Wire gauge for copper wire |
Nicole immediately launched into a basic discussion of the diameter of copper wires:
"Copper wires are categorized by their American Wire Gauge, or AWG, size. A wire's AWG size enjoys an inverse relationship with its diameter; the lower the AWG, the thicker the wire and the heavier the current load it is able to carry."That's pretty much correct, and probably a near-perfect rewording of the wikipedia entry... we didn't look. While we found the creativity of "enjoys an inverse relationship" rather amusing, we had to wonder if anyone (and we do mean anyone) at eHow realized that "AWG size" is every bit as redundant as "PIN number" or "ATM machine." We doubt it...
Whatever the case, Scmoll goes on to instruct her readers to read the diameter of a wire's AWG from a gauge table. If you don't have a gauge table handy, Nicole advises you to:"Remember that copper wire diameters increase and decrease by a factor of two every six gauges, three every 10 gauges, 10 every 20 gauges and 100 for every 40 gauges...."...which, although a reasonable approximation, is quite clumsy. We note that Nicole fails to provide the formula for (approximate) diameter based on wire gauge, which (for inches) is |
D = 0.005 * 92^((36-AWG)/39)
In that case, we'd want a tool called a "wire gauge" to measure the wire -- see above. Just stick the end of your mystery wire into a hole; if it's loose try the next smaller hole, etc. But Schmoll never mentioned this simple solution, preferring instead to hit her laptop with a bullshit stick. Well, that dog don't hunt, Nicole, and that's why you're our Dumbass of the Day. Enjoy!
¹ The original has been deleted by Leaf Group, but can still be accessed using the Wayback machine at archive.org. Its URL was ehow.com/how_7840505_diameter-copper-wire.html
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