Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-30-2006, 08:34 PM   #15
Site Team
 
, Minnesota
Join Date: Aug 2003
Posts: 6,940
Images: 59
My A/C needs 12VDC to make the controls work. The compressor and fan run on 120VAC, but those won't turn on without the 12VDC.
__________________

__________________
markdoane is offline   Reply With Quote
Old 10-30-2006, 08:50 PM   #16
Rivet Master
 
davidz71's Avatar
 
1986 25' Sovereign
Southern Middle , Tennessee
Join Date: Mar 2002
Posts: 3,150
Images: 23
24 volt transformer

My '77 Excella with original Armstrong Baybreeze AC utilized a 125 v. in to 24 volt out transformer for the controls. It went bad, was reading 9 v. at the transformer and zero reading at the control. A new transformer took care of the problem. Any reference to 12 volt and the AC surely must refer to this connection.
__________________

__________________
Craig

AIR #0078
'01 2500hd ext. cab, 8.1 litre gas, 5 sp. Allison auto
3.73 rear end
Mag-Hytec rear diff cover
Amsoil Dual by-pass oil filtration system
Amsoil synthetics all around
265 watt AM Solar, Inc. system
davidz71 is offline   Reply With Quote
Old 10-30-2006, 09:06 PM   #17
Rivet Master
 
clancy_boy's Avatar
 
2003 22' International CCD
Kiln , Mississippi
Join Date: Dec 2005
Posts: 2,780
Images: 8
Power Loss

One reason to have a bettery is if the shore power goes out. You could then atleast have lights, fan, and 12v accessories for a while. Hey, I went through Katrina - I always plan for the loss of utilities - can't help it.
__________________
Michael & Tina with Layla and Preston BZ
The family has grown.
2003 22' INTERNATIONAL CCD
clancy_boy is offline   Reply With Quote
Old 10-30-2006, 09:31 PM   #18
Rivet Master
 
Tarheel's Avatar
 
2001 34' Limited S/O
Moyock , North Carolina
Join Date: Feb 2004
Posts: 1,010
Images: 21
I put in two Sam's Club deep cycle Marine batteries 27 series 4-5 years ago. They are in need of replacing. I have been more than happy with the service that they have provided. Rick
__________________
Keep the shiny side up.
WBCCI # 348
Past Region 3 President
Past President Tidewater Unit 111
Rick Bell in "Silverbell"
Tarheel is offline   Reply With Quote
Old 11-01-2006, 11:43 AM   #19
Rivet Master
 
Fyrzowt's Avatar
 
2000 25' Safari
West of Fort Worth , Texas
Join Date: Aug 2006
Posts: 6,697
Images: 8
Batteries, Boondocking and more

Here's a website that has much 12 volt electrical and battery info, broken into part 1 and part 2. He also goes into energy saving tips for boondocking.

http://bart.ccis.com/home/mnemeth/12volt/12volt.htm
__________________
Fyrzowt is offline   Reply With Quote
Old 11-01-2006, 02:32 PM   #20
Rivet Master
 
2007 25' Safari FB SE
Suburbia , Sunny So Cal
Join Date: Jun 2006
Posts: 3,756
Quote:
Originally Posted by slowolf
Does anybody know if two group 27 batteries will fit in the A-frame mounted battery box on late model Airstreams?
I'm curious about that one myself. Anybody know?
__________________
I'd rather be boon docking in the desert.

WBCCI 6731 FCU
AIR# 13896
CA 4
Goin camping is offline   Reply With Quote
Old 02-03-2007, 02:53 PM   #21
2 Rivet Member
 
Loren's Avatar
 
Join Date: Jul 2004
Posts: 76
Wire Size

rama777,

Wire is sized safely to carry the highest current that the system will deliver. In your case, this is 60 amps. That requires 4 gauge wire.

If your batteries are dead, your converter/charger will try to deliver its maximum rated current, which is 60 amps. 10 gauge wire is usually rated to carry only 30 amps. Do you want to run 60 amps through 30 amp wire inside your trailer? I don't.

In practice, your converter will almost never produce that amount of current, since your batteries will almost never be discharged enough to take it, but it's possible. Don't install wiring that is too small.

Loren

Edit: I have found (on McMaster-Carr's web site) some wire smaller than 4 gauge that will carry 60 amps, so it's possible to use something smaller. Just be sure that whatever wire you choose will carry the 60 amp load from your converter.
__________________
2012 New Horizons Travel Trailer (formerly an Airstream owner)
2008 Dodge 2500 diesel with Equal-i-zer hitch.
Loren is offline   Reply With Quote
Old 02-03-2007, 03:16 PM   #22
2 Rivet Member
 
Loren's Avatar
 
Join Date: Jul 2004
Posts: 76
Fuse Sizing

Contrary to "common knowledge", fuses are not installed in a circuit to protect equipment. At least, they are not installed in the wired part of the circuit. Each piece of equipment attached to electrical power should have its own built-in protection, either in the form of a fuse or something else.

A fuse is installed in a circuit to protect the wire. Here's how it works:
If your circuit consists of 15 load centers, each of which draws 2 amps, it will be wired with a certain wire size, depending upon the maximum number of loads that are expected to be on at the same time. Let's say that the designer expects a maximum of 10 simultaneous loads in this case. He would install wire capable of carrying 20 amps, typically 12 gauge wire. He would also install a fuse rated at 20 amps to protect the wire from overload.

Obviously a 20 amp fuse is not much protection for a device that draws only 2 amps during normal operation since the device would probably be smoking by the time it is drawing only 10 amps. That 20 amp fuse is to protect the wire.

If all 15 loads were turned on simultaneously, the load would reach 30 amps, which would be dangerously high for the 12 gauge wire and which could cause a fire. Before this occurs, however, the 20 amp fuse would blow.

Uwe has the right idea. Use wire thatís large enough and install a fuse to protect it. Using his example, if he is using 6 gauge wire, he should have about a 40-50 amp fuse, depending on the specifications for the wire he is using. If his converter is rated at 60 amps, he could expect the fuse to blow on occasion.

Loren
__________________

__________________
2012 New Horizons Travel Trailer (formerly an Airstream owner)
2008 Dodge 2500 diesel with Equal-i-zer hitch.
Loren is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Battery Location uwe 1970-79 Tradewind 23 12-02-2015 08:41 AM
Battery Dead - Again & Again eraffety Airstream Motorhome Forums 10 11-02-2002 12:03 AM
igniton switch and the mystery of the dead battery Curtis-79MH Airstream Motorhome Forums 3 10-25-2002 03:58 PM
Dumb question - 345LE - does the gennie charge the auto battery? williamhenshall General Motorhome Topics 6 08-26-2002 06:49 AM
Battery Dead/Power jack question jcanavera Jacks, Stabilizers, Lifting and Leveling 34 08-16-2002 02:51 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:34 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.