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Jerry Grimmonpre'
Joined: 09 Jan 2006
Posts: 144
Location: Huntley, Illinois 60142
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 Posted: Mon Apr 17, 2006 11:44 am Post subject: Wire length vs. fuse size |
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Bob ...
If a load of 15A is fed with a 12 foot length of wire, is an inline fuse
used in this situation? Is the fuse size increased to accommodate the wire
length? What size fuse would be needed? This wire will feed the endurance
bus from the aft battery lug (bypassing the aft contactor) as a continuous
backup source of power.
Thanks ...
Jerry Grimmonpre'
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lhelming(at)sigecom.net
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| Posted: Mon Apr 17, 2006 2:59 pm Post subject: Wire length vs. fuse size |
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flyboy.bob(at)gmail.com
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| Posted: Mon Apr 17, 2006 4:14 pm Post subject: Wire length vs. fuse size |
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Jerry.
It seems to me that if you are going to fuse it for 20A you need to
size the wire for 20A also what you are protecting is an overload on
the wire! . . . 12 ft isn't going to be a huge deal . . . if you are
concerned go up one size.
Good Luck,
Bob in SE Iowa
On 4/17/06, LarryRobertHelming <lhelming(at)sigecom.net> wrote:
[quote]
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Wes Bunker
Joined: 10 Jan 2006
Posts: 5
Location: Lincoln, CA
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| Posted: Tue Apr 18, 2006 12:07 pm Post subject: Re: Wire length vs. fuse size |
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Jerry, fuse size is not based on wire length, but wire gage, or diameter. You can find the fuse size to wire size assignment in AC43.13-1B on page 11-15 in Table 11-3. Remember, first you determine MINIMUM wire size as described in section 5, and then the MAXIMUM fuse size per section 4.
Have fun!
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_________________
Wes
N7337G
C172K |
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Jerry Grimmonpre'
Joined: 09 Jan 2006
Posts: 144
Location: Huntley, Illinois 60142
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| Posted: Tue Apr 18, 2006 2:36 pm Post subject: Wire length vs. fuse size |
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Do Not Archive
My thanks to the list ...
I've got a 10 AWG wire and 20A inline fuse designed into the mix. I'm on my
way to ordering lots of electrical stuff.
Jerry Grimmonpre'
RV8A
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