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art(at)zemon.name
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 Posted: Sat Nov 25, 2017 7:31 pm Post subject: 1A Slow Blow Fuse |
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Bob,
In a recent message, you wrote: " I would avoid using fuses lower than 3A for mechanical robustness concerns."
I am installing an MGL backup ASI+altimeter and the installation instructions call for a 1A slow blow fuse. I bought a glass tube fuse and an inline holder.
I do remember what you have written (many times!) about fuses protecting the wires but opted to follow the manufacturer's instructions. I would love to hear your thoughts about this situation.
  -- Art Z.
--
https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel
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ceengland7(at)gmail.com
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| Posted: Sat Nov 25, 2017 9:30 pm Post subject: 1A Slow Blow Fuse |
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1A slow blow sounds oxymoronic to me...
Charlie
On Nov 25, 2017, at 9:37 PM, Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote: | Quote: | Bob,
In a recent message, you wrote: " I would avoid using fuses lower than 3A for mechanical robustness concerns."
I am installing an MGL backup ASI+altimeter and the installation instructions call for a 1A slow blow fuse. I bought a glass tube fuse and an inline holder.
I do remember what you have written (many times!) about fuses protecting the wires but opted to follow the manufacturer's instructions. I would love to hear your thoughts about this situation.
-- Art Z.
--
https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel
|
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art(at)zemon.name
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| Posted: Sun Nov 26, 2017 5:11 am Post subject: 1A Slow Blow Fuse |
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​
On Sat, Nov 25, 2017 at 11:28 PM, Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | 1A slow blow sounds oxymoronic to me...
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to me too but there are lots of 'em available...
https://www.digikey.com/product-detail/en/littelfuse-inc/0313001.HXP/F2543-ND/777259
Cheers,
  -- Art Z.
​
--
https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel
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user9253
Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan
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| Posted: Sun Nov 26, 2017 7:34 am Post subject: Re: 1A Slow Blow Fuse |
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ATC or ATO fuses of 3 amps and larger are available with an LED that glows after the fuse blows.
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Joe Gores |
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nuckolls.bob(at)aeroelect
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| Posted: Sun Nov 26, 2017 10:29 am Post subject: 1A Slow Blow Fuse |
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At 09:29 PM 11/25/2017, you wrote:
| Quote: | Bob,
In a recent message, you wrote: " I would avoid using fuses lower than 3A for mechanical robustness concerns."
I am installing an MGL backup ASI+altimeter and the installation instructions call for a 1A slow blow fuse. I bought a glass tube fuse and an inline holder.
I do remember what you have written (many times!) about fuses protecting the wires but opted to follow the manufacturer's instructions. I would love to hear your thoughts about this situation. |
Generally speaking, it's never wrong to follow
the instructions. I'm always curious as to the
design decisions that prompt such requirements
from manufacturers . . . but one almost never
gets to talk to the guy who did it.
From the airframe side of the fence, mechanical
robustness, reduction in weight, cost and parts
count and designing for failure tolerance germinated
a host of design rules that NEVER speak to what
goes on inside a purchased black box.
Internal workings are the responsibility of
the product's designer. I can tell you that
any supplier asking for a 1A slow blow fuse
to protect an input to a device offered
for a Beech product would be queried in detail.
. . . we probably would have agreed on a
miniature, 2.5 or 5A breaker instead.
Bob . . .
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