wnjj
Cornelius, Oregon
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ktmrfs wrote:wnjj wrote:The breakers in the sub panel do not have to add up to the capacity of the supply. Look at your house main panel as an example to see far more than 200A or whatever size panel you have.
Consider too that 50A at 240V is equivalent to 100A at 120V. So you can put several 20A breakers in there and not have an issue even if all were maxed out.
I also see no reason to turn breakers on and off as use them. The 50A breaker at the house will prevent you from overloading the supply.
On final nit pick: You still have a 240V plug in your barn if the RV plug is a 50A one. The RV just uses it as two 50A , 120V circuits.
50A at 240V CAN be UP TO 100A at 120, but could be less, depends on how the two legs are loaded. Each leg is protected to 50A, either leg goes over 50A and a properly installed 50A/240V breaker will trip both legs.
Yeah I left that pesky detail out about balancing them across the legs. As you fill slots in the panel they will alternate so you have to go out of your way to load them all on one side, but your point is taken.
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Cummins12V98
on the road
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KnowNuthin wrote:Cummins12V98 wrote:
I advise 12GA wire and 20A breaker.
Our barn sub-panel is supplied by a 50@ 2-pole breaker in our main house panel… the circuits original purpose was to have a 240v, 50@ welder outlet in the garage.. I had an electrician repurpose that service to our 50@ RV plug in the barn (no longer a 240v outlet in the garage)…
I currently have one 50@ and 2-20@ breakers in the sub-panel… when we plug in the RV we shut off the. 20a breakers and vice-versa…
The spousal unit is an electrical engineer and as such has assured me EVERYTHING electrical is underrated… I.e. we have more than 50@ going into the barn panel and each of the breakers will handle more than their rated capacity (but will trip in the event of an short/overload)… at least that’s what I heard… when she gets going I understand about every third word, the rest is electrical-eze…
Chances are very good I won’t ever run each of the circuits up to their rated capacity… but I’m the worrying kind…
My intention was to replace one of the existing 20a breakers with a 15a then add a second 15a breaker…. Which would give me 20a + 15a + 15a = 50a (plus the dedicated 50a RV outlet)
Yes? No? Other suggestions?
You actually have two 50A circuits available as 100A total capacity. Add another 20A and forget it.
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
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CharlesinGA
South of Atlanta, Georgia
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For the price, you cannot buy the stuff to make this and it is EXACTLY what the OP needs.
![[image]](https://m.media-amazon.com/images/I/61V4-RBZj-L._AC_SL0800_.jpg)
Charles
'03 Ram 2500 CTD, 5.9HO six speed std cab long bed Leer top and 2008 Bigfoot 25B21RB.. previously (both gone) 2008 Thor/Dutchman Freedom Spirit 180 & 2007 Winnebago View 23H Motorhome.
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time2roll
Southern California
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CharlesinGA wrote:For the price, you cannot buy the stuff to make this and it is EXACTLY what the OP needs. I was about to recommend a $10 power strip from WM with a breaker but this item is perfect. Even looks semi weather resistant.
2001 F150 SuperCrew
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wa8yxm
Davison Michigan (East of Flint)
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time2roll wrote:CharlesinGA wrote:For the price, you cannot buy the stuff to make this and it is EXACTLY what the OP needs. I was about to recommend a $10 power strip from WM with a breaker but this item is perfect. Even looks semi weather resistant.
Fully agree. Exactly what he's looking for and you can't beat the price unless you have a very well stocked "Spares" box. The plug alone is close to the 10 dollar price.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
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pianotuna
Regina, SK, Canada
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CharlesinGA,
Nice find!
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.
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enblethen
Moses Lake, WA
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This looks like a better product then building one. At least it has some overcurrent protection.
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Bud
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toedtoes
California
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pianotuna wrote:CharlesinGA,
Nice find!
Yep! Great find! Wish I had found it! ![[emoticon]](http://www.rv.net/sharedcontent/cfb/images/biggrin.gif "biggrin") ![[emoticon]](http://www.rv.net/sharedcontent/cfb/images/wink.gif "wink")
1975 American Clipper RV with Dodge 360 (photo in profile)
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Both born in Morgan Hill, CA to Irv Perch (Daddy of the Aristocrat trailers)
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KnowNuthin
Centennial, CO
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2005 2500HD D/A CC LB 4X4 being pushed by:
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Dutch_12078
Winters south, summers north
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Heh! Five pages of posts for a question that was answered on the first page...
Dutch
2001 GBM Landau 34' Class A
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