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lee.logan(at)gulfstream.c
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 Posted: Tue Jun 27, 2006 12:09 pm Post subject: Wire sizes |
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Oldest question in the book and perhaps heresy on this site, but here goes
anyway: Greg Richter "Aircraft Wiring for Smart People" recommends 18 and
22 guage wire for nearly all requirements but presupposes a 24 volt system
per his recommendations. I'm at work and looking to order some of the wire
for the next steps in my project and don't know what the equivalents would
be in a 12 volt system. Do I step up one size or two or is there some
other formula that applies? I have The Aeroelectric Connection at the
hangar but I need to order some of this from here at work. Any help?
Lee...
Lee Logan
Government Programs and Sales Support
Gulfstream Aerospace Corporation
Savannah, Georgia
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endspeed(at)yahoo.com
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| Posted: Tue Jun 27, 2006 1:43 pm Post subject: Wire sizes |
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Hi Lee,
Just figure out the amperage load the wire is going
to have to carry and check the distance it has to
carry it. Then check Vans construction manual. On
the last page in the section called Electrical Wiring
Notes there is a wire length versus wire size for any
amperage carried figure that will answer your
question.
Bob
--- lee.logan(at)gulfstream.com wrote:
| Quote: |
lee.logan(at)gulfstream.com
Oldest question in the book and perhaps heresy on
this site, but here goes
anyway: Greg Richter "Aircraft Wiring for Smart
People" recommends 18 and
22 guage wire for nearly all requirements but
presupposes a 24 volt system
per his recommendations. I'm at work and looking to
order some of the wire
for the next steps in my project and don't know what
the equivalents would
be in a 12 volt system. Do I step up one size or
two or is there some
other formula that applies? I have The Aeroelectric
Connection at the
hangar but I need to order some of this from here at
work. Any help?
Lee...
Lee Logan
Government Programs and Sales Support
Gulfstream Aerospace Corporation
Savannah, Georgia
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
| Quote: |
This e-mail message, including all attachments, is
for the sole use of the
intended recipient(s) and may contain legally
privileged and confidential
information. If you are not an intended recipient,
you are hereby notified
that you have either received this message in error
or through
interception, and that any review, use,
distribution, copying or disclosure
of this message or its attachments is strictly
prohibited and is subject to
criminal and civil penalties. All personal messages
express solely the
sender’s views and not those of Gulfstream
Aerospace Corporation. If you
received this message in error, please contact the
sender by reply e-mail
and destroy all copies of the original message.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
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Bret Smith
Joined: 09 Jan 2006
Posts: 178
Location: Mineral Bluff, GA
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lhelming(at)sigecom.net
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| Posted: Tue Jun 27, 2006 5:51 pm Post subject: Wire sizes |
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Lee, I can say after having wired and completed my RV7 last year that you
will need lots of 22 AWG wire. I suggest you think of the colors you will
use. Something like red for power wire, black for ground, and yellow or
white for control. You will need some other size wires and 18 is one of
them. You will also need some heavier wire but not great lengths. In the
starter and alternator and battery cables you will need 2 and 4 awg wire.
But you will mostly need 22 AWG. I originally bought several hundred feet
and had to buy more. I wish I could tell you exactly how much of each color
you need but I can't with any accuracy. Depends a lot on what your
instruments and electrical needs are and type of plane. My system is 12V.
Best wishes. Larry in Indiana
---
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derek(at)sington.net
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| Posted: Wed Jun 28, 2006 4:48 am Post subject: Wire sizes |
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Hi Larry,
As a fellow '7 builder, how much of the 22AWG that you bought was shielded?
Many thanks,
Derek Sington.
--
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Mark Phillips in TN
Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN
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| Posted: Wed Jun 28, 2006 6:19 am Post subject: Wire sizes |
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In a message dated 6/28/06 7:54:25 AM Central Daylight Time, derek(at)sington.net writes:
| Quote: | | how much of the 22AWG that you bought was shielded? |
>>>>
Derek, this stuff is great for those runs where you need a feed and return going to the same place and back, such as mic and ptt. by using the shield as the return. I can't think of an application where you might use the shield as a "shield", but there may be. How much you need will depend on location of devices- I might have used less than 50' in my RV-6A.
Mark
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