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National Electrical Code Allowable Ampacities of …
National Electrical CodeAllowable Ampacities of Insulated Conductors Rated 0-2000 VoltsAs Excerpted from the 2002 National Electrical CodeAmpacities of Not More Than Three Current-Carrying Conductors in Raceway, Cable or Earth. Based onAmpbient Temperature of 30 C (86 F)Copper ConductorsAluminum Conductors Temperature Rating of ConductorTemperature Rating of ConductorSIZE60 C75 C90 C60 C75 C90 CSIZEAWGTYPESTYPESTYPESTYPESTYPESTYPESAW GORRHH THHWRHH THHWORTWRHW THHWRHW-2 THWN-2 TWRHW THHWRHW-2 THWN-2kcmilUFTHW XHHWXHHW THW-2 UFTHWXHHWXHHWTHW-2kcmilTHWN USEXHHW-2 THHNTHWN USEXHHW-2 THHNXHH USE-2 XHH USE-2 14**202025---- 12**252530202025 12** 10**303540253035 10**8405055304045865565754050606470 85* 95*5565754385 100* 110*6575853295 115* 130*75 90* 100*21110 130* 150*85 100* 115*11/0125 150* 170*100 120* 135*1/02/0145 175* 195*115 135* 150*2/03/0165 200* 225*130 155* 175*3/04/0195 230* 260*150 180* 205*4/0250215 255* 290*170 205* 230*250300240285320190 230* 255*300350260 310* 350*210 250* 280*350400280 335* 380*225270305400500320380430260 310* 350*500600355420475285 340*
As Excerpted from the 2002 National Electrical Code: Ampacities of Not More Than Three Current-Carrying Conductors in Raceway, Cable or Earth. Based on
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