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Old 12-19-2012, 06:11 PM   #1
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110 amp or 220amp

Just bought a new 34TBOK and was wondering if it is 110amp or 220amp service coming in to it so we can wire a plug. It has the 50amp option for 2nd A/C. Service rep at dealership said 110 however the circuit breaker is a 50amp double pole which leads us to believe that it is 220. HELP PLEASE!!!!!! Dont want to mess anything up !

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Old 12-19-2012, 06:40 PM   #2
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I think what you are asking is what voltage? As far as I know most newer trailers (RV type) have either 30 or 50 amp service. Now the 50 amp service has 2 legs of 50 amps each so combined you technically have 100 amps available, but not 220 volts.Everything will be 110 volts. Now with some modifications on your RV electrical panel you probably could get 220 volts but why would you need it? Now the 30 amp service has only 1 leg at 30 amps, also 110 volt. I hope this helps, I'm sure others will have more info. Happy camping
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Old 12-19-2012, 07:03 PM   #3
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There are many threads to read about this. When we had an electrician put in a 50 amp plug at our sticks and bricks I about panicked the first time it was plugged in. WE NEVER EVER EVER plug in without a surge protector!!!!! It is cheap insurance as far as I am concerned for all that is electrical!
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Old 12-19-2012, 07:21 PM   #4
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Quote:
Originally Posted by kritta View Post
Just bought a new 34TBOK and was wondering if it is 110amp or 220amp service coming in to it so we can wire a plug. It has the 50amp option for 2nd A/C. Service rep at dealership said 110 however the circuit breaker is a 50amp double pole which leads us to believe that it is 220. HELP PLEASE!!!!!! Dont want to mess anything up !

Do not do anything until someone answers this from the forum.

My PC is off line and the files you need will be posted as soon as I get my back room put back together - hour or so
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Old 12-19-2012, 07:35 PM   #5
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Are you aware of what you typed?????????

When you say 110 or 220 are you talking voltage or amperage.

You mention you have a 50 AMP rig because of two A/C units.

Please confirm you understand the proper terminology related to electricity or you could injure yourself and damage your rig. There is a BIG difference between AMPS and VOLTAGE.

AMPS can kill way before VOLTAGE.
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Old 12-19-2012, 08:19 PM   #6
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Quote:
Originally Posted by kritta View Post
Just bought a new 34TBOK and was wondering if it is 110amp or 220amp service coming in to it so we can wire a plug. It has the 50amp option for 2nd A/C. Service rep at dealership said 110 however the circuit breaker is a 50amp double pole which leads us to believe that it is 220. HELP PLEASE!!!!!! Dont want to mess anything up !

On the four prong plug provided for 50 amp service only the two outside prongs are 110 volt each. The top is ground and the bottom is "neutral". The voltage provided to the RV is a really 220 but it is not wired that way. The left A prong serves the fwd bus bar while the right prong serves the rear bus. Each has its own 110 volt breakers and a separate load. The only coaches that utilize 220 volt bus (very high end) for dryers and what ever. Yes you can tap both front and rear bus for your 220 load but when it burns cause of a mistake, you are now self insured. To answer your question its really 220 Volt plug but with a split bus. No loads in RV's are more than 110 Volt. Thats why you have two independent 50 amp breakers.
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Old 12-19-2012, 09:02 PM   #7
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Here is a link that should help you out. RV Electric

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Old 12-19-2012, 10:27 PM   #8
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Thanks guys. Getting the PC back on line took longer than I thought.

RV Electric

MAKE SURE that any electrician you hire understands that a 30 amp RV socket is a 110 Volt AC circuit; NOT a 220 volt one.

You can power a 50 amp 4 pin socket with a 220 vac feed from the panel, BUT you will need a solid neutral and a ground wire. You can not wire it like a 220 VAC water heater (no neutral).
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File Type: pdf 30-amp Service.pdf (64.7 KB, 25 views)
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Old 12-19-2012, 10:28 PM   #9
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Even if you have an electrician install your plug, make him look at the above link "RV Electric". Many qualified electricians have wired the RV plug incorrectly and fried the RV with 220 volts.
Herk...may have taken longer than you thought but you were still quicker than I was....
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Old 12-19-2012, 10:31 PM   #10
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Originally Posted by bob213 View Post
Even if you have an electrician install your plug, make him look at the above link "RV Electric". Many qualified electricians have wired the RV plug incorrectly and fried the RV with 220 volts.
This is normally an issue only with 30 amp camper wiring.
The OP seemed to imply he had a 50 amp Power Center.

I do have to add that if the OP is confused to make sure whoever he hires is insured in case their "electrician" fries his camper.
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Old 12-19-2012, 11:51 PM   #11
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Here is a typical rv 50 amp plug. This is the same as many house appliances.

Click image for larger version

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-The left and right poles are "x" & "y" which is for red and black positive wires (doesn't matter which is lt or rt).
- The upper straight pole is neutral- usually white wire.
- the lower D looking pole is ground- normally bare or green wire

The 50 amp- again 50 amp plug such as pictured above is wired the same for rvs and house 220. Each positive pole is 110 volts measure from 1 positive pole to ground, but if you measure across both positive poles with a volt meter the result will be 220 volts. The rvs internally just use each pole seperately, where house appliances use both poles combined.

AGAIN THIS IS FOR 50 AMP ONLY- RV 30 AMP IS COMPLETELY DIFFERENT THAN MOST 30 AMP (3 PRONG) HOUSE HOLD PLUGS.

Fyi- every individual line going into your house is 110 volts +- 5%
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Old 12-19-2012, 11:53 PM   #12
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The RV is either 30 Amp/120 Volt or its 50 Amp/240 Volt. If it has 4 prongs its 50 amp. If it has 3 prongs its 30 amp. If you don't know what you're doing, hire someone that does. Not the guy at the hardware store or your some guy that your buddy knows. You'll be happier with the end result if its done by a professional. I do electrical work for a living and I run into some real hack jobs that I have to fix and its usually tougher when someone started out wrong.
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