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02-19-2011, 08:15 PM
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#1
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4 Rivet Member
1969 29' Ambassador
1985 31' Excella
1969 29' Ambassador
Crescent
, Oklahoma
Join Date: Jan 2010
Posts: 272
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converter size
I am needing a new converter, I was thinking an Intela-power 9200 45amp. Is that enough amps?
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02-19-2011, 08:18 PM
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#2
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Rivet Master
2005 25' Safari
Trabuco Canyon
, California
Join Date: Apr 2006
Posts: 866
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If it were mine I'd do an energy audit. Add up the wattages (convert to amps) of the lights (by far the biggest draw), furnace, water pump, fridge 12 volt, water heater control, etc. 1141 lamps take 18 watts.
Probably a little overdraft with it all running simultaneously (because you typically don't) is OK, but I'd shoot to cover it completely. My trailer uses 55 amp converter and I can't overdraw it with everything lit and on. The lights alone draw nearly 400 watts (at least before I converted to LED).
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02-19-2011, 09:54 PM
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#3
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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It's Plenty
Most trailers that are in the age group you have probably don't have a converter larger than 30 amps. Is the original still in the trailer? If it is; you should be able to check the size of the largest fuse. I would think that 45 amp would be plenty if you are just replacing the original.
The lights in the trailer draw 1.5 amps per bulb, not per fixture but per bulb. The ceiling fans around 4 or 5 amps, furnace blower maybe 6 amps. I think you would have a problem getting all to add up to 30 amps, let alone 45.
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02-20-2011, 06:31 AM
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#4
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Addicted
1971 27' Overlander
Currently In: Skowhegan
, ME
Join Date: Jul 2010
Posts: 703
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I just installed the same in my 71' Overlander, and everything seems to be fine with everything turned on and running (of course, our is completely original, so your mileage may vary).
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02-20-2011, 06:38 AM
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#5
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3 Rivet Member
Currently Looking...
jackson center
, Ohio
Join Date: Jan 2011
Posts: 159
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Airstream currently installs 55amp converters;so if you are updating your trailer you would want the upgrade to have flexibility not just be on the edge of what you may need.Airstream uses Parrallax and Magnetek converters.
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02-20-2011, 07:41 AM
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#6
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Maniacal Engineer
1971 25' Tradewind
Lopez Island
, Washington
Join Date: Jan 2010
Posts: 1,244
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There are a couple of advantages to having a slightly larger converter than that needed to simply run the trailer:
- In cases when you've hooked up w/ low batteries, they will still change at a reasonable rate even when you're using juice in the trailer.
- If you have fitted dual batteries, having a bit more charging current could speed things up - handy if you're recharging w/ a generator.
If you don't boondock, your batteries essentially never discharge and none of this matters anyway.
- Bart
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02-20-2011, 04:43 PM
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#7
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Rivet Master
Commercial Member
New Borockton
, Alabama
Join Date: Sep 2002
Posts: 1,593
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With only one battery, 45 should be fine on a 29 footer. Two batteries and I would consider 55 amps depending on how you use your Airstream.
__________________
Randy...Converters, Inverters, Trimetric, Surge Protectors, Zamp, Smartplug, AGM Batts
888-828-1893
Bestconverter.com
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02-20-2011, 04:48 PM
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#8
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Rivet Master
1968 24' Tradewind
Oxford,
, Mississippi
Join Date: May 2009
Posts: 1,564
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I purchased an Iota converter from Randy, great product and great service.
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__________________
Bruce & Rachel
__________________
68 Trade Wind
2001 Toyota Tundra
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02-20-2011, 05:58 PM
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#9
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Rivet Master
1969 31' Sovereign
Broken Arrow
, Oklahoma
Join Date: Jan 2003
Posts: 1,455
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Yes that would do the job.
I think the 9260 is the best bang for the bucks I went with the 9260 or could have been a 9265!
__________________
Garry
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02-20-2011, 06:35 PM
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#10
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Rivet Master
Commercial Member
New Borockton
, Alabama
Join Date: Sep 2002
Posts: 1,593
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The PD units are pretty good. They don't have the high charge voltage like the Iota's and don't deliver their full rated output during bulk but I still like them. For off grid boondocking and/or fast complete charging, the Iota has the edge.
__________________
Randy...Converters, Inverters, Trimetric, Surge Protectors, Zamp, Smartplug, AGM Batts
888-828-1893
Bestconverter.com
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02-20-2011, 06:52 PM
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#11
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4 Rivet Member
1969 29' Ambassador
1985 31' Excella
1969 29' Ambassador
Crescent
, Oklahoma
Join Date: Jan 2010
Posts: 272
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Thanks for the input, I purchased a 9200 45amp. I only have one battery, am mostly original, and really dont boondock. My old one was a 30amp. Thanks again!
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