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50 Amp connection

WETSNAIL
Explorer
Explorer
I am changing a 30 amp outlet at my home to a 50 amp for shore power to my MH. Is the 50 amp pig tail hooked to 120 or 240. I know the 30 amp was 120.
thanks, Cork
10 REPLIES 10

D_E_Bishop
Explorer
Explorer
I don't always agree with 2oldman but his links and RoyB's drawings both answer the question asked.

Between reading those links and looking a RoyB's drawings you really get to know how it works.
"I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to go". R. L. Stevenson

David Bishop
2002 Winnebago Adventurer 32V
2009 GMC Canyon
Roadmaster 5000
BrakeBuddy Classic II

ScottG
Nomad
Nomad
To actually answer your question: The 50 amp is connected to 240V.

dougrainer
Nomad
Nomad
WETSNAIL wrote:
I am changing a 30 amp outlet at my home to a 50 amp for shore power to my MH. Is the 50 amp pig tail hooked to 120 or 240. I know the 30 amp was 120.
thanks, Cork


ALL RV service is 120 volt. What you have asked is a common mistake novices make. You have 4 pins as someone has posted above.
1. Ground(just like your 30 amp)
2. Neutral (just like your 30 amp)
3. HOT Leg 1 (120 volts just like your 30 amp)
4. Hot leg 2 (120 volts from the OTHER phase of your MAIN 100 or 200 amp home breaker panel. This you will have to run a new wire for this leg . 4 wires total. You will also see from the previous post the GAUGE that each of the 4 wires MUST be to transmit 50 amp service safely.
5. This is where novices get confused----120/240 service. It IS 120 on each leg into the RV and no where in the RV do you have 240 volt plugs(they are all 120 volts). BUT, when you measure the line voltage between the 2 HOT legs, you will read 240(double your line voltage). THIS is what confuses novices. This is normal but separated by the Breaker panel. When you measure from Neutral to either HOT leg you will read 120. Doug

wa8yxm
Explorer III
Explorer III
If the wires are in conduit Big Katuna has the way I would do it.

If it is Romex.. Well, Depends on the length of the run.

Another alternative is to live with only 30 amps at home and use a dogbone adapter...

If you are USING the MH as a Guest room, in the heat of summer, that will not work as you will need both A/C's but if its only for storage and set up/take down,,, Should be OK.
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
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times

Big_Katuna
Explorer II
Explorer II
A shortcut money saver is just run another #8 and put in a new double pole 30a breaker and wire in the 50a plug. While you can't run run every single item, a hair dryer and make coffee at the same time, you can easily run both ACs and your fridge.
My Kharma ran over my Dogma.

1492
Moderator
Moderator
Moved from Forum Technical Support

Old-Biscuit
Explorer III
Explorer III
WETSNAIL wrote:
I am changing a 30 amp outlet at my home to a 50 amp for shore power to my MH. Is the 50 amp pig tail hooked to 120 or 240. I know the 30 amp was 120.
thanks, Cork


Have you pulled new wire?
Need 4 wires (2 hots, 1 neutral, 1 ground) #6 ga.

Can't just change outlet. 30A probably has only #8 ga.
Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31

RoyB
Explorer II
Explorer II
Here are a couple more comments...

A neat google images drawing showing the camp ground wiring of a typical 50A and 30A/20A PEDESTAL connection



Also BEFORE YOUR PLUG IN YOUR 50AMP TRAILER make sure you duplicate this meter reading exercise. If you DO NOT DUPLICATE these readings with a multimeter you may BURN UP several high dollar appliances.



Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS

time2roll
Nomad
Nomad
The NEMA 14-50 is 120/240 service. Connect with 6/3 romex or equivalent. Requires 50a, 2 pole, 240v breaker.

click the 50a link on the top left for full details:
http://www.myrv.us/electric/

2oldman
Explorer II
Explorer II