|
return result_raw,result_name,result_inner_dia
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Add table
Reference in a new issue