1979-1993 & 94 Conv [Subscribe to Daily Digest] |
![]() | [Main C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: metric wires sizes -> US wire gauges? Posted by Ari [Email] ![]() ![]() In Reply to: metric wires sizes -> US wire gauges?, Bruce, Thu, 10 May 2001 12:36:20 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I work with a table that has AWG / B&S wire gauge to mm^2. I'll give you the AWG / B&S wire size, and then the mm^2
AWG / B&S mm^2
20 ga 0.5
18 ga 0.82
17 ga 1.0
16 ga 1.3
14 ga 2.0
12 ga 3.3
10 ga 5.6
8 ga 8.3
If you want to calculate it, think of it this way - an 18 gauge wire is 1 mm in diameter (1.024, to be exact). For every two gauge sizes down, the wire increases by 25%. So if an 18 ga wire is 1 mm in diameter, a 16 gauge wire is 1.25 x 1.024 = 1.28 mm dia, and a 14 gauge wire is 1.25 x 1.25 x 1.024 = 1.6 mm, and so on.
Now, the cross-sectional area of a circle is pi times the radius squared. The radius is half the diameter, so the cross sectional area is the diameter squared times pi, divided by 4, or diameter squared times 0.785
So that 14 gauge wire is 1.6 mm, which is (1.6)^2 x .785 = 2.01 mm^2.
That's the technical answer. The best answer is to go by what Richard said - check the wire, and go a little fatter.
For wire thinner than 18 gauge, divide by 1.25 for every two gauge sizes smaller (higher number).
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
![]() |
![]() |
![]() |
![]() |
![]() |