---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 09/02/21: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:01 AM - Possible Z-14 error?? (Voyager) ________________________________ Message 1 _____________________________________ Time: 08:01:36 AM PST US Subject: AeroElectric-List: Possible Z-14 error?? From: "Voyager" Hi Bob, I am looking at wiring my RANS S-21 based to a large degree on your Z-14 architecture. As I am reviewing it and creating my schematics in SolidWorks, I noticed something odd. I am looking at what I believe is the latest revision (dated 24-Jun-2013). On P1, the wire from the cross-feed contactor to the main battery contactor is 2 AWG as compared to 4 AWG from the aux battery contactor to the cross feed. Since both batteries are the same size, it seems these should be the same size conductor unless the lengths are dramatically different. The bigger question I have is why is the conductor on P2 from the main battery contactor to the starter contactor 4 AWG when 2 AWG is used to the starter itself from its contactor? Did the wire sizes from the main battery contactor to starter contactor get transposed with the size from the cross-feed contactor to the main battery contactor? Or is the assumption that the length from the cross-feed contactor to the main battery contactor is long and the length from the main battery contactor to the starter contactor is short? I plan to mount my two batteries side by side with short runs from the batteries to their contactors (hopefully less than 12") and short runs from the battery contactors to the cross-feed contactor, again 12" or less if practical. My batteries will likely be under the baggage compartment floor according to the RANS plans which is not my favorite location, but the firewall is too crowded and I really don't want to run clear back to the tail cone. This means that my cable from the battery contactor to the starter contactor will likely be 6' or more in length and then another 3-4 feet to the starter. Given the above, I am leaning towards 4 AWG for the short runs between batteries and main and cross-feed contactors and then 2 AWG from battery or cross-feed contactor to the starter contactor and 2 AWG from starter contactor to starter. However, this isn't what I see on your architecture diagram hence my question. Although, RANS shows 4 AWG for everything from the battery to the starter so maybe I am being overly conservative. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=503024#503024 ------------------------------------------------------------------------------------- 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.