Forum Discussion

pianotuna's avatar
pianotuna
Nomad III
Feb 22, 2014

running an air conditioner on 250 feet of cord

Hi, Obviously voltage drop is going to be an issue. If I have a 20 amp 120 volt outlet, could I use #10 wire and place an autoformer at the RV end to deal with voltage drop? What about using ...
wa8yxm's avatar
wa8yxm
Explorer III
Feb 23, 2014
enblethen wrote:
Calculations are based on only 10 amps.
Have you looked into small gauge URD(underground Rural Distribution) direct burial. Yes, it is aluminum but is must cheaper. Comes in various sizes. Here is an example. #6 URD


Yes I used 10 amps. cause it is a nice round number

1.6
+.16
+.16
+.16
2.24
For a 13 amp air conditioner.

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