---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 05/31/24: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:19 AM - Re: ANL fuse 60 amp. (Robert L. Nuckolls, III) 2. 07:29 PM - Re: ANL fuse 60 amp. (Kelly McMullen) ________________________________ Message 1 _____________________________________ Time: 03:19:53 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: ANL fuse 60 amp. At 10:31 PM 5/29/2024, you wrote: >B&C and SteinAir have them. > >Those things aren't really aircraft parts. They're more for >car speakers and things like that. Not that they don't work >fine. I have them in my airplanes too. Not sure there is ANY catalog part, fuses and limiters included, that you might call an 'aircraft' part. Catalog components become suited to task for aviation 'cause they appear on the drawings for a certified airplane, military vehicle, spacecraft, etc. The ANL/ANN series devices have been used aboard aircraft for about 100 years . . . lots of them scattered about B17's, KingAirs, LearJets and the like. I introduced them to OBAM aviation a few decades ago after an abortive decision to try the JNN series fuses as bolt-on, in-line fuses for b-lead protection. http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Bussman/JNN_Specs.pdf Bad idea, these critters didn't have the mechanical\ robustness needed for such service. Plan-B was the ANL series devices and companion fuse-holders . . . certainly ROBUST but rather huge for little airplanes. http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Bussman/ANL_Specs.pdf http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Bussman/Limiter_FuseBlocks.pdf Not too many years after that, the major players in fusible protection (Bussman, Littlefuse, etc) Brought out some hardened and more attractive alternatives to the sheet-metal, limiters common to some European cars. Those are illustrated on the website as: http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Littlefuse/498.pdf http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Littlefuse/298.pdf A visit to about any big automotive parts store will provide sources for devices cited above or very similar. Holders for the modern devices are simple insulating blocks drilled for fuse/wiring and attachment to the airframe. I've made many of these things with a table or band-saw and drill press. Phenolic, Delren, Lexan, even kitchen cutting boards offer sufficiently robust, non-conductive material for a base. The car parts stores, amazon, ebay, et.als. will also have manufactured holders. http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Littlefuse/0498-MIDIFuseholder.pdf But I usually build 'em when I need one. You could also consider a fusible link. If it were my airplane, a 6AWG b-lead protected by a 10AWG fusible link would be an attractive up-grade from bolt-on current limiters. The nagging question is, Why did your original limiter open up? Electrical fault or mechanical aging? I think I'd jumper across your original ANL mounting space with a hung of 12AWG wire and fire up the engine to see how the alternator is performing. Without seeing the wiring diagram for your airplane, I'm guessing that the ANL was for alternator b-lead protection? Inquiring minds would like to know . . . Bob . . . //// (o o) ===========o00o=(_)=o00o======== < Go ahead, make my day . . . > < show me where I'm wrong. > ================================ In the interest of creative evolution for the-best-we-know-how-to-do based on physics and repeatable experiment. ________________________________ Message 2 _____________________________________ Time: 07:29:12 PM PST US Subject: Re: AeroElectric-List: ANL fuse 60 amp. From: Kelly McMullen Bob, I am procuring tomorrow the necessary pieces to test with a fusible link, as I have not found what caused the fuse to blow. It is 10 years old so age could have been a factor I didn't have the pieces leftover from my build. I will test the system before installing a new fuse. Kelly On 5/31/2024 3:19 AM, Robert L. Nuckolls, III wrote: > The ANL/ANN series devices have been used aboard > aircraft for about 100 years . . . lots of them > scattered about B17's, KingAirs, LearJets and the > like. I introduced them to OBAM aviation a few > decades ago after an abortive decision to try > the JNN series fuses as bolt-on, in-line fuses > for b-lead protection. > Plan-B was > the ANL series devices and companion fuse-holders . . . > certainly ROBUST but rather huge for little > airplanes. > > http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Bussman/ANL_Specs.pdf > > http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Bussman/Limiter_FuseBlocks.pdf > > > A visit to about any big automotive parts store > will provide sources for devices cited above > or very similar. > > Holders for the modern devices are simple insulating > blocks drilled for fuse/wiring and attachment to the > airframe. I've made many of these things with a table > or band-saw and drill press. Phenolic, Delren, Lexan, > even kitchen cutting boards offer sufficiently > robust, non-conductive material for a base. > > The car parts stores, amazon, ebay, et.als. will also > have manufactured holders. > > http://aeroelectric.com/Mfgr_Data/Fuses_and_Current_Limiters/Littlefuse/0498-MIDIFuseholder.pdf > > > But I usually build 'em when I need one. > > You could also consider a fusible link. If it were > my airplane, a 6AWG b-lead protected by a 10AWG > fusible link would be an attractive up-grade from > bolt-on current limiters. > > The nagging question is, Why did your original > limiter open up? Electrical fault or mechanical > aging? I think I'd jumper across your original > ANL mounting space with a hung of 12AWG wire > and fire up the engine to see how the alternator > is performing. Without seeing the wiring diagram > for your airplane, I'm guessing that the ANL was > for alternator b-lead protection? > > Inquiring minds would like to know . . . > > Bob . . . > ------------------------------------------------------------------------------------- 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.