Good Sam Club Open Roads Forum: Travel Trailers: 30 amp plug question
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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > 30 amp plug question

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thiefsnip3r

USA

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Posted: 08/08/19 02:00pm Link  |  Quote  |  Print  |  Notify Moderator

Hey everyone,
I purchase my first travel trailer the other day so I'm very new to owning one and maintenance. I noticed where the plug is located on my trailer the door panel says it is a 30 amp plug 110 service. The cord is a 110 cord not a 30amp plug. I asked the person i bought it from and he said the original owner of the trailer did this.
The previous owner said he never used the AC unit (which i believe is the only reason for the 30amp plug). I was wanting to be able to use the AC. Is it as much as cutting the cord and attaching a 30amp cord end on? (it looks like this was done previously as the 110 cord has an abundance of electrical tape on the cable already in a location.

afidel

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Posted: 08/08/19 02:30pm Link  |  Quote  |  Print  |  Notify Moderator

Before attaching a 30A plug make sure they didn't replace the cord with a thinner gauge cord, 30A should be at least 10 gauge.


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brant_c

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Posted: 08/08/19 02:55pm Link  |  Quote  |  Print  |  Notify Moderator

Can you post a picture?

dodge guy

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Posted: 08/08/19 02:56pm Link  |  Quote  |  Print  |  Notify Moderator

Pictures would help. If they just cut the end off then yes a new 30A plug will take care of it. Are you sure they didn’t use a 30A-15A adapter and taped it together so it wouldn’t come apart?


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theoldwizard1

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Posted: 08/08/19 03:10pm Link  |  Quote  |  Print  |  Notify Moderator

thiefsnip3r wrote:

Is it as much as cutting the cord and attaching a 30amp cord end on? (it looks like this was done previously as the 110 cord has an abundance of electrical tape on the cable already in a location.

That is it !

The plug you want is called a NEMA 30-TT.

enblethen

Moses Lake, WA

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Posted: 08/08/19 03:53pm Link  |  Quote  |  Print  |  Notify Moderator

This is what a 30 amp cord body looks like.
It should have a 3 wire #10 cord going to the rig.


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myredracer

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Posted: 08/08/19 06:43pm Link  |  Quote  |  Print  |  Notify Moderator

Do you have what's often called a "mouse hole" where you push the cord into? If so, it sounds like the PO disconnected the 30 amp cord just inside the mouse hole and reconnected a 15 amp extension cord. No problem with that electrically, but yes, not good for running an AC plus other loads.

Sounds like all you need to do is buy a 30 amp (#10 awg) RV shore power cord and and reconnect to the trailer's wiring. You should have #10 romex cable at the mouse hole running to the 120 volt 30 amp panel that you'd splice to. If the PO changed that, you'd need to install some new #10 romex to the panel.

Some RVs have a detachable cord with twist-lock connecter on it instead, but I'm guessing you have a mouse hole setup.

The new cord could be a replacement cord without female connector on it like in 1st photo, or a 30 amp extension cord like 2nd photo and you'd simply cut the female connector off. Just need to make sure it's for an RV with a NEMA TT-30P plug. Available on Amazon, ebay and RV parts vendors for around $50. Or try your local Craiglist for a deal on one.

If you're somewhere that only has a 15 or 20 amp receptacle (typically at a home), you can use a 30 to 15 amp adapter as shown below which works fine for keeping a fridge and converter going.

[image][image]


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enblethen

Moses Lake, WA

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Posted: 08/08/19 06:57pm Link  |  Quote  |  Print  |  Notify Moderator

If he does have the small compartment, it may work better to use the 18 inch cord assembly then uses a thirty amp ecxtension cord rather then try to stuff the 25 foot cord in the compartment.

Cobra21

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Posted: 08/09/19 06:32am Link  |  Quote  |  Print  |  Notify Moderator

I would put an all new cord and plug combo on as it should be.
Brian

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Posted: 08/09/19 02:20pm Link  |  Quote  |  Print  |  Notify Moderator

Warning- since a "30A plug versus 110V wire" seems new to you, Amps and Volts are two different things.

Here's the catch- a typical dryer is a 30 amp, 240 volt plug. They look a little bit alike, and people have been able to force camper plugs into drier outlets.

The 30 Amps at the drier does no harm...the 240 volts however...not good.

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