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jay(at)horriblehyde.com
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 Posted: Mon Dec 21, 2009 4:31 am Post subject: In-line Battery Fuse; great find |
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I came across a great inline battery fuse that simplified my life a lot- see the picture.
I found it at our local RS Components store (part number 337-7921 for the 75A version). Search www.rssouthafrica.com using the part number to see more. I’m sure that you will be able to find similar things elsewhere.
Jay
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longg(at)pjm.com
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| Posted: Mon Dec 21, 2009 7:42 am Post subject: In-line Battery Fuse; great find |
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Jay,
Nice looking product. Many auto manufacturers use a similar approach with a cheaper fuse link or glass fuse (old jobs). Do they have one for a 10mm bolt?
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Jay Hyde
Sent: Monday, December 21, 2009 7:26 AM
To: aeroelectric-list(at)matronics.com
Subject: In-line Battery Fuse; great find
I came across a great inline battery fuse that simplified my life a lot- see the picture.
I found it at our local RS Components store (part number 337-7921 for the 75A version). Search www.rssouthafrica.com using the part number to see more. I’m sure that you will be able to find similar things elsewhere.
Jay
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Mon Dec 21, 2009 8:24 am Post subject: In-line Battery Fuse; great find |
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At 06:25 AM 12/21/2009, you wrote:
| Quote: | I came across a great inline battery fuse that simplified my life a lot- see the picture.
I found it at our local RS Components store (part number 337-7921 for the 75A version). Search www.rssouthafrica.com using the part number to see more. I’m sure that you will be able to find similar things elsewhere. |
In what applications have you found this
product to be useful?
Bob . . . [quote][b]
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jay(at)horriblehyde.com
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| Posted: Mon Dec 21, 2009 9:45 am Post subject: In-line Battery Fuse; great find |
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Doesn’t look like it- but perhaps you can make an extension from your battery post to go down to an 8mm hole as I described in my other mail.
Jay
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of longg(at)pjm.com
Sent: 21 December 2009 05:37 PM
To: aeroelectric-list(at)matronics.com
Subject: RE: AeroElectric-List: In-line Battery Fuse; great find
Jay,
Nice looking product. Many auto manufacturers use a similar approach with a cheaper fuse link or glass fuse (old jobs). Do they have one for a 10mm bolt?
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Jay Hyde
Sent: Monday, December 21, 2009 7:26 AM
To: aeroelectric-list(at)matronics.com
Subject: AeroElectric-List: In-line Battery Fuse; great find
I came across a great inline battery fuse that simplified my life a lot- see the picture.
I found it at our local RS Components store (part number 337-7921 for the 75A version). Search www.rssouthafrica.com using the part number to see more. I’m sure that you will be able to find similar things elsewhere.
Jay
| Quote: | | [b][b]www.aeroelectric.com |
01234567890123456789
[quote][b]
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jay(at)horriblehyde.com
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| Posted: Mon Dec 21, 2009 9:45 am Post subject: In-line Battery Fuse; great find |
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I used it to protect a long fat wire from my aux/ 2nd battery which is located at the back of the aircraft. I had quite a small space to work in and hadn’t thought about protecting the wire in the first place, but realized that I needed to put some form of protection in. Whilst searching for a local ANL type device I came across this and realized that I wouldn’t need to add the ANL base; since there wasn’t much space to work in that was a great relief.
The picture that I added isn’t completely clear- the device itself is just the white/cream coloured box with a clear top that is between the lug and the battery terminal. My battery terminals are flat but the holes in them are too small for an 8mm bolt so I added a copper extension with an 8mm hole to bolt the fuse to. I also had to make an insulating washer to insulate the nut as I had not ordered the insulating nut that is shown in the picture.
Jay
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III
Sent: 21 December 2009 06:21 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: AeroElectric-List: In-line Battery Fuse; great find
At 06:25 AM 12/21/2009, you wrote:
I came across a great inline battery fuse that simplified my life a lot- see the picture.
I found it at our local RS Components store (part number 337-7921 for the 75A version). Search www.rssouthafrica.com using the part number to see more. Im sure that you will be able to find similar things elsewhere.
In what applications have you found this
product to be useful?
Bob . . . | Quote: | | www.aeroelectric.com |
01234567890123456789
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Mon Dec 21, 2009 11:48 am Post subject: In-line Battery Fuse; great find |
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At 11:35 AM 12/21/2009, you wrote:
| Quote: | | I used it to protect a long fat wire from my aux/ 2nd battery which is located at the back of the aircraft. I had quite a small space to work in and hadn’t thought about protecting the wire in the first place, but realized that I needed to put some form of protection in. Whilst searching for a local ANL type device I came across this and realized that I wouldn’t need to add the ANL base; since there wasn’t much space to work in that was a great relief. |
Hmmmm . . . conventional wisdom in TC aircraft calls
for no single always-hot wire to be protected at more
than 5A (breakered) from which I extrapolated 7A (fused).
FAT feeders from a battery normally call for at least
a mini-contactor like . . .
http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z32K.pdf
"If the bus isn't at the battery, it's not a battery bus"
Bob . . . [quote][b]
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jay(at)horriblehyde.com
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| Posted: Mon Dec 21, 2009 11:38 pm Post subject: In-line Battery Fuse; great find |
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Good point- I have a problem with the aircraft architecture though; the kit manufacturers don’t tell you where you can drill holes into structural members so I had to go around them and through different members. I didn’t want to drill too many holes or stuff a lot of thinner wires into a small hole so I decided to run one fat wire that is well protected, both electrically and mechanically (much easier to do with one fat wire than many thin ones) up to the front.
In this instance the battery bus is not a battery bus as defined, but I have been able to get a second battery in at the back of the aircraft without making too many holes in important places.
Jay
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III
Sent: 21 December 2009 09:46 PM
To: aeroelectric-list(at)matronics.com
Subject: RE: AeroElectric-List: In-line Battery Fuse; great find
At 11:35 AM 12/21/2009, you wrote:
I used it to protect a long fat wire from my aux/ 2nd battery which is located at the back of the aircraft. I had quite a small space to work in and hadnt thought about protecting the wire in the first place, but realized that I needed to put some form of protection in. Whilst searching for a local ANL type device I came across this and realized that I wouldnt need to add the ANL base; since there wasnt much space to work in that was a great relief.
Hmmmm . . . conventional wisdom in TC aircraft calls
for no single always-hot wire to be protected at more
than 5A (breakered) from which I extrapolated 7A (fused).
FAT feeders from a battery normally call for at least
a mini-contactor like . . .
http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z32K.pdf
"If the bus isn't at the battery, it's not a battery bus"
Bob . . . | Quote: | | www.aeroelectric.com |
01234567890123456789
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Tue Dec 22, 2009 7:09 am Post subject: In-line Battery Fuse; great find |
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At 01:35 AM 12/22/2009, you wrote:
| Quote: | Good point- I have a problem with the aircraft architecture though; the kit manufacturers don’t tell you where you can drill holes into structural members so I had to go around them and through different members. I didn’t want to drill too many holes or stuff a lot of thinner wires into a small hole so I decided to run one fat wire that is well protected, both electrically and mechanically (much easier to do with one fat wire than many thin ones) up to the front.
In this instance the battery bus is not a battery bus as defined, but I have been able to get a second battery in at the back of the aircraft without making too many holes in important places.
Jay |
Then as an auxiliary battery with all feeders capable
of delivering hazardous levels of energy in a crash,
then incorporation of a battery contactor at the battery
is indicated.
I think I mentioned some years back an anecdote offered
by a good friend and colleague at Beech. Before joining
the electrical design group he spent a number of years
digging around in smoking holes. He noted once
at lunch that every crash he investigated when the
airplane didn't burn, the ship's battery was most likely
found tossed out somewhere into the woods. If the airplane
burned, the battery was most likely located in the
wreckage.
If you're not planning on an system for ejecting the
battery(ies) when on short final to the rocks, then
having a short-coupled battery contactor and/or minimally
fused battery busses is the next best thing.
Bob . . . [quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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