30 amp RV- VD

AC\DC

Member
I have a customer that wants a 30 amp RV spot about 140’ feet away. He will also have 2-20 amp circuits. Trying to keep VD under 3% I get #4 copper.
My question is. I was trying to justify running a RV box with 50-30-20 connections so I could have 240 volts for smaller wire for my VD. I can’t justify it because more than likely he will only use the 30 amp.He will rarely use 20 amps- and then I will run into VD problem.
Any thought would help
 

AC\DC

Member
Yeah that probably would’ve been the best option. I still have to run the proper wire for the 30 amp but it save me on the 20 amp circuit.
 
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winnie

Senior Member
Upsell.

Explain to the customer that because of the long distance you need to run wire big enough for a 50A 240V receptacle. Would they like a pedestal with the 'works' (50-30-20)?

Note that going to 240V won't help you at all with your 30A voltage drop. However when you factor in that a 30A receptacle should be loaded to 24A on a continuous basis, and that the wire in the ground will be cooler than its rated operating temperature, I think you can get away with #6 Cu.

-Jon
 

LarryFine

Master Electrician Electric Contractor Richmond VA
I think a 240v feeder is still the way to go. 30a circuit on one line, two 20a circuits on the other.

And built-in future-proofing for a bigger RV and/or a small building.
 

Cow

Senior Member
This calls for a factory made RV pedestal/panel with integral receptacles.

Look through the Midwest/Milbank/Siemens/etc catalog for the part number you like. A single feeder to it and you're done.
 

AC\DC

Member
In the future he going to have a shop up there. He just rushing for his RV right now so he can live in it. Got a 8 space 125 amp panel going to feed with 70 ch breaker. I don’t see his small shop using more than 70 if so it’s piped all the way. Plus wire good for 90 amps
Plus my VD will still be in rang (currently)
 
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