Wiring a a drop outlet for my TT

[T0550087]

I can't seem to find the post that had it, but someone recommended a certain wire to use. I plan to install a power box for my TT while we use it as a house while our house is being built. Distance will be 50-75ft from main power source next to another power pole. I want to bury the wiring so this will be a permanent outlet and set up. Think it was #8auf wire? Sound about right? Single pole 30amp breaker to be used. I don't mind getting some schedule 40 PVC or the grey PVC to run wiring on it. Plan to do that anyways since this is a long term plan. Once house is built, I can use this spot/outlet for setting up TT for a trip, clean up or simply if we got company over they can sleep in TT if they choose to stay the night. Need recommendation on which wire to get.

[Sundancer330]

Go to Lowes or Home Depot they will have what you need. Tell them you want 30 amps and how long of a run you will have and they will size the wire correctly.

[T0550087]

Just trying to gather parts before I have someone else do the actually hooking up. I plan to mount box, dig the trench run the wiring and pipe. Have it all set up so all he has to do is connect breaker and connect outlet.

I tried our local Lowe's. Guy looked at me like a deer in the headlights when I said 30 amp 110v for a TT cause I was looking at the outlets. He kept telling me my TT had to be 240v. Uhm.... No.

[Sundancer330]

Here is a link to what you may need with wire size specs at the bottom depending on length of run.

http://www.myrv.us/Imgs/PDF/30-amp%20Service.pdf

[Jagiven]

If your running conduit the entire distance, consider individual strands of wire, a black, a white, and a green or bare ground, I would also consider adding a red to future to a 50 amp 220 volt setup, you'll just need one gauge up in wire.

As for wire gauge there are a few variables, distance, amps, and wire temperature rating. 8 gauge should work for 30 amps. 6 gauge should be more than enough for 50 amp.

Ampacity Charts

[bdreinv]

Will 30 amps be enough, we have two ac's and would need 50 amps.Just a thought!

[RogerR]

My county code requires all underground wire to a special type, not sure which, but of course it costs more than romex. Had to use it for a yard light.

[Vicr]

Use schedule 40 PVC (it's gray) buried to the depth that meet your conditions as listed in the NEC and pull #10 THHN ( Black, white and green). There won't be any measurable voltage drop over 75 feet. Make sure you pull a permit and have the ditch inspected before you back fill.
Vicr
IBEW Local 46
Seattle,WA

[Vaquero]

Hutto?
Yep. #8 will be the ticket. That 50 to 70 feet combined with the 25 or so feet of trailer cable add up. Direct bury will dissipate any heat from amperage better, but may shorten jacket life.
In conduit won't dissipate heat, but lengthens jacket life.
If you can dig a trench 10" deep and bury it, you've met code in TX for 120 volt cable on private property.

[Vicr]

Originally Posted by Vaquero

Hutto?
Yep. #8 will be the ticket. That 50 to 70 feet combined with the 25 or so feet of trailer cable add up. Direct bury will dissipate any heat from amperage better, but may shorten jacket life.
In conduit won't dissipate heat, but lengthens jacket life.
If you can dig a trench 10" deep and bury it, you've met code in TX for 120 volt cable on private property.

Vaquero, I'll be blunt. You have no idea what your talking about. I've been an electrician for 34 years. There will be less than 1% voltage drop at 100'. Direct burial cable actually will have less heat dissipation than conduit and conductors (the conduit is filled with air!) look at the NEC ampacity charts. Also the NEC supercedes any local codes. Also weather your on public or private property the NEC doesn't allow for any distinction for ownership of property.

Vicr
IBEW Local 46
Seattle, WA
Washington State EL01 License

[wags999]

Originally Posted by Vicr

Vaquero, I'll be blunt. You have no idea what your talking about. I've been an electrician for 34 years. There will be less than 1% voltage drop at 100'. Direct burial cable actually will have less heat dissipation than conduit and conductors (the conduit is filled with air!) look at the NEC ampacity charts. Also the NEC supercedes any local codes. Also weather your on public or private property the NEC doesn't allow for any distinction for ownership of property.

Vicr
IBEW Local 46
Seattle, WA
Washington State EL01 License

I have to agree. #10 wire is fine, THHN (stranded) white, black and green. Best to run in conduit for protection and also ease in pulling additional wires if needed. Check your RV to see if you have a 30 single pole or a 50 double pole system in your RV. If you have two AC's most likely you have a 50 amp system. Also be sure to get the correct plug....its NOT a 30 amp dryer plug, it's a 30 amp single pole (120 volt) plug.

Good luck.