Reading Wire Sizes From Factory Manual

[skipdup]

Can anyone tell me what measuring scale Ze Germans used on their workshop manuals? Below is an example... What wire size is 1,0 or 1,5?

[skipdup]

Here's the example...

[autobonrun]

I assume it's the same as my other maintenance manuals where the number represents the cross sectional area in square millimeters. Why they chose to use a comma rather than a decimal point I don't know.

1,5 would be 1.5 square mm.

0,75 would b 0.75 square mm, etc.

[Dennis Kalma]

Exactly correct, cross section in square millimetres.....much more sensible than this miserable guage stuff....

[skipdup]

Thanks.

So, how do I convert square millimeters to roughly the same gauge equivalent?

I'm obviously not thinking about this right... Must be my public education. L1 & 2 are the left headlight. 1.5 MM seems too small to me.

Thanks,
Skip

[ChrisBennet]

Area equal Pi * radius squared or:
Area = Pi * r^2

So radius = square root of area divided by Pi or
r = sqrt (A / Pi)

Therefore:
"1.5" has a radius of .69mm or a diameter of 1.38mm
"1.0" has a radius of .56mm or a diameter of 1.12mm
"0.75" ...................................diameter of 0.98mm

Maybe someone can convert that to gauge?
-Chris

[Early_S_Man]

The headlamp wires are a bit larger than 16 ga, but smaller than 15 ga ... 1.5 sq. mm vs 1.65 sq. mm ...

Here is an AWG chart:

http://www.tfcbooks.com/referenc/wiresize.htm

[skipdup]

Now I get it. Here's a table that converts from AWG to CSA (Cross Sectional Area - in square millimeters).

Thanks!
Skip

[Early_S_Man]

For future reference ...


AWG Number CSA (mm sq) Capacity (Amps) per the N.E.C.

8 8.35

9 6.62

10 5.27 30.0

11 4.15

12 3.31 20.0

13 2.63

14 2.08 15.0

15 1.65

16 1.31

17 1.04

18 0.823

19 0.653

20 0.519

21 0.412

22 0.325

23 0.259

24 0.205

[Wil Ferch]

Cars would never be able to comply with NEC as to ampacity......as correct as NEC ( National Electric Code) may suggest.

Cars' use will end up with much lighter gauge for the given amp load...a function of cost and weight concerns.

Wil