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Thread: 220VAC Moochdocking Adapter

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    220VAC Moochdocking Adapter

    We'll be moochdocking at a friend's house in Florida soon. He has a 220VAC dryer outlet available for our use, should we be able to use it.

    Has anyone on here successfully fabricated an adapter that would allow connection of our 110VAC 50A RV system to a household 220VAC outlet? If so, can you kindly share the wiring diagram?

    Any other tidbits of information you can offer up are appreciated. I don't know if he has two separate 15A circuits available, but if he does, that's a possible option. However, the preference is the 220VAC solution, if it can be done.

    TIA!
    Chuck & Madelyn
    2021 M399th
    2020 Ram 3500 Laramie 4x4 MC DRW

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    You can not make 220V by combining two 110s. What you want to do is easy if you know what you are doing, dangerous to you and your rig if you do not.

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    Quote Originally Posted by BobLandry View Post
    You can not make 220V by combining two 110s. What you want to do is easy if you know what you are doing, dangerous to you and your rig if you do not.
    I don't want to make a 220V connection. I'll have a 220V dryer connection available that I'd like to split into a 110V 50A RV style connection.

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    Quote Originally Posted by Chuck.N View Post
    I don't want to make a 220V connection. I'll have a 220V dryer connection available that I'd like to split into a 110V 50A RV style connection.
    You probably can with some caution.

    Dryer plugs are a little confusing because there are two options.

    They used to be 3-wire 120/240 with ground and neutral connected together. This has led more than a few poorly informed folks to wire the outlet wrong, and you’ll also see some wired this way with the ground wire straight to a water pipe. You are kind of on your own determining if you have the right wiring on these.

    Since about 2000, there has been a switch to 4-wire 120/240 outlets. These are much less likely to be mis-wired.

    If he has two 15A (or 20A) circuits available, you can use each of those to power one leg of your rig, but in most cases you’ll be limited because most items in the RV are on one of the legs.
    John & Kathy
    2014 F250 Lariat FX4 6.2L SBCC
    2014 Reflection 303RLS
    SW Indiana

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    Site Sponsor Jerryr's Avatar
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    If he has a properly wired 4-wire 14-30R dryer outlet you can use this adaptor. https://acworks.com/products/ev-adapter-ev1430ms-018

    The risk is the outlet MUST have a separate NEUTRAL and GROUND wired at the outlet. 4-wire dryer outlets were required on new construction starting around 1996. Before that 3-wire dryer outlets were the norm and they did not have a neutral. So if the house was built before 1996 you may be out of luck.

    I use that adaptor at my house to connect my 50a Reflection and can run almost everything on the RV without exceeding 24 amps per leg. I just don’t r in the. Water heater on electric and run it on propane only.

    If the dryer outlet is a 3-wire outlet or a 4-wire outlet without a neutral it will not have a Neutral and that will destroy the RV appliances.
    Last edited by Jerryr; 03-17-2021 at 09:17 AM.
    Jerry & Linda
    With Cleopatra our Jack Russell & and JR our Amazon Parrot
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    Site Sponsor Jerryr's Avatar
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    Just to add on, my 1996 built house had a 3-wire dryer outlet. Fortunately they ran 10-3 w/ground Romex from the breaker box to the outlet. I had the wires reconnected to a 4-wire 14-30R receptacle reconnected using current code, connecting the white to neutral and bare to ground on both ends.
    Jerry & Linda
    With Cleopatra our Jack Russell & and JR our Amazon Parrot
    2017 Reflection 337RLS, Build Date 01/2017, Titan Disk Brakes, Goodyear G614s 235/85/16 G Rated tires
    2020 F-350 Lariat Ultimate 4x4 PSD SRW Short Bed, 3483 lb Payload, Factory 5th Wheel Prep, Bedrug Bedliner, Andersen Ultimate II Aluminum 5th wheel hitch
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    Seasoned Camper Chewwi's Avatar
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    Quote Originally Posted by Jerryr View Post
    . . . 4-wire dryer outlets were required on new construction starting around 1996. Before that 3-wire dryer outlets were the norm and they did not have a neutral.
    . . .
    If the dryer outlet is a 3-wire outlet or a 4-wire outlet without a neutral it will not have a Neutral and that will destroy the RV appliances.
    Properly wired 3 wire dryer connections DO indeed have a neutral connection. They just don’t have a separate ground. The ground connection on the dryer was bonded to the neutral connection, so that the single wire served both functions—as the neutral current pathway and as the grounding pathway.


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    Thanks for all the comments and ideas. I found this on Amazon, and it looks like it might work. I sent it to my friend to compare to the dryer outlet.

    https://www.amazon.com/Conntek-EV143.../dp/B00STD8CXC
    Chuck & Madelyn
    2021 M399th
    2020 Ram 3500 Laramie 4x4 MC DRW

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    Quote Originally Posted by Chuck.N View Post
    Thanks for all the comments and ideas. I found this on Amazon, and it looks like it might work. I sent it to my friend to compare to the dryer outlet.

    https://www.amazon.com/Conntek-EV143.../dp/B00STD8CXC
    This will allow you to plug in your RV, but unless you do something to address the voltage from 240V down to a 110V you will fry appliances, motors, etc in your RV. YOU REALLY NEED AN ELECTRICIAN who knows about RV voltage.

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    Setting Up Camp
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    An RV does not use 240v internally but a 240v 50amp RV outlet is 240V. If the dryer outlet is 4 prong and it is wired correctly you should be good to go.

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