I got to wondering about this so I dug through some of my reference books and came up with this. Hope it will help those who, like me, are building.
Single strand copper wire at room temperature (about 75 degrees F).
Code:
AWG Amps
10 30
12 20
14 15
16 10
18 5
20 3.3
22 2.1
24 1.3
26 0.8
28 0.5
The above are approximate values (ymmv).
Stranded wire has a higher current rating for a given gage size. The conversion from stranded-to-solid is about
:
Code:
No. of Derating
strands Factor
2-5 0.8
6-15 0.7
16-30 0.5
This means that 20-strand 22 gage wire could carry over 4 amps safely
.
robotic regards,
Tom