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Old 03-03-2013, 07:37 AM   #1
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Question Power cord

I have 50 amps and a down to 30 amp adapter and then a 15 amp adapter. My question is what size power cord do I need if I am plugging in to my house with the 15 amp adapter?
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Old 03-03-2013, 07:41 AM   #2
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Get a good heavy cord with #12 wire in it. No heaters, no a/c units, just enough power to run the fridge (on electric) and keep the battery's charged
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Old 03-03-2013, 07:47 AM   #3
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Depends on what you plan to run and how long the cord. A 14 gauge would normally be enough for 15 amps. 12 would be better of course but if you are just keeping the batteries charged there is no need to overkill it.
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Old 03-03-2013, 07:51 AM   #4
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A 15 A adapter is a bit of a misnomer as the amps are dependent on the circuit breaker wall outlet and attendant wiring. I do not have any circuits in my house or garage that are less than 20A. All of the wiring is 12Ga but none of my extension cords are less than 10Ga. You can if you are limiting to 15A use 12 Ga. Why risk an electrical fire?
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Old 03-03-2013, 07:54 AM   #5
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Quote:
Originally Posted by HD4Mark View Post
Depends on what you plan to run and how long the cord. A 14 gauge would normally be enough for 15 amps. 12 would be better of course but if you are just keeping the batteries charged there is no need to overkill it.
When it comes to electric cords and electric power there is no such thing as "over-kill" in my book.......
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Old 03-03-2013, 08:50 AM   #6
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If you have the space on your home panel, plan on living there a while, and plan on owning an RV... why not just install a 50 amp outlet? Then you can run everything if you want right in your driveway. I installed one at my house in about an hour and my total cost was about $75.
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Old 03-03-2013, 09:09 AM   #7
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Thumbs up Power cord

Now Steve you are assuming I know anything about electrical issues much less self installing something! however I want to thank you and everyone else for their input! I love this forum, you guys get all my questions answered!
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Old 03-03-2013, 10:34 AM   #8
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The question we should be asking is: How far away is the RV from the electrical connection at the house? (HD4Mark said it)

You have a voltage drop due to resistance in the power cord and it increases with length. I think you want to provide your RV with at least 105 volts at all times. The bigger the power cord conductors the less the voltage drop so you can't determine the proper cord size without knowing the length and current. In this case I would use 15 amp for current.

Google "power cord voltage drop caculator" and you will find several caculators to determine power cord size/length for current being drawn.

I like this site Voltage Drop Calculator, Amperage Tables, Wire and Cable Technical information for voltage drop caculator.

Also, make sure connections are clean, a dirty connection will be resistive and get hot and burn itself up after a while.

good luck
Larry
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