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Old 07-09-2013, 11:06 PM   #57
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This thread prompted me to read some owners manuals on Airstream's website. I learned that trailers with two AC units may have a 50 amp service. I did not realize this was an option. The verbiage in the manual is regarding 120v breakers on distribution circuits. What the manuals do not state is if the main breaker is 120v or 240v. Will someone enlighten me?
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Old 07-10-2013, 06:37 AM   #58
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MAN, are we glad you did not plug that in

Actually, out of sheer curiosity...what would happen :O ?
It would/could burn ip a bunch of stuff, like the fridge board, inverter, fan motors, etc...
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Old 07-10-2013, 06:46 AM   #59
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Quote:
Originally Posted by A W Warn View Post
This thread prompted me to read some owners manuals on Airstream's website. I learned that trailers with two AC units may have a 50 amp service. I did not realize this was an option. The verbiage in the manual is regarding 120v breakers on distribution circuits. What the manuals do not state is if the main breaker is 120v or 240v. Will someone enlighten me?
Read RV Electric
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Old 07-10-2013, 07:23 AM   #60
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It would/could burn ip a bunch of stuff, like the fridge board, inverter, fan motors, etc...
More like the converter, microwave, air conditioner, fridge 120 volt side, etc. Not as much the 12 volt stuff.
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Old 07-10-2013, 07:40 AM   #61
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I had a episode at home that resulted in a brief period of 240 on all of the 120 circuits. The result was that every motor and circuit board that was not on a separate surge suppressor fried. My TV and computers were protected by surge suppressors and UPSes. The refrig compressor(not like our AS ammonia units) had its own thermal protection. Circuit boards in the washer, dryer, garage door opener, fan control units, air conditioning units, etc. all had to be replaced. I also replaced all surge suppressors. Basically lighting circuits were OK, but we do not have any 120 lighting circuits on our trailers.
I do not know the spec on our converter, whether it can handle 240 AC input, but it does isolate the 12v system from any AC faults.
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Old 07-10-2013, 07:56 AM   #62
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Originally Posted by panheaddale View Post
Information in this link cannot answer my question. My question is specifically about Airstream system, not RV generality.
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Old 07-10-2013, 07:56 AM   #63
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Your converters will have a total melt down on 240 VAC input. I had a client recently that had a floating neutral in their 50 amp RV pedestal that sent 240 VAC down one side of their 50 amp service.

The converter burst into flames! They also lost the TV, microwave and computer. The appliances on the other half of the 50 amp breaker box were spared.

It was UGLY !
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Old 07-10-2013, 08:55 AM   #64
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MAN, are we glad you did not plug that in

Actually, out of sheer curiosity...what would happen :O ?
Melted human and aluminum
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Old 07-10-2013, 09:07 AM   #65
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Melted human and aluminum
Now that's a smell you will not forget!
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Old 07-10-2013, 09:23 AM   #66
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The only Airstream trailers with a 240V system live in the UK or Australia. Europe is 220V, although appliances tend to be interchangeable.
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Old 07-10-2013, 09:40 AM   #67
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Quote:
Originally Posted by A W Warn View Post
Information in this link cannot answer my question. My question is specifically about Airstream system, not RV generality.
Found specifically what I was looking for in the 2013 Classic manual
http://www.airstream.com/files/libra...64f21a0d98.pdf see section II-23 (pdf page 71)
As an option on the trailers with two A/C units, Airstream uses a Square D 100 amp distribution panel box with a 50 amp 2 pole main breaker.

Did not realize Airstream offered a factory installed 50 amp service in the newer trailers, in both USA and Canada noted in manual!
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Old 07-10-2013, 09:56 AM   #68
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That was the term from that RV electric link - "floating neutral" - the description of this scared me!!

You could check everything at first at plug in and THEN under more load - it happens :O

I really do not understand it except in the link it made a point to test the outlets under significant load as opposed to not to pick up a "floating neutral"

Lewster - the surge protector will not even prevent the damage in such a scenario??

Should I worry about this "floating neutral" scenario and if so what are reasonable steps for lay folks like us to prevent?
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Old 07-10-2013, 10:02 AM   #69
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Quote:
Originally Posted by PharmGeek View Post
That was the term from that RV electric link - "floating neutral" - the description of this scared me!!

You could check everything at first at plug in and THEN under more load - it happens :O

I really do not understand it except in the link it made a point to test the outlets under significant load as opposed to not to pick up a "floating neutral"

Lewster - the surge protector will not even prevent the damage in such a scenario??

Should I worry about this "floating neutral" scenario and if so what are reasonable steps for lay folks like us to prevent?
Yes it will prevent it and the surge protector will sacrifice itself and will not allow improper current or voltage to pass thru into your trailer.

These unfortunate folks did not have a surge protector.......they do NOW!
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Old 07-10-2013, 10:03 AM   #70
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Quote:
Originally Posted by PharmGeek View Post
That was the term from that RV electric link - "floating neutral" - the description of this scared me!!

You could check everything at first at plug in and THEN under more load - it happens :O

I really do not understand it except in the link it made a point to test the outlets under significant load as opposed to not to pick up a "floating neutral"

Lewster - the surge protector will not even prevent the damage in such a scenario??

Should I worry about this "floating neutral" scenario and if so what are reasonable steps for lay folks like us to prevent?
Is there a plug-in polarity tester for the 220v rv outlet that would show a floating neutral? I do not remember ever seeing one,
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