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Old 03-15-2014, 09:50 PM   #1
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30 amp at 120v or 240v

We have a C Class Forest River Lexington I just purchased. We are new to motorhomes. The manual for our 2008 talk aboug 120v everywhere. We park the RV at our home and I want to power the RV from a new circuit.. I made an assumption to make the circuit 30amp at 240v.

I have not turned on the breaker because I am unsure and I can't find electrical specs.

So I am looking for expertise and knowledge for what this house circuit spec should be.

Thank you very much for your expertise.

George Boyle
Burnsville NC
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Old 03-15-2014, 09:52 PM   #2
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STOP!!! Your RV uses 30 amp 120 volt, 220 volts will cause you serious damage to your RV.
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Old 03-15-2014, 09:55 PM   #3
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STOP X2......30 amp 120vac
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Old 03-15-2014, 09:57 PM   #4
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30a RV service is 120v.

The 30-amp 120-volt 2 pole 3 wir
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Old 03-16-2014, 06:03 AM   #5
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" I have not turned on the breaker"..

A very wise move.. The TT-30 outlet is clearly marked 125 Volt Maximum.

At 120 volts you turn it on and everything works as designed.

At 240 volts all the magic smoke escapes, and as you may know electronic devices run on magic smoke, We know this cause when the magic smoke escapes (And man is that stinky smoke) it no longer works.

All US RV's are 120 volt.. 50 amp rigs are 120 volts.. Plus 120 volts

(The technicial term is 240 volt center tap but the wiring is |<-120->|<-120->|
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Old 03-16-2014, 01:28 PM   #6
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Plugging in to 240V will be painful to the wallet....
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Old 03-22-2014, 08:13 AM   #7
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I am also new to MHs. I phoned Nexus the other day asking if I can get an adapter to use a regular extension cord to the house. Even though their manual says to use a 30 amp 'big arse' cord, Nexus service rep said yes. I still don't trust their answer.
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Old 03-22-2014, 08:20 AM   #8
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Quote:
Originally Posted by Josewales View Post
I am also new to MHs. I phoned Nexus the other day asking if I can get an adapter to use a regular extension cord to the house. Even though their manual says to use a 30 amp 'big arse' cord, Nexus service rep said yes. I still don't trust their answer.
There is no problem with using the adapter and running an extension cord to your house. These adapters are available at any rv dealer or just go to WallyWorld, they have them in the camping section of the store. Just make sure the outlet your plugging into is 120v and has a good ground connection.
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Old 03-22-2014, 08:32 AM   #9
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Originally Posted by Steve N Sal View Post
There is no problem with using the adapter and running an extension cord to your house. These adapters are available at any rv dealer or just go to WallyWorld, they have them in the camping section of the store. Just make sure the outlet your plugging into is 120v and has a good ground connection.
Thanks!
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Old 03-22-2014, 09:14 AM   #10
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Quote:
Originally Posted by gboyle View Post
We have a C Class Forest River Lexington I just purchased. We are new to motorhomes. The manual for our 2008 talk aboug 120v everywhere. We park the RV at our home and I want to power the RV from a new circuit.. I made an assumption to make the circuit 30amp at 240v.
George Boyle
Burnsville NC

George
WARNING!....CAUTION!
A correctly wired 30A RV receptacle is 120VAC....NOT 240V!

Because a 120V 30A RV receptacle is similar in appearance to a 240V 30A dryer receptacle, RV receptacles are often wired WRONG..... (even by licensed/professional electricians).

(As vsheetz said, in reply #4, see the wiring diagram and other information @ : The 30-amp 120-volt 2 pole 3 wir ).

Mel
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Old 04-12-2014, 07:56 PM   #11
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30amp power

Hello all who replied to my post. I am new to motorhomes and I hastely posted this not even understanding the electrical system. I had my electrical contractor return and change the wiring and circuit breaker. So, I'm back in business and want to thank all of you for sharing your experience and knowledge. Being part of this forum has really helped my wife and I learn about RVs and how to take care of it.
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Old 04-12-2014, 08:09 PM   #12
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WHEN ALL ELSE FAILS READ THE BOOK u wil do LOTS of damage
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Old 04-12-2014, 08:30 PM   #13
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You will find the correct wiring for your house location in this link in RV Systems & Appliances forum.
Incorrect wiring and you will blow all electronics in your coach.
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Old 04-13-2014, 06:59 AM   #14
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If you look at a TT-30 outlet,, it very clearly says 125 volts MAXIMUM.
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