Wire Gauge Required Question
For some reason I just can't understand the various wire gauge tables, and I have tried to, so I am hoping somebody will take pity and do all the work! :) One table that I can follow says that for...
Forum Discussion
an interesting and useful tidbit on AWG wire and an answer to BFL's question relating wire size to resistance.
AWG wire step sizes aren't at all arbitrary. the wire step sizes are logarithmic for resistance. So it is actually pretty easy to determine what wire size I need to change to if I know how much I want resistance to change. To cut wire resistance roughly in half for a given length, go down by 3 AWG wire sizes. To double wire resistance, go up by 3 AWG wire sizes.
to cut wire resistance by a factor of 10, go down 10 AWG gages. example. #12 has 10x the resistance in ohms/ft as #2, and 1/10 the resistance/foot as #22.
and since wire sizes are often available in steps of 2, each step of two is a increase/decrease in resistance by about 30%. #12 has about 30% lower resistance/foot than #14
AWG wire step sizes aren't at all arbitrary. the wire step sizes are logarithmic for resistance. So it is actually pretty easy to determine what wire size I need to change to if I know how much I want resistance to change. To cut wire resistance roughly in half for a given length, go down by 3 AWG wire sizes. To double wire resistance, go up by 3 AWG wire sizes.
to cut wire resistance by a factor of 10, go down 10 AWG gages. example. #12 has 10x the resistance in ohms/ft as #2, and 1/10 the resistance/foot as #22.
and since wire sizes are often available in steps of 2, each step of two is a increase/decrease in resistance by about 30%. #12 has about 30% lower resistance/foot than #14
