Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-04-2018, 02:13 PM   #1
New Member
 
bryan , TX
Join Date: Jul 2017
Posts: 2
Using existing 120v wiring for 12v system

New here and I can't seem to find an answer to my current question. First, let me admit this trailer is not an Airstream but it is a Streamline so it's pretty similar. The issue I'm having is that the trailer was built in 1960, therefore the 12v system is basically nonexistent. I have one small ceiling light and the old air compressor that pressurized the fresh water system. That's it. They both were powered by the tow vehicles 12v power source so no on board batteries or converter. While restoring the trailer I'd like to convert all of the lighting to 12v. I know 12v bulbs with a12 based exist also I'm thinking i could retain the original light fixtures by using those. Where my real question lies is whether or not I could isolate the wires that each light fixture is connected to, disconnect it from the breaker and wire that into a 12v system with a converter so I could also retain the already installed 120v plugs. Basically I want to retrofit the trailer with 12v without removing all of the interior skin. Thanks in advance.
__________________

60streamline is offline   Reply With Quote
Old 03-04-2018, 02:42 PM   #2
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 3,881
I'd be surprised if light fixture were isolated from outlets on a branch circuit from a breaker. You might have a mix of lights and outlets on one or more breakers. The only way to know for sure is to test with a meter or 120 outlet tester. If the trailer wiring is safe, you can power up the 120V and cycle breakers to see what is connected to each breaker. If you get lucky and only lighting is on a circuit I see no technical reason why you could not disconnect that from the 120V breaker and wire that circuit into your new 12V distribution. Airstream, along with many boat builders of that era used black wire for 12V and white for ground, similar to the AC convention where black was hot and white was neutral. I would seriously consider changing the fixtures however, to minimize confusion and ensure availability of bulbs when you are out camping.

Al
__________________

__________________
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO
WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins



Al and Missy is offline   Reply With Quote
Old 03-04-2018, 04:31 PM   #3
New Member
 
bryan , TX
Join Date: Jul 2017
Posts: 2
I guess I was brain farting and not considering that trailer are wired in circuits like homes are lol. Looks like I'll probably end up removing the interior panels... what's 5000 more rivets anyway!
60streamline is offline   Reply With Quote
Old 03-09-2018, 08:23 AM   #4
3 Rivet Member
 
Currently Looking...
Fort Davis , Texas
Join Date: May 2017
Posts: 249
Don't know what your budget is and if you would rather spend more money instead of many man hours. This suggestion requires little or no circuit re-wiring.

Install a battery system, solar system, and an AC Pass Through (hybrid) Inverter/Charger. This will do the following:

1. On shore power or generator the Inverter/Charger will supply your AC needs and also charge your batteries and supply any DC needs.

2. When no external AC is available the inverter/charger will supply your AC needs and the solar system will re-charge your batteries. DC loads are also provided for.

This is an over simplified explanation, suggest you contact AMSolar and discuss with them. URL is: https://amsolar.com/

Pat
pdavitt is offline   Reply With Quote
Reply

Tags
12v


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
Using 120V generator as temporary 120/240 system backup? JRF0st3r Generators & Solar Power 38 01-04-2018 03:23 PM
12v/120v System From Scratch bredlo Electrical - Systems, Generators, Batteries & Solar 6 06-17-2014 11:22 AM
120V AC/12V DC Norcold Mike S Refrigerators 12 08-22-2008 10:39 AM
Is DSI 12v or 120v? dickwhite1 Water Heaters, Filters & Pumps 2 06-25-2006 05:21 PM
Changover Trouble(120v-12v) 73ANDY Electrical - Systems, Generators, Batteries & Solar 5 04-22-2003 09:04 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 03:04 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.