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Quick wiring ?
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JMCFAN
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PostPosted: Tue Oct 19, 2021 5:24 pm    Post subject: Quick wiring ? Reply with quote

wiring up the buggy....need to make harness wires for generator... D+ etc.... what gauge wire is recommended/needed...??
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Dale M.
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PostPosted: Tue Oct 19, 2021 6:44 pm    Post subject: Re: Quick wiring ? Reply with quote

B+ to battery from B+ of regulator probably a #8 or #10

For D+ of generator to D+ of regulator a #8 or #10...

For DF from Generator to DF of regulator Probably a #12 or #14

Terminal 61 or regulator it GEN lamp probably a #16....
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"Kellison Sand Piper Roadster" For Street & Show.
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EVfun
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PostPosted: Tue Oct 19, 2021 9:53 pm    Post subject: Re: Quick wiring ? Reply with quote

I bet you just pulled those off the top of your head -- and pretty damn good. The answer the OP seeks is posted in the wiring diagrams posted in the "Technical" section. I grabbed the '67 Bug diagram for a look. Conversion charts for metric wire size to American Wire Gauge are widely available on the web.

B+ to battery and D+ between the generator and regulator is 6.0mm^2, slightly larger than 10 gauge but closer to 10 gauge than 8 gauge. They used the same size with the alternator Bugs so 10 gauge should be fine with the lower current limit of the generator.

DF is, 1.0mm^2, which is between 16 and 18 gauge.

Terminal 61 to the generator lamp is 0.5mm^2, almost exactly 20 gauge.
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Dale M.
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PostPosted: Wed Oct 20, 2021 7:42 am    Post subject: Re: Quick wiring ? Reply with quote

EVfun wrote:
I bet you just pulled those off the top of your head -- and pretty damn good. The answer the OP seeks is posted in the wiring diagrams posted in the "Technical" section. I grabbed the '67 Bug diagram for a look. Conversion charts for metric wire size to American Wire Gauge are widely available on the web.

B+ to battery and D+ between the generator and regulator is 6.0mm^2, slightly larger than 10 gauge but closer to 10 gauge than 8 gauge. They used the same size with the alternator Bugs so 10 gauge should be fine with the lower current limit of the generator.

DF is, 1.0mm^2, which is between 16 and 18 gauge.

Terminal 61 to the generator lamp is 0.5mm^2, almost exactly 20 gauge.


Yeah... after 60 years of doing this stuff you learn a little....

And looked for the metric to AWG chart for the converting the numbers and could no find one, after wasting 20 minuets
I decided to just take a run at it.... Guess the "69" chart I was trying to use lacked the conversion numbers....
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“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.

"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...
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Pajero
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PostPosted: Wed Oct 20, 2021 12:28 pm    Post subject: Re: Quick wiring ? Reply with quote

Quote:
Yeah... after 60 years of doing this stuff you learn a little....

And looked for the metric to AWG chart for the converting the numbers and could no find one, after wasting 20 minuets
I decided to just take a run at it.... Guess the "69" chart I was trying to use lacked the conversion numbers....

Image may have been reduced in size. Click image to view fullscreen.
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Dale M.
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PostPosted: Wed Oct 20, 2021 4:55 pm    Post subject: Re: Quick wiring ? Reply with quote

Pajero wrote:
Quote:
Yeah... after 60 years of doing this stuff you learn a little....

And looked for the metric to AWG chart for the converting the numbers and could no find one, after wasting 20 minuets
I decided to just take a run at it.... Guess the "69" chart I was trying to use lacked the conversion numbers....

Image may have been reduced in size. Click image to view fullscreen.


Thank you!
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.

"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...
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EVfun
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PostPosted: Fri Oct 22, 2021 7:37 pm    Post subject: Re: Quick wiring ? Reply with quote

I have this chart on my garage wall at the workbench. I took a picture of it so I could type it up here. I dropped all the lines above 6 gauge because I do not have current ratings for them -- duty cycle becomes an ever larger part of the limit. For long wires, like from one end of the car to the other, I recommend going up one size on this chart. With a 12 volt system you need to minimize voltage drops.
Code:
AWG  mm^2  mOhm/ft  amps
6    13.3   .395    70
8    8.37   .628    50
10   5.26   .999    35
12   3.31   1.59    25
14   2.08   2.53    16
16   1.31   4.02    10
18   .823   6.39    6
20   .518   10.2    4

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As a general rule, cheap parts are the most expensive parts you can buy.
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