---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 10/31/10: 3 ---------------------------------------------------------- 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 _____________________________________ Time: 02:39:09 PM PST US From: Dan Billingsley Subject: AeroElectric-List: 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 _____________________________________ Time: 06:45:35 PM PST US From: Bob McCallum Subject: RE: AeroElectric-List: 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 > > > > 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 _____________________________________ Time: 07:29:17 PM PST US From: Dan Billingsley Subject: Re: AeroElectric-List: 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 . Dan ----- Original Message ---- From: Bob McCallum Sent: Sun, October 31, 2010 6:40:19 PM Subject: RE: AeroElectric-List: 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 > > > > 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 > > _- > ==================================================== > ====== > _- > ==================================================== > ====== > _- > ==================================================== > ====== > _- > ==================================================== > ====== > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.