---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 12/19/19: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:10 AM - Re: Switch ratings? (Robert L. Nuckolls, III) 2. 02:11 PM - Re: One battery/two alternators IFR z-diagram (Rick Beebe) 3. 05:24 PM - Re: One battery/two alternators IFR z-diagram (Michael Burbidge) ________________________________ Message 1 _____________________________________ Time: 09:10:41 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Switch ratings? A single feed endurance bus with a switch in the feeder . . . what 'lectro-whizzies run from this bus? Bob . . . ________________________________ Message 2 _____________________________________ Time: 02:11:12 PM PST US Subject: Re: AeroElectric-List: One battery/two alternators IFR z-diagram From: Rick Beebe I'm not sure that's true. I have the same basic setup. Single battery, two alternators and I used Z-12. The PMAGs are self-contained so you don't have an electrically dependent ignition system. I'm using an SB18-14 regulator for the second alternator so both can just stay on. I have a Garmin G-5 as my backup instrument and I installed the battery on it so in the unlikely event of a complete electrical failure I'll have 45 minutes or so to get the plane on the ground. --Rick On 12/18/2019 9:26 PM, Michael Burbidge wrote: > > After doing some reading on the FAQ list, it looks like I should > consider the Z-13/8 with the Z-25 excitation mod, or else the Z-14. I > think I also now understand one of the drawbacks of Z-12 architecture > is if the battery contactor fails, both alternators go offline. > > Michael- > > *From: *"owner-aeroelectric-list-server@matronics.com" > on behalf of Michael > Burbidge > > *Date: *Wednesday, December 18, 2019 at 3:56 PM > *To: *"aeroelectric-list@matronics.com" > *Subject: *AeroElectric-List: One battery/two alternators IFR z-diagram > > Im building an RV-14A. The panel will be IFR capable, Garmin G3X > system. The ignition system will be dual PMAGs. > > Id like to go with a single battery, two alternator system. B&C 60 > Amp and B&C 20 Amp alternators. > > Id prefer the electrical system be as simple as is practical. Z-13/20 > looks to be about what I want, but Ive heard this is no longer a > recommended architecture. (I saw one post that said it had been > excommunicated. ) > > What is there a recommended replacement architecture for the z-13/20? > > Z-12 also appears to fit the bill. > > Thanks, > > Michael- > ________________________________ Message 3 _____________________________________ Time: 05:24:15 PM PST US From: Michael Burbidge Subject: Re: AeroElectric-List: One battery/two alternators IFR z-diagram SGkgUmljaywNCg0KSSBnb3QgdGhlIGluZm9ybWF0aW9uIGZyb20gYSB0aHJlYWQgaW4gdGhlIGFl cm9lbGVjdHJpYyBGQVE6IGh0dHA6Ly93d3cuaG9tZWJ1aWx0ZXhwZXJpbWVudGFsLmNvbS9Vc2Vm dWxEb2NzL0Flcm9FbGVjdHJpYy1MaXN0X0ZBUS5wZGYNCg0KSXQgbG9va3MgbGlrZSB5b3XigJly ZSBzZXQgYmVjYXVzZSB5b3UgaGF2ZSBzZWxmLXBvd2VyaW5nIFBtYWdzIGFuZCBiYWNrdXAgcG93 ZXIgb24geW91IEc1LiBCdXQgaXQgZG9lcyBzZWVtIHRvIG1lLCBhY2NvcmRpbmcgdG8gdGhpcyB0 aHJlYWQsIHRoYXQgYSBmYWlsZWQgY29udGFjdG9yIGNhbiByZXN1bHQgaW4gdG90YWwgcG93ZXIg bG9zcyB1c2luZyB0aGUgei0xMiBhcmNoaXRlY3R1cmUuDQoNCk1pY2hhZWwtDQoNCnAucy4gSGVy 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