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Old 08-30-2013, 06:28 PM   #1
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Electrical Question

We are finally getting underground power to my RVport (new word not a garage more like a carport). A licensed electrician is doing the work, BUT he is the first to tell you he know nothing about RVs. He purchased the receptacle through a RV source. After reading some of the threads I made sure it was correct for a motorhome. We are going to use the 30amp service that services our well. The electrician will tie into the 30 amp line prior to the well so the RV will have continuous service as the well is only live when the tank needs filling. (I hope I’ve explained that correctly) We would prefer to run a separate 30 or 50 amp line but due to other structures and constraints it is not possible without tremendous cost.



My question: The RV will be set like it is at many campgrounds for the 30 amp service. There will be very limited use of power in the RV but when we do use it ….If the basement HVAC is on and the well comes on…both being on the same 30 amp service is there a chance of damage to the RV or well or will the breaker kick and that is all that will happen?



The electrician thinks the breaker kicking or a dimming of RV interior lights but I want to be sure. The basement AC is a bigger issue than the heat.


Thanks for your expertise on this...
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Old 08-30-2013, 06:34 PM   #2
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What is the start and running power consumption of the pump?
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Old 08-30-2013, 06:35 PM   #3
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Not being an electrician, I would say that the worse thing would be the breaker would trip. I was hooked up to 30 amp at a campground and tried using the micro wave while both A/C units were on and all that happened was the campground breaker tripped. No harm done.
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Old 08-30-2013, 06:39 PM   #4
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If I had to bet your well is setup with a 30 amp. breaker and the amp. draw on the wire is going to be in the mid 20 amp. range, so yes, if using you rv shut down your well so it does not come on.
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Old 08-30-2013, 06:42 PM   #5
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New Electrician

No disrespect to your electrician, but he should be able to calculate all of these things, if he truly is an electrician. You should never knowingly set up an electrical situation where an overload can occur. Without knowing your situation, and because I am a master electrician, you need to get a second opinion from another electrician, not one of his buddies, but a real electrician. Last thing you want to do is burn down your rv or your home... That sounds like where you are headed, just based on your description..
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Old 08-30-2013, 06:48 PM   #6
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Quote:
Originally Posted by vsheetz View Post
What is the start and running power consumption of the pump?
I'll check that out.
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Old 08-30-2013, 06:55 PM   #7
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Quote:
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No disrespect to your electrician, but he should be able to calculate all of these things, if he truly is an electrician. You should never knowingly set up an electrical situation where an overload can occur. Without knowing your situation, and because I am a master electrician, you need to get a second opinion from another electrician, not one of his buddies, but a real electrician. Last thing you want to do is burn down your rv or your home... That sounds like where you are headed, just based on your description..
X2; my last sticks & bricks had a 240V well pump. Does your so-called electrician know that your RV only uses 120V?
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Old 08-30-2013, 06:58 PM   #8
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Quote:
Originally Posted by Mike Thomas View Post
No disrespect to your electrician, but he should be able to calculate all of these things, if he truly is an electrician. You should never knowingly set up an electrical situation where an overload can occur. Without knowing your situation, and because I am a master electrician, you need to get a second opinion from another electrician, not one of his buddies, but a real electrician. Last thing you want to do is burn down your rv or your home... That sounds like where you are headed, just based on your description..
This is a real, Georgia licensed electrician that is has done many new homes and commercial jobs. He has been an electrician for over 30 years. His company is well respected. I can not think if he thought for one second that there was a chance of fire he would consider doing this.
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Old 08-30-2013, 07:09 PM   #9
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Again, when your well or anyone's is installed (I have a well and the pump is 240 vac) the breaker is installed to operate the pump and nothing else. I find it hard to believe a licensed electrican would tap into the wires on a water well to run a service for a persons RV. I would go another route for power if it were me.
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Old 08-30-2013, 07:12 PM   #10
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Most well pumps are 220v. If your RV is wired for 30 amp service major problem if he wires the rv outlet for 220v. Will toast most everything electrical in the RV. The rest I'm sure he understands.
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Old 08-30-2013, 07:34 PM   #11
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First. I always recommend if you are hiring the job done put in a 50.. Why... Well less likely he will mess it up.

Now... IF he uses wire heavy enough (I am very fond of "one size larger" by the way) then if the Basement A/C kicks in and trys to draw like 40 amps on a 30 amp line the breaker will trip. Then the lights will dim (Since they run on 12 volt and will now be seeing 12.5 instead of 13.6) till you reset the breaker.

There will be no damage to the RV

Damage to the RV, by the way, would be to the motors in the air conditioner. and would only happen if the electrician uses wire too small for the length of the run so the voltage drop is excessive.
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Old 08-30-2013, 07:34 PM   #12
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thank you for your replies, I will go over all of the issues noted with the electrician before we go any further with this.
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Old 08-30-2013, 07:57 PM   #13
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Make sure the well Pump is NOT a 240 Volt system. Most every well pump I know of in my area run on 240 volt power. If you hook that up to your RV you will let a lot of the Magic Smoke out of a lot of your equipment. A RV 30 Amp plug is 120 Volts only. Make sure your electrician knows that.
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Old 08-30-2013, 08:04 PM   #14
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Quote:
Originally Posted by Sundancer268 View Post
Make sure the well Pump is NOT a 240 Volt system. Most every well pump I know of in my area run on 240 volt power. If you hook that up to your RV you will let a lot of the Magic Smoke out of a lot of your equipment. A RV 30 Amp plug is 120 Volts only. Make sure your electrician knows that.
x18
Pump is 240v, 30amp RV outlet is 120v.
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