50 Amp to 30 Amp

[Brantel]

Originally Posted by skids

The last schematic makes a lot of sense except for that balanced loading. The breaker is double pole where if one side overamps, the other side is physically connected to also trip.

The example states it is a double pole breaker. I did not show the cross tie for clarity in any of the examples. If both legs are at 50 amp as in the example, nothing trips. You are correct, if either leg ever goes above 50 amps, both will trip due to them being mechanically tied together.

[firestation12]

Chusckster57- Can you identify which high end MH uses 240V dryer or induction cooktop?

Answer from Cavie- DRV 5er, Newmar Essex, King Aire, come to mind real quick.


From me- DRV's generator offering is an Onan 5500. The Splendide washer/dryer XC-2 combination is a 120 volt offering. I'm not finding anything on the DRV listing an appliance using 240 volts.
http://www.splendide.com/service/WD2100XC_IOM3.pdf
I checked with a good friend of mine who owns a 2013 Newmar Dutch Star that describes that breaker as the main for the buss as Cavie states, but since none of the other breakers are 2 poles, the effective distribution of 50 amps of shore power is the same whether the breaker arrangement is AAABBB OR ABABAB etc.. As for the argument Cavie is trying to make, consider this: each 50 amp leg is capable of 6,000 watts (50amps X 120volts =6,000 watts X 2 legs = 12,000 watts) thus the cumulative wattage that is available to the camper is 12,000 watts. Cavie can argue til he's blue in the face it is incorrect to state the camper has 100 amps available power, but anyway you add it, 12,000 watts is the available power whether its computed 50 X 120 + 50 amps X 120 V = 12,000 watts or 100 amps X 120 V = 12,000 watts.

[cavie]

Well, you can lead a horse to water but.................................

[chuckster57]

Dutch star is not in the same price range as King aire. I’ll wait for the day a “high end” MH comes in for work and I’ll look for myself. Up to now, I HAVE NOT seen any 240VAC appliance in ANY RV.

I’m not saying there isn’t any, just that I haven’t seen any. I worked on high end Tiffen Mh’s (phaeton, Bus) and there wasn’t any.

[sourdough]

Originally Posted by chuckster57

Dutch star is not in the same price range as King aire. I’ll wait for the day a “high end” MH comes in for work and I’ll look for myself. Up to now, I HAVE NOT seen any 240VAC appliance in ANY RV.

I’m not saying there isn’t any, just that I haven’t seen any. I worked on high end Tiffen Mh’s (phaeton, Bus) and there wasn’t any.

Chuck it might take a curb bit on this one to bring him to water......

[cavie]

Three examples I found with a little Google search.

Well.... My induction cook top is 220volt so I wouldn't think it would be a problemtp run a 220 line from the braker box to the dryer. Assuming you have the space in the braker box.
__________________
Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH, 2013 Honda CRV
"When the time comes to look back, make sure you'll like what you see"

--------------------------------------------------------------------------------------We have a gas cooktop but a 220 V stacked dryer in our rig. Came that way from CC as an option. Requires a 12.5 KW gen to equal a 50 amp RV service.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition

--------------------------------------------------------------------------------------

Yes, I have a Wolf inducting and it is definitely 220-240. I carry a 110 portable for those times we are on 30 amp.
__________________
Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH, 2013 Honda CRV
"When the time comes to look back, make sure you'll like what you see"

[sourdough]

Originally Posted by cavie

Three examples I found with a little Google search.

Well.... My induction cook top is 220volt so I wouldn't think it would be a problemtp run a 220 line from the braker box to the dryer. Assuming you have the space in the braker box.
__________________
Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH, 2013 Honda CRV
"When the time comes to look back, make sure you'll like what you see"

--------------------------------------------------------------------------------------We have a gas cooktop but a 220 V stacked dryer in our rig. Came that way from CC as an option. Requires a 12.5 KW gen to equal a 50 amp RV service.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition

--------------------------------------------------------------------------------------

Yes, I have a Wolf inducting and it is definitely 220-240. I carry a 110 portable for those times we are on 30 amp.
__________________
Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH, 2013 Honda CRV
"When the time comes to look back, make sure you'll like what you see"

Do these "quotes" have anything to do with factory installed specs or just folks working/modding 7-9 year old RVs?

[firestation12]

Originally Posted by sourdough

Do these "quotes" have anything to do with factory installed specs or just folks working/modding 7-9 year old RVs?

My thoughts exactly! I'm with sourdough, Chuckster57 and flybouy on this one! I performed a Google search of Cavie's Google search and came up with some questions and comments.....Cavie's first Google return from- Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH "My induction cook top is 220volt so I wouldn't think it would be a problemtp run a 220 line from the braker box to the dryer. Assuming you have the space in the braker box.


Here is the cook top they claim to have- "Yes, I have a Wolf inducting and it is definitely 220-240. I carry a 110 portable for those times we are on 30 amp."


FYI, Wolf is a residential/commercial brand of appliances. This is not OEM Tiffin install. I looked up the brochure for the 2014 Tiffin Phaeton 42 LH, there was no mention of an induction cooktop or anything made by Wolf, as an option. Here is a link to that brochure https://library.rvusa.com/brochure/2...eton_specs.pdf


As for this person' claim: 2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA, SKP
"We have a gas cooktop but a 220 V stacked Dryer in our rig. Came that way from CC as an option. Requires a 12.5 KW gen to equal a 50 amp RV service."



That must be SOME DRYER in their rig that requires a 12.5 KW generator! The brand name was not mentioned, so I researched the most common one used in the RV industry....Splendide. The specifications for all 10 models listed on their website are listed as 120 volts with a current draw of 11 to 13 amps. http://www.splendide.com/service/docs.html



Bottom line here is, this a Keystone Forum. Motor Home topics can be found at other manufacture specific sites. The 50 amp shore power to keystone campers, provides 12,000 watts of power. There aren't any horses here that need help being lead to water or drinking it.

[cavie]

Originally Posted by sourdough

Do these "quotes" have anything to do with factory installed specs or just folks working/modding 7-9 year old RVs?

Proof for the naysayers in this thread that do not believe there are 240 cooktops and dryers in an RV from the factory. One is 2009 and a couple of 2014. Apparently, they have been around for a while. I'm done with this thread. It's all yours.

[flybouy]

I guess to me at least is the question, at least in my mind remains; "What the hell difference does it make?" The bottom line is answer the OP's question. If the OP doesn't know if the dog bone will work then I doubt he will garner the necessary info from a few posts to digest the electrical theory. The fact id, 12,000 watts is available on a split phase 50 amp connection. Connect a 30 amp camper to that and it will still be limited to 3,600 watts by the 30 breaker in the camper.

Sorry for the interruption, continue to go about peeing in the snow to prove whatever it is you need to prove.

[rhagfo]

Originally Posted by sourdough

OK....50 + 50 = how many total amps available to the RV??

Edit: I fully understand what you are saying but it's misleading.
"you have 50 amps available" is incorrect when referencing the total amperage available to the RV. Exceed ONE of the 50A legs (of which 2 are available) and you will lose both legs, until then you will definitely be able to use over 50A. Am I wrong?

Originally Posted by cavie

50. I am a 50-year master electrician. I know what I am talking about. If you run 1 leg over 50 amps then you will have NO amps available. If you want to talk electric then learn the language.
__________________
2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.

Well I am NOT a Master Electrician, but if you have a double 50 amp breaker each side can draw up to 50 amps without tripping both sides. That means you can pull 50 amps on EACH side/leg, for a total of 100 amps of 120 volt devices. This assumes that the loads are balanced across both legs.
A standard RV 50 amp panel, the 240 volt/ 50 amp is split at the main breaker. 120 volts at 50 amps goes left, and 120 volts at 50 amps goes right.
You can tap 240 volt at the main using a 2-Pole Quad Tandem Circuit Breaker.
I have been running a RV Comfort Systems "Cheap Heat" electric add-on to our furnace it is on a 240 volt 30 amp circuit for over four years. It gives 5,000 watts of heat on 50 amp, 240 volts, and 1,800 watts on 30 amp 120 volt.

[chuckster57]

I am thinking this thread has about ran out of juice..I am going to throw the switch and close it. anybody think I am wrong feel free to PM me with a VALID reason to unlock it and we can discuss it.