Installing RV 50 amp recepticle

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  #1  
Old 06-02-05, 05:22 AM
scatterug
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Installing RV 50 amp recepticle

I need to wire a 50 amp 110V recptiale for an RV. I know how to wire it for 220V. Is it the same for 110? Niether the receptilce nor the circuit breaker had instructions. Maybe I did not xplain the situation good enough. There are four wires on the recepticle. Two places to connect wires on the breaker. If I am correct, the red and black go to the breaker. white and ground to buss ground. That sends 220 to the recepticle. Does the receptilce and feed wire break it back to 110 as it goes into the motor home?
 

Last edited by scatterug; 06-02-05 at 06:42 AM.
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Old 06-02-05, 05:37 AM
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3 holes, 3 colored screws, ground is the green screw and goes to the hole that is kinda round. The hot (black wire) goes to the brass colored or dark colored screw and goes to the short slot. The nuetral (white wire) goes to the silver or light colored screw, it is the longer slot.
 
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Old 06-02-05, 08:11 AM
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Your description of the plug and breaker indicates you are wirng for 240v not 120v. Your description is correct however.
The voltage will only 240 between the black and red. Between black/white and red/white will be 120volts.
 
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Old 06-02-05, 08:27 AM
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I thought RVs commonly used 30-amp 120-volt circuits. I suggest we get all this conflicting information well sorted out before beginning.
 
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Old 06-02-05, 09:40 AM
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Take a look at this Plus & Receptical Chart and tell us what receptical you have and what plug the RV's cord uses. Identify them based on the NEMA number (ie, the first receptical pictured is a NEMA 1-15R & its corresponding plug is NEMA 1-15P). Note that numbers ending in R are recepticals (female), and P's are plugs (male).
 
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Old 06-02-05, 01:38 PM
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Your new description sounds like a 125/250 V recepticle, used for 125 and 250V loads. terminals should be marked W X Y G. White wire on W term and neutral bar in panel. Red and Black wires on X and Y terms and on breaker. Green wire on G term and ground bar in panel.
 
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Old 06-02-05, 03:23 PM
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Jedi is correct. The OP stated a 50 amp,120 volt circuit....yet he has a 4 hole receptacle.
This is a 125/250v, 50 amp, 4-wire recetpacle (NEMA 14-50R). Big motor homes have them. I have done a few.
 
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Old 08-27-08, 08:07 PM
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50 amp recepticle

I am trying to do the same thing except for a generator. Do I wire this recepticle the same way?

Thanks,

JB
 
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Old 08-28-08, 07:53 AM
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RV Receptacle

Here is a web site with pictures/diagrams:

http://www.myrv.us/electric/

Scroll down to see the 50 amp. Hope this helps.
 
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Old 08-30-08, 11:10 PM
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maybe a slight clarification is needed.

RVs are set up for either 30A or 50A.
The 30A, 120 volts, connection is by far the most common, and also less confusing.

The 50A RV connection is really a 50A 220V connection, but
the two legs are split in the motorhome, so there is only 120V running around.

Hope this helps.
 
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Old 08-31-08, 11:18 AM
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Originally Posted by billybard View Post
...
The 50A RV connection is really a 50A 220V connection, but
the two legs are split in the motorhome, so there is only 120V running around.
That's typical, but some 50A RV's do have some 240V appliances.

High-end RV's use a lot of power. Scatterug should be sure to use large enough wire to avoid excessive voltage drop at the RV.
 
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Old 08-31-08, 01:35 PM
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No, the 50A Rvs use a 120/240V connection, not 240 only, using a NEMA 14-50 plug.

Some motorhomes and allow you to jumper the X and Y connector to supply it from one supply leg.
 
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Old 08-31-08, 06:56 PM
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Originally Posted by cathlabrunner View Post
I am trying to do the same thing except for a generator. Do I wire this recepticle the same way?
Explain what you mean here. WHAT are you trying to wire for your genny? The receptacle right on the genny itself?
Or a male inlet plug for a transfer switch?
What?
 
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