Date: Sun, 24 Jan 1999 18:25:42 -0800
Reply-To: harald_nancy <harald_nancy@EARTHLINK.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: harald_nancy <harald_nancy@EARTHLINK.NET>
Subject: Auxilliary battery relays and wires
Content-Type: text/plain; charset=ISO-8859-1
Darrell,
In the Bentley I have 1980-91 on page 97.4 how to
read wiring diagrams.
It says on the left towards the top with the line pointing
to a sample:
Wire size/color
American Wire Gauge (awg) as shown, or
metric cross -section. Example:
1.5 (mm);
color code correspond to wire colors in vehicle.
So my interpretation of this mystery is:
sometimes a diagram will show the standard american Gauge.
Like 4, 6, 12, 14, etc.
As the number is smaller, the wire is bigger.
A 16 is puny compared to a 6 gauge.
But on most diagrams in the Bentley the numbers are things like
0.5 and 2.5 and the the big one a 6.0
Those are the millimeter cross section of the wires.
If the number is bigger, the wire is also bigger.
I guess one could measure the metric ( the core ),
then match that to the standard american gauge.
On a package of wire that I have here, it shows that
16 Gauge is equivalent to 1.0 mm.
Perhaps someone can come up with a chart.
Harald
90 westy
Darrell wrote:
> > Hi Harold,
> Thanks for the enlightenment about the relays. One more big problem I
> have is in my bentley on page 97.4 (how to read diagrams) and 97.5
(Symbols
> used in wiring diagrams) it states that the numbers on the wires are in
AWG
> or american wire gauge. I feel this is true until about 85 wiring
diagrams
> then they switch to some system that I am not familiar with. I realize
many
> bentleys are different, probably as many different bentleys as there are
> versions of the other bible. I think I understand AWG sizes but I am one
of
> the old farts on the list and maybe missed something in the last 10 years
> that changed in the AWG sizes. I see wire sizes listed as 6.0 and fused
with
> a 50 amp fuse and 0.5 fused with a 10 amp. There are battery ground
straps
> at 25 and battery to starter straps that are 70.
> In the old days 10 awg was 30 amp max 12 was 20, 14 was 15. If you
> understand the new awg system bentley switched to in about 85 please
> enlighten me again. tia
> Darrell
> -----Original Message-----
> From: harald_nancy <harald_nancy@EARTHLINK.NET>
> To: vanagon@GERRY.VANAGON.COM <vanagon@GERRY.VANAGON.COM>
> Date: Saturday, January 23, 1999 10:45 PM
> Subject: Re: Isolator, where to put it?
>
>
> >Greetings,
> >With regard to relays in "campers":
> >"3-way refrigerator relay":
> >The 2 vanagon full westfalia campers ('81 and '90)
> >that I have owned only had the little "refrigerator relay",
> >as shown on page 97.33b in Bentley.
> >That relay (called 12 volt refrig./heater relay) is mounted
> >under the driver's seat.
> >In my opinion, that relay is not intended by VW to
> >also run an aux. battery in addition to the refrig.heating element
> >(which actually can draw quite a bit), even though
> >it is mounted in that empty battery box.
> >
> >"Auxillary battery relay'':
> >The "auxillary battery relays" mentioned in the Bentley:
> >(In my Bentley, they are on pg.97.34a, pg.97.222, and pg. 97.225.)
> >These relays are intended for a second battery, and are
> >designed adequately by the german engineers for that purpose.
> >The point is that those relays are different from what we have in the
> >full westfalia camper with the 3-way refrigerator.
> >
> >The 2-battery setup with that stronger relay is what VW
> >used on the "weekender camper", that has only an
> >electrically powered refrigerator.
> >Those vanagons probably were delivered with 2 batteries in place.
> >
> >If someone wants to convert their westfalia full camper to
> >a dual battery setup with a relay, they could go to the dealer
> >and purchase that stronger relay that is shown with the dual battery
setup.
> >And then install the bigger size wire, and perhaps install
> >an additional 30 or 40 amp fuse, and that setup should be ok.
> >
> >In summary, all that I am saying is that the "refrigerator 12 volt
> >heater relay" for the 3 way frig. is not the same part (and not as
strong)
> >as the dual battery relay used for the weekender package electric only
> >refrigerator.
> >
> >Harald
> >'90 full camper westy
> >
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