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Old 01-18-2016, 01:10 PM   #1
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2014 16' Sport
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Fuse colors

In subzero Wisconsin today, I'm thinking about spring and have a simple question. I have a 2014 16" Sport and am wondering about the fuse colors. The chart that came with my trailer has a diagram that lists the fuses by color, along with what they power. But apparently they are all 15 amp fuses. I want to purchase extra fuses to carry with me, but what's up with the different colors? The 15 amp fuses I see for sale are blue. Can I just get a supply of 15 amp fuses and not worry about color? My apologies for what I'm assuming is probably a very simple question, but I'm an English teacher (as opposed to, say, a tech ed instructor) trying to learn how to maintain my own trailer (and my husband doesn't know the answer to my question).
Thanks you for any help you can provide.
Sue
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Old 01-18-2016, 01:21 PM   #2
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Fuse colors are standard. For example all 15 amp blade type fuses are Blue, 10 amps are red, 20 amps are yellow and so on. You can find the color if you really care by Googling something like 'fuse color standards'.

Basically either replace by color or amp number. Either one works.
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Old 01-18-2016, 01:42 PM   #3
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Fuse colors are standard. For example all 15 amp blade type fuses are Blue, 10 amps are red, 20 amps are yellow and so on. You can find the color if you really care by Googling something like 'fuse color standards'.

Basically either replace by color or amp number. Either one works.

Exactly what I thought. Thanks much for the information.
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Old 01-18-2016, 08:30 PM   #4
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My rig has DC circuit breakers. Out of curiosity, are fuses just another example of Airstream cutting costs, or have the shorter rigs always had fuses?
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Old 01-18-2016, 10:09 PM   #5
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In many ways fuses are a better solution than the automatic reseting circuit breakers that Airstream used for a period of time.

When the automatic resetting CB is overloaded with a true short, it cycles on and off, on and off, and eventually fails, possibly causing an overheating fire. A fuse simply blows open, and forces one to find the problem. No danger like if the rig sat unused and the circuit breaker started to cycle without anyone knowing it.

So, to answer your question, the move back to fuses was probably a good one.
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Old 01-18-2016, 11:06 PM   #6
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In my '98, the breakers have to be manually reset if they trip.
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Old 01-18-2016, 11:22 PM   #7
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Well, you have a good system then if the DC breakers are manually reset. I have not seen anyone mention that they had those. The automatic reset ones were used for a while.
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Old 01-19-2016, 08:59 AM   #8
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Originally Posted by idroba View Post
Fuse colors are standard. For example all 15 amp blade type fuses are Blue, 10 amps are red, 20 amps are yellow and so on. You can find the color if you really care by Googling something like 'fuse color standards'.

Basically either replace by color or amp number. Either one works.
Are you sure ? Bought some at Advance Auto, bought some off Amazon
I have some 35 that are purple, some green and some 30s that are green.

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Old 01-19-2016, 09:11 AM   #9
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Well, you have a good system then if the DC breakers are manually reset. I have not seen anyone mention that they had those. The automatic reset ones were used for a while.
I believe all the breakers in the electrical center are manual resetting in the Classics (others?). I can't recall if the ones on the front wall, in the battery positive cable are manual....but I think not. Just like auto headlights, I think they, by FMVSS, must be self-resetting for the break away power to be there for trailer brakes.

BTW, the self reset temperature threshold is far below any risk of a thermal event. Conductors heat up pretty uniformly when a dead short occurs.
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Old 01-19-2016, 10:09 AM   #10
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Are you sure ? Bought some at Advance Auto, bought some off Amazon
I have some 35 that are purple, some green and some 30s that are green.

Here is a PDF reference to SAE standard fuse colors. Note that 35 amp fuses are not even listed, nor is the color purple. So, who knows what is available out there from off shore manufacturers.

http://www.farnell.com/datasheets/82316.pdf
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Old 01-19-2016, 10:25 AM   #11
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I believe all the breakers in the electrical center are manual resetting in the Classics (others?). I can't recall if the ones on the front wall, in the battery positive cable are manual....but I think not.
My classic has the DC breaker panel on the wall behind the sofa and above the batteries. Here is how they are described in my manual--
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Old 01-19-2016, 11:02 PM   #12
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Here is a PDF reference to SAE standard fuse colors. Note that 35 amp fuses are not even listed, nor is the color purple. So, who knows what is available out there from off shore manufacturers.

http://www.farnell.com/datasheets/82316.pdf
I said purple but I found 'violet' for the 3 amp at a Bussman site.

The stock inverter (WF-600T) in my AS uses 35 amp fuses, found them only on Amazon. The automotive stores had 25, 30 and 40. I used a 30 until I got the 35, had to buy a box of them just to get the 2 I needed. They are made in the USA (Genetic Los Angeles) and are dark green, OEM has no markings and are violet. The Cooper-Bussmann site lists 35 amp as being blue-green in color.
Color Code Amps 2 Fuse Blister Pack
Blue-Green 35 BP/ATC-35ID

The 30 amp are the standard green color, got them in a box of fuses at the local Advance Auto store. None of the fuses are marked but the fuse tester that came with them says Cooper Bussmann and all of the fuses' colors match the standard.

So the only unknown is the origin of the 2 original violet fuses.
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Old 01-19-2016, 11:31 PM   #13
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The WFCO inverter was made in China. So that is probably where the non standard color came from.
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