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Lars(wi) 
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 Topic: Another Juiceatrition question…….
Posted: 19 Jan 2025 at 8:25pm |
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Have ‘wild hair’ question; is it possible(and safe) to create a 220v plug on a cord, but fed from 2 separate 110v feeds? Each 110v feed would plug into 2 separate 110v outlets, each of those outlets feed from each side of the circuit breaker panel. Clear as mud?
Edited by Lars(wi) - 19 Jan 2025 at 8:39pm
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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steve(ill)
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Posted: 19 Jan 2025 at 10:30pm |
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yes, that works as long as you get TWO feeds off of TWO differnt input lines.. They dont have to be on OPPOSITE sides of the breaker box.. THey can be two next to each other on the same side... THink of a 220v breaker... the INPUT lugs alternate 1-3-5-7 and 2-4-6-8 as you count from TOP to BOTTOM on the SAME SIDE of the box.
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steve(ill)
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Posted: 19 Jan 2025 at 10:42pm |
you know it is BETTER to have a double breaker that is 220v, instead or two 110 breakers.. What if one of the 110 opens ?? Then you have 110 on ONE LEG of your 220 machine... Not a reall good plan.... but YES... it will work.. Both breakers should be the same amps... You need ONE leg RED and ONE leg BLACK... see below.. they can be two on the same side one below the other... they can NOT be across from each other as that is the same LEG.
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Lars(wi)
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Posted: 19 Jan 2025 at 10:52pm |
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Your right Steve, I didn’t phrase it quite correctly, feed from both legs is what I meant. The reason I asked, is we may possibly make a trip later this spring to my Mothers house, and park the RV in her driveway close to the house. No 30 amp, or 50 amp outside. Figure to get 10/2 romex and a 50 amp outlet and box, with 2 cords plugging into 2 different outside 110 outlets, my brother is going send me picture of the breaker panel.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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Gary
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Joined: 13 Sep 2009
Location: Peterborough,On
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Posted: 20 Jan 2025 at 1:03am |
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So you have an RV and you want to assemble an RV Receptacle similar to what you would find in an RV Park.
You mention 50 amp so your Trailer must have the Standard Marine 50 amp Plug.
The typical female Receptacle that receives the 3 Prong Male Prongs and the metal contact Grounding bump on the side.
You push the 50 amp Marine Plug in to the Trailer Receptacle, then twist it Clockwise to lock it in place.
The first thing to realize is neither a 30 amp nor a 50 amp RV Power Chord is classed as a 220 Volt Power.
The 30 amp Chord is a 30 amp single circuit Feed to your Trailer.
The 50 amp Marine Plug Chord supplies more than 3 times the amps.
This 50 amp Marine Plug consists of 2 completely separate 50 amp circuits with wire gauge suitable to carry 50 amps each.
The 2 circuits do share the White Neutral and the Green Ground.
The three prongs of the 50 amp male plug are 2 hot and 1 neutral.
If I understand correctly, you are asking if you can plug in to 2 separate and
EXISTING 110 volt wall receptacles ( which would need to be fed from 2 separate Breakers}
Yes it could be done, connecting your live Feed from the Black Wire Live Feed and connect to each of the proper hot terminals in the 4 Terminal Female 50 amp receptacle.
But you must remember you only have 2 circuits at 15 amps each, fed by 2 separate 15 amp Breakers.
One other point is an RV Panel is totally different from the typical House Panel as illustrated above.
An RV Panel has the 2 stacks of 110 volt Breakers, one above the other, with the 50 amp Feed at the butted ends in the middle.
All the dozen or so 12 volt fused circuits are across the bottom.
Owning, using, and Servicing an RV Trailer for over 40 years, you learn a lot.
Good Luck
Gary
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DMiller
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Posted: 20 Jan 2025 at 5:34am |
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Without being able to know which outlet is Off Phase to another are playing mumbly peg with electrical equipment in that RV. Better off buying a breaker and having a 240v outlet wired outside permanently and to code.
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jaybmiller
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Posted: 20 Jan 2025 at 6:32am |
gee, you got me real curious about 'RV wiring '... Are they wired for 240 v or 120v ? BIG difference. If 240, you would have appliances that need 240 volts. Only normal ones i know are electric stove and clothes dryer. Everything else is 120....lights, radios,steraos, etc.
So....really need to KNOW what that RV internal wiring is.
One clue, check the RV main panel, are there ANY 'double' breakers ? A '240' breaker will have a connecting 'bar' to join the two levers of the breakers.
off to grab a coffee and surf the web.....be kinda nice to KNOW what the RV wiring is...
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3 D-14s,A-C forklift, B-112
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WF owner
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Posted: 20 Jan 2025 at 6:41am |
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As Gary said, a 50 amp RV is really just two 110 circuits. Nothing in an RV runs off 220 (240) volts. Theoretically, IF IT IS AN RV, the two 110 legs would not have to be "in-phase".
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jaybmiller
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Posted: 20 Jan 2025 at 6:48am |
hmm, I was thinking all 120 v appliances BUT some RVs have A/C, washer/dryers BUT it really makes sense that all 'should' be 120. Saves a LOT of headaches when building and servicing.
So really they're NOT '240 volt' but TWO, feeds of 120 volt.
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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WF owner
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Posted: 20 Jan 2025 at 6:51am |
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All true "RV" washer-dryers and AC units are 120 volts.
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DMiller
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Posted: 20 Jan 2025 at 8:33am |
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Are some that will accept Household laundry Units and not all RV AC are 120v.
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jaybmiller
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Posted: 20 Jan 2025 at 9:04am |
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yeesh, sure hope the RV HAS a 'power panel wiring diagram' !!! seems to be maybe yes, maybe no, some do, some don't.......sigh
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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steve(ill)
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Location: illinois
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Posted: 20 Jan 2025 at 9:29am |
all depends on what appliances you have in the RV........
Yes, some RVs have 240-volt appliances, but it's not common. These appliances are usually clothes dryers and air conditioner. - RVs typically have 120-volt AC and 12-volt DC electrical systems.
- Some RVs have 240-volt appliances, like clothes dryers and air conditioners, if they have a 50-amp power cord.
- A 50-amp power cord provides 240 volts of power, split into two 120-volt circuits.
- This allows for more flexibility and can support multiple high-demand appliances.
- 240-volt appliances won't work on 30-amp/120-volt campsites without a major investment in batteries and inverters.
Edited by steve(ill) - 20 Jan 2025 at 9:31am
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Like them all, but love the "B"s.
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Lars(wi)
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Posted: 20 Jan 2025 at 9:38am |
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This particular RV has the standard 4 prong 220v plug. The circuit breaker panel has the 50 amp double throw breaker in the center, and a row of breakers going horizontal both directions. 12v fuses in the lower portion of the box(panel) the oven/stove top are propane, refrigerator is 110v or 12v. Lights are 12v, wall outlets are 110v, furnace is propane. The rooftop ac units are 110v which also have the capability of ‘heat’ is desired. Water heater can be 110v, or propane.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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jaybmiller
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Posted: 20 Jan 2025 at 9:46am |
re: a row of breakers going horizontal both directions.
are ANY of those breakers 'ganged' ( connected or pinned together ) ? if so then THAT applicance is 240 volt,
in NO, then everything is 120 volt.....
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Lars(wi)
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Posted: 20 Jan 2025 at 10:32am |
 jaybmiller wrote:
re: a row of breakers going horizontal both directions.
are ANY of those breakers 'ganged' ( connected or pinned together ) ? if so then THAT applicance is 240 volt,
in NO, then everything is 120 volt.....
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Just the center two 50 amps are ganged together
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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WF owner
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Posted: 20 Jan 2025 at 10:43am |
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I currently own my third 50-amp fifth wheel and they have all had the same configuration that Lars said. There is one 50-amp double pole breaker, similar to a main breaker in your house and all the other circuits, including both AC units and the circuit for the washer/dryer are 110 or 12 volt.
Edited by WF owner - 20 Jan 2025 at 10:56am
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WF owner
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Posted: 20 Jan 2025 at 10:54am |
I just called a friend who has been an RV technician for many years.
He said he has never seen an RV air conditioner or an RV washer/dryer unit in the United States that is 240 volt. He says that 240 volt is common in some foreign countries and there may be some that are imported, but he knew of none that are built in the USA.
He also said some people install residential washer/dryers in RV's. He said he doesn't know of any rigs that the washer/dryer circuit is factory wired for 240 volts from the factory (unless it's an ultra high end rig), but he had never seen or heard of any.
Edited by WF owner - 20 Jan 2025 at 10:58am
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DMiller
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Posted: 20 Jan 2025 at 11:38am |
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Take a tour of newest Palace Fifth Wheels, AC on last I saw was 120v, however the Alternate Heat Resistive element was 240v double gang 30A, Washer of course 120v, Dryer was Home Sized and 240V, all in a 50A RV panel. One Road Palace also had a Demand flow Tankless Water Heater, Twin 30A Ganged Breakers for elements.
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Gary
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Posted: 20 Jan 2025 at 9:21pm |
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Dave
I googled to find the Palace 5th wheel RV you mentioned, but only came up with a 'one of' built in Australia in 1949.
Do you have a Link?
Gary
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WF owner
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Posted: 21 hours 19 minutes ago at 5:23am |
Gary wrote:
Dave
I googled to find the Palace 5th wheel RV you mentioned, but only came up with a 'one of' built in Australia in 1949.
Do you have a Link?
Gary |
Same here.
I also Googled "RV's with 240 volt" and came up with this link that explains it much better.
Edited by WF owner - 21 hours 10 minutes ago at 5:32am
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