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Old 02-17-2011, 04:48 PM   #1
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Why trailers burn

Nearly all RV fires are of electrical origin, despite the recent attention to fridge fires (which are statistically still quite rare).

What are the failures that most commonly lead to such fires? What can we do to prevent them?
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Old 02-17-2011, 06:00 PM   #2
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Question I have is the main positive cable running off the battery, where is the first fuse/breaker on that wire? How far through the trailer does it go unfused?

On the 120 volt side maybe termination of the outlets when running high draw heaters, etc.
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Old 02-17-2011, 06:34 PM   #3
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An eye opener is to walk thru an RV salvage lot, like Cowas...Lots of BBQ'd RV's from the dash and rear engine area...I don't recall seeing any trailers though...
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Old 02-17-2011, 06:40 PM   #4
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I'm curious about how many vintage trailers have electrical fires caused by the old aluminum wiring. I was unable to rewire my trailer when we did the shell-on floor replacement, so when I needed a new outlet, I was told to use one made for aluminum wires. So I stole an outlet from back in the bathroom, which I didn't need, and installed it next to the new converter. But I do wonder how much risk there really is in the old wiring in my trailer.
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Old 02-17-2011, 06:46 PM   #5
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Many times during the week I go out and sit in my AS. Sometimes I wonder how it has lasted 38 years and if it will die on my watch. I have fused many of the wires and replaced a lot of the LP gas pipes to prevent this from happening. I bought new smoke detecters to install but they won't do much good if no one is in the trailer. I think my next preventive maintenance is to get rid of the old humm box and put in a state of the art unit. I sure would hate to be the one that lets this beautiful trailer go up in flames.

Doug
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Old 02-17-2011, 06:49 PM   #6
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?? it seems u asked pretty much the same question 366 days ago...

http://www.airforums.com/forums/f48/...ler-61322.html

most of those links i posted then are still good and relevant.

mohos have primarily engine/driveline/exhaust related fires...

trailer's are either operator error ((cooking, over loaded juice, old gadgets, extension cords and so on...))

or electrical, or occasionally propane related...

these are also worth reviewing...

http://www.airforums.com/forums/f42/...eam-46861.html

http://www.airforums.com/forums/f44/...eam-56617.html

http://www.airforums.com/forums/f449...ire-62810.html

http://www.airforums.com/forums/f368...ent-38772.html

as are these...

in fact there is a SPECIFIC and long term a/s engineered fire risk noted and solutions posted here...

http://www.airforums.com/forums/f353...afe-39545.html

and discussions of 'plans' to escape, prevent, avoid...

http://www.airforums.com/forums/f161...lan-15084.html

http://www.airforums.com/forums/f161...ted-17997.html

it's all important stuff and a lot of good things have been posted...

cheers
2air'
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Old 02-17-2011, 07:56 PM   #7
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Okay, I'll tell you about a little-known fire hazard on some 1970's model Airstreams. One you wouldn't even think about. I didn't, until I set an Overlander on fire with it.
Now that I have your attention, how many of us with that era Airstream have the umbilical receptacle in the front of the trailer, behind the LP tanks? How many of them are the original, kind of grey-ish, plastic-y looking ones?
Guess what I found out.
They aren't plastic.
They're magnesium.
That's right.
The stuff they make highway flares out of, because it ignites easily, burns bright, AND YOU CAN'T PUT IT OUT!!! Water makes it much worse.
I set a trailer on fire by the simple act of cutting off the rusted-on mounting bolts with a cutoff wheel. The wheel made the magnesium hot enough it ignited. I got a nice, red flame from it.
You never saw somebody move as fast as i did running inside the trailer, throwing aside the gaucho cushions, nipping the smouldering wires off it, and kicking it outside the trailer, where it continued to sizzle and spume.
After my heart started beating again, I called the boss over, showed him the flaming plug, and gently misted a small amount of water on it. It flared up immediately, it's good it wasn't still on the trailer, or it would have become an aluminum marshmallow.
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Old 02-17-2011, 08:01 PM   #8
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Terry,

Are the new ones the same construction?

Bill

Quote:
Originally Posted by overlander63 View Post
Okay, I'll tell you about a little-known fire hazard on some 1970's model Airstreams. One you wouldn't even think about. I didn't, until I set an Overlander on fire with it.
Now that I have your attention, how many of us with that era Airstream have the umbilical receptacle in the front of the trailer, behind the LP tanks? How many of them are the original, kind of grey-ish, plastic-y looking ones?
Guess what I found out.
They aren't plastic.
They're magnesium.
That's right.
The stuff they make highway flares out of, because it ignites easily, burns bright, AND YOU CAN'T PUT IT OUT!!! Water makes it much worse.
I set a trailer on fire by the simple act of cutting off the rusted-on mounting bolts with a cutoff wheel. The wheel made the magnesium hot enough it ignited. I got a nice, red flame from it.
You never saw somebody move as fast as i did running inside the trailer, throwing aside the gaucho cushions, nipping the smouldering wires off it, and kicking it outside the trailer, where it continued to sizzle and spume.
After my heart started beating again, I called the boss over, showed him the flaming plug, and gently misted a small amount of water on it. It flared up immediately, it's good it wasn't still on the trailer, or it would have become an aluminum marshmallow.
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Old 02-17-2011, 08:04 PM   #9
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Terry,

Are the new ones the same construction?

Bill
No, the new ones are aluminum or pot metal. Non-ignitable. The only plastic ones are pretty obviously black plastic. Now you know why the fire department was at the shop in Riverside a year or so ago...
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Old 02-17-2011, 08:10 PM   #10
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Fire Extinguishers

We receive our new AS next week! Hooray!!

As with our fiver we will carry an "extra" ABC extinguisher on the inside under the sink, and another stored on the outside compartment, probably on the side of the AS.

I certainly will watch for the hot wire from the battery system to the main jack, and enclose it if necessary.

Great thread. Thank you....Zigi
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Old 02-17-2011, 08:22 PM   #11
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Quote:
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until I set an Overlander on fire with it..
Ummmm... Terry...? That was a CLIENT'S Overlander, right????





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Old 02-17-2011, 08:44 PM   #12
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Quote:
Originally Posted by Stefrobrts View Post
I'm curious about how many vintage trailers have electrical fires caused by the old aluminum wiring. I was unable to rewire my trailer when we did the shell-on floor replacement, so when I needed a new outlet, I was told to use one made for aluminum wires. So I stole an outlet from back in the bathroom, which I didn't need, and installed it next to the new converter. But I do wonder how much risk there really is in the old wiring in my trailer.
considering the aluminum wiring was only one year, very few due to aluminum wire.
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Old 02-17-2011, 08:55 PM   #13
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The aluminum wire in my 67 is just fine...Im not planning on replacing it either. Im NOT running an high demand appliances in it either...
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Old 02-17-2011, 08:57 PM   #14
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Ummmm... Terry...? That was a CLIENT'S Overlander, right????





It was a '77... Looked like it had been dredged up out of the bottom of Lake Elsinore...
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