Transcription of Wire Gauge and Current Limits - calbugs.com
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Wire Gauge and Current Limits AWG Gauge Diameter Inches Diameter mm Ohms per 1000 ft Ohms per km Maximum amps for chassis wiring Maximum amps for power transmission OOOO 380 302 OOO 328 239 OO 283 190 0 245 150 1 211 119 2 181 94 3 158 75 4 135 60 5 118 47 6 101 37 7 89 30 8 73 24 9 64 19 10 55 15 11 47 12 12 41 13 35 14 32 15 28 16 22 17 19 18 16 19 14 20 11 21 9 22 7 23 24 25 26 27 28 29 30 31 32 Metric 33 Metric 34 Metric 35 329 Metric.
The following chart is a guideline of ampacity or copper wire current carrying capacity following the Handbook of Electronic Tables and Formulas for American Wire Gauge. As you might guess, the rated ampacities are just a rule of thumb. In careful engineering the insulation temperature limit, thickness, thermal conductivity, and air convection and
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