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what wire do I need to go 250 feet for a 50 amp motorhome

Asked Jul 23, 2012, 02:54 PM — 1 Answer
I am going to come off a house panel going 250 feet to a pedestal for my motorhome. What is the smallest wire I can be by with. I will be running in the motorhome the air conditioner, refrigerator and hot water heater.

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ebaines Posts: 10,033, Reputation: 5529
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Jul 25, 2012, 09:45 AM
Thers'a a handy calculator for this here:
Voltage Drop Calculator

For 120 volt service, 50 amps, 250 feet you need a 1/0 gauge conductor. But 50 amps seems like a lot - drop it to 25 amps and 4 AWG would work.
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