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Breakers
Sonny,
AeroElectric Bob's fuse based schematics still utilize a few breakers.... Are these on the panel, or have you hidden them somewhere? gil A |
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You must've read a different Aerolectric Connection. ;) Just kidding...Bob actually says that you can use breakers, but fuses are cheaper and easier. I'm wondering why anyone would use breakers considering the cost. Aside from that, I almost used one 60-Amp breaker for the Alt Field, but ended up deciding to use his really-big-60-Amp-fuse idea instead (mounted just like Dan C's). I like the idea of keeping the high current lines out of the cockpit. My last airplane (Pulsar XP) had lots of RF issues and I'll do anything at this point to avoid that frustration. Even if it means doing exactly as Bob suggests by keeping the large wire runs around 6 inches...which is partially my reason for having the fuse blocks mounted way up front. I like the idea of a flip-down panel, but that's a minor convenience. Besides, if the fuses protect the wires, and your system is wired correctly, you should never want to change a fuse (or push in a breaker) in flight. Aside from the maintenance hassle of "diving" under the panel head-first, doing it this way is preferable to me...and you should only have a couple instances where you'll have to change a fuse (shorted wire or malfunctioning equipment). I know somebody will tell me there are other reasons! ;) |
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Paul |
AeroElctric Bob does use some breakers
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Actually not, I read the same book.....:)....the basic Z-11 schematic shows 1 breaker - ALT FIELD, and the dual alternator/single battery option seems to show 5 on Z-12. The dual battery/Dual Alternator Z-14 uses two breakers. Check the exact Z schematic that you intend to use.....:) I fully agree that not bringing the heavy wire and a 60 Amp breaker/fuse inside the cabin is a good idea. The ANL is a good solution. gil A |
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Paul, you make an excellent point. The MGL EFIS does not have a power switch so cycling would require flipping the Master switch. I'm already committed to using fuses, so my alternate thinking would be to add a switch for each EFIS. Not sure I like the idea of loading up my panel with switches, though. I can certainly see the value that you're pointing out with regards to maintenance. The good thing about my panel though is that everything else does have an on/off switch (comm, xpndr, intercom), so using the Master Switch on the ground is essentially the same thing. I'm open to further discussion on this, too...If my thinking is going down the wrong path, please let me know! :) |
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