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05-26-2017, 02:30 PM
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#1
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Junior Member
Join Date: Mar 2017
Location: Fort Myers Florida
Posts: 25
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50 amp 120v or 240v
My family up north is putting a 50 amp plug for our rv and the electrician asked 120v or 240v how do I find that out or do we need to find another electrician who knows what they're doing
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2005 national sea breeze lx class a
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05-26-2017, 02:35 PM
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#2
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Senior Member
Newmar Owners Club Fleetwood Owners Club
Join Date: Jul 2013
Location: DFW
Posts: 1,473
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I think most of the responses will echo the suggestion of finding an electrician who knows the wiring for a 50 amp RV plug because it is quite specific
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2009 Fleetwood Excursion 40E
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05-26-2017, 02:40 PM
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#3
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Oct 2015
Posts: 1,718
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Quote:
Originally Posted by Jamesdl
My family up north is putting a 50 amp plug for our rv and the electrician asked 220v or 240v how do I find that out or do we need to find another electrician who knows what they're doing
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Find another electrician.
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Paul J Stough Iowa
2005 Winnebago Voyage 38J
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05-26-2017, 02:46 PM
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#4
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Senior Member
Join Date: Nov 2012
Location: Keeseville ny
Posts: 648
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Find a better electrician. 220 is 2 - 110 volt lines minimum voltage. 240 is 2 max. Volt lines. The terms are used together. The wiring is the same 2 hot legs on the side a ground on the top . The ground is round. The 3rd prong is flat and on the bottom. This plug is the same as an electric range plug.
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05-26-2017, 03:39 PM
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#5
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Senior Member
Join Date: Aug 2008
Location: Georgia
Posts: 8,638
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Quote:
Originally Posted by Jamesdl
My family up north is putting a 50 amp plug for our rv and the electrician asked 120v or 240v how do I find that out or do we need to find another electrician who knows what they're doing
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2007 Fleetwood Revolution LE 40V
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05-27-2017, 12:32 AM
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#6
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Senior Member
Join Date: Jun 2016
Location: SW Louisiana
Posts: 8,957
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I would find another electrician, but if you stick with this guy tell him 120/240 4 wire and show him the diagram listed above.
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2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates
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05-27-2017, 03:54 AM
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#7
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Senior Member
Join Date: Jul 2014
Posts: 35,444
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There is no " RV " 240 volt 50 amp service. There is just 240 volt 50 amp service.
Plug a big air compressor, electric welder, electric range or your RV in and all is well.
120 volt, 30 amp " RV " service is another story, but not what we're talking about here.
Find a real electrician, this guy may be a helper working under someones license.
http://www.myrv.us/electric/Pg/50amp_Service.htm
The 50-amp*120/240-volt*3 pole 4 wire grounding Service
This*50-amp*service*has 4 wires with two 120-volt HOT feeds.*It is a*misconception*that this 50-amp RV service is something special.*This service is a STANDARD 120/240 50-amp 3 pole with 4 prongs used for*numerous*applications.*
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05-27-2017, 04:21 AM
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#8
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Senior Member
Join Date: May 2014
Posts: 1,368
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Quote:
Originally Posted by twinboat
There is no " RV " 240 volt 50 amp service. There is just 240 volt 50 amp service.
Plug a big air compressor, electric welder, electric range or your RV in and all is well.
120 volt, 30 amp " RV " service is another story, but not what we're talking about here.
Find a real electrician, this guy may be a helper working under someones license.
The 50-amp 120/240-volt 3 pole 4
The 50-amp*120/240-volt*3 pole 4 wire grounding Service
This*50-amp*service*has 4 wires with two 120-volt HOT feeds.*It is a*misconception*that this 50-amp RV service is something special.*This service is a STANDARD 120/240 50-amp 3 pole with 4 prongs used for*numerous*applications.*
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Next he'll be asking if it needs to be three phase.
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Dan & Loretta, US Army Retired Aero Scout Pilot
2012 Fleetwood Providence 42P Class A/DP
Spartan Chassis, 8.9L Cummins 450HP
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05-27-2017, 01:25 PM
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#9
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,794
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A 50A outlet for an RV is two 120VAC 50A circuits! If he hooks it up for 240 you will probably burn up everything in your rig! Either get another electrician that is familiar with this hookup or get the correct wiring diagram to give to this one!
http://www.myrv.us/Imgs/PDF/50-amp%20Service.pdf
http://rv52.com/nice-50-amp-receptacle-voltage-diagram/
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Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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05-27-2017, 02:01 PM
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#10
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Community Moderator
Join Date: Sep 2011
Location: Between the Oceans
Posts: 8,034
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wonder where and how he got his license...
run, get a real electrician!!
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Steven & Polly
2000 Country Coach Intrigue 40' ISC 350
2018 Ford Explorer 4WD
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05-27-2017, 02:31 PM
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#11
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Senior Member
Join Date: Apr 2016
Location: Full Timers
Posts: 355
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Actually the question by the electrician was not that far off base...a 50 amp 120v service is quite doable (and useless). What he needs to see is the business end of a 50 amp RV plug. Then he will know what is needed to serve this RV. The real danger is when an "electrician" wires a 30 amp RV outlet with 220v.
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Dave & Sheryl Rambeau
2011 Itasca Meridian 39'
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05-27-2017, 02:50 PM
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#12
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Senior Member
Monaco Owners Club National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 4,920
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Maybe the OP's interpretation of what his folks interpretation of what the electrician was asking wasn't clear. Just send him the schematic he will be fine.
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2002 Monaco Windsor 40PST 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo, TireSafeGuard TPMS
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05-27-2017, 03:14 PM
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#13
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Senior Member
Join Date: Nov 2005
Posts: 7,400
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Happy Camper--the "standard" warning you are referring to relates to using a 30 amp dryer plug [two 30 amp legs]. Attempting to re-wire dryer for RV 30 amp use will result in 120v being sent down the neutral to the RV--resulting in the magic white smoke--if you don't have a good "surge" protector.....
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Old Scout
2015 IH45 Foretravel
2003 Alpine 40' MDTS [Sold]
New Braunfels, Texas
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05-27-2017, 03:32 PM
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#14
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Registered User
Join Date: Aug 2014
Location: western NC mountains!
Posts: 4,106
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If you are referring to your family 'putting in a 50a plug' as an extension from your home Breaker box, a 50a double pole breaker to insert into the house Main breaker box, the appropriate heavy gauge wire to run from the house to the rv area, and a 50a RV 'box', which is where the RV plugs into. It's pretty simple.
I ran ours without issue. I had place for a 50a double pole breaker in the Main box, connected the heavy duty 50a cable(heavy!) from the breaker, out the Main box, and eventually outside to the 50a RV box mounted on the wall.
The 50a double pole breaker simply provides two separate 120v lines to the RV plug, which in turn provides two separate lines into the coach - 50amps on each line, giving the coach a maximum of 100amps total.
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