Today's Message Index:
----------------------
1. 02:39 PM - Figure Z-16 Question (Dan Billingsley)
2. 06:45 PM - Re: Figure Z-16 Question (Bob McCallum)
3. 07:29 PM - Re: Figure Z-16 Question (Dan Billingsley)
Message 1
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| Subject: | Figure Z-16 Question |
I am involved in the wiring of a 912s. I have all the parts as specified for the
books Z-16 schematic. Now looking closer, a question came to mind concerning the
wire path between the S1 and the main power bus...What is the need of changing
up the wire size from 22AWG to 18AWG and then into the 22 AWG fuseable link?
Will it not work using 18 AWG from the switch into the fuse link and then to the
bus? confused
Thanks
Dan
Message 2
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| Subject: | Figure Z-16 Question |
Dan;
Yes it will work, but---
The 22ga fuse link protects the 18ga wire should it short to ground . The 5A
breaker protects the 22ga wire feeding the alternator relay if or when the
overvoltage protection shorts it to ground. 22ga is sufficient to carry the
max 5A current permitted by the breaker. 22ga is not safe for the whole
distance in the specific case of a ground short between the buss and the
master switch (S1). The 18ga will carry the short circuit currents long
enough for the fusible link to melt without itself overheating. The 5A
breaker is a critical component in the functioning of the overvoltage
protection. It's not clear in your description if you meant to leave out
this breaker.
Bob McC
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-
> server@matronics.com] On Behalf Of Dan Billingsley
> Sent: Sunday, October 31, 2010 5:35 PM
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Figure Z-16 Question
>
> <dan@azshowersolutions.com>
>
> I am involved in the wiring of a 912s. I have all the parts as specified
for the
> books Z-16 schematic. Now looking closer, a question came to mind
concerning the
> wire path between the S1 and the main power bus...What is the need of
changing
> up the wire size from 22AWG to 18AWG and then into the 22 AWG fuseable
link?
> Will it not work using 18 AWG from the switch into the fuse link and then
to the
> bus? confused
> Thanks
> Dan
>
> _-
> ====================================================
> ======
> _-
> ====================================================
> ======
> _-
> ====================================================
> ======
> _-
> ====================================================
> ======
>
>
Message 3
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| Subject: | Re: Figure Z-16 Question |
Thanks Bob,
That cleared it up...With all the digging, researching and head scratching, I
didn't know that was a breaker. I even looked back thru the book the other day
trying to find it. I did it again just now and found it was in a very small
picture at the front. Duh How many orders to B&C as well as Spruce does it
take to have stock in the shipping industry? This is me leaving to order a
breaker <g>.
Dan
----- Original Message ----
From: Bob McCallum <robert.mccallum2@sympatico.ca>
Sent: Sun, October 31, 2010 6:40:19 PM
Subject: RE: AeroElectric-List: Figure Z-16 Question
<robert.mccallum2@sympatico.ca>
Dan;
Yes it will work, but---
The 22ga fuse link protects the 18ga wire should it short to ground . The 5A
breaker protects the 22ga wire feeding the alternator relay if or when the
overvoltage protection shorts it to ground. 22ga is sufficient to carry the
max 5A current permitted by the breaker. 22ga is not safe for the whole
distance in the specific case of a ground short between the buss and the
master switch (S1). The 18ga will carry the short circuit currents long
enough for the fusible link to melt without itself overheating. The 5A
breaker is a critical component in the functioning of the overvoltage
protection. It's not clear in your description if you meant to leave out
this breaker.
Bob McC
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-
> server@matronics.com] On Behalf Of Dan Billingsley
> Sent: Sunday, October 31, 2010 5:35 PM
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Figure Z-16 Question
>
> <dan@azshowersolutions.com>
>
> I am involved in the wiring of a 912s. I have all the parts as specified
for the
> books Z-16 schematic. Now looking closer, a question came to mind
concerning the
> wire path between the S1 and the main power bus...What is the need of
changing
> up the wire size from 22AWG to 18AWG and then into the 22 AWG fuseable
link?
> Will it not work using 18 AWG from the switch into the fuse link and then
to the
> bus? confused
> Thanks
> Dan
>
> _-
> ====================================================
> ======
> _-
> ====================================================
> ======
> _-
> ====================================================
> ======
> _-
> ====================================================
> ======
>
>
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