[AJD] Barn Electric Service, was Late A Roll-o-...

R Mull rbobmull at comcast.net
Tue Oct 4 07:27:43 PDT 2005


Tom ,  I read that he coming from a 200 amp box. For 400 feet to run a 50 
amp outlet for a small welder he needs to install at least # 2 Awg and that 
is not going to fit in a 1" conduit.
----- Original Message ----- 
From: "Tom in N Texas" <tdulin at pulse.net>
To: "Antique John Deere mailing list" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Tuesday, October 04, 2005 9:32 AM
Subject: [AJD] Barn Electric Service, was Late A Roll-o-...


> John,
>
> Sorry, I can't help with a source for a temporary barn.
>
> What caught my eye was the 400 foot run of your electric service to the 
> permanent barn. I suspect you know that long service runs require 
> extra-large wire to avoid excessive Voltage drop.
>
> When I ran the service to my barn, I installed #3 AWG wire in the 
> underground service. I installed a 70 Amp circuit breaker at the house. I 
> think this is enough to run a small  electric welder. I'm sorry that I 
> don't remember the calculations to determine the wire  size for long runs. 
> To maintain a reasonable Voltage drop, you should probably double the wire 
> AREA each time you double the distance.
>
> I think the rule of thumb for the first hundred feet is to go up two AWG 
> numbers. A twenty-Amp service is normally wired with #12 AWG. So go up two 
> wire sizes says use #10 AWG for a hundred foot run.
>
> Now, double the AREA for two hundred feet. Then double it again for four 
> hundred feet. I'm sorry I don't have a wire table handy to tell you what 
> wire size that is. We're installing new carpets and all my books are 
> packed.
>
> That would give you two twenty-Amp circuits, barely enough for some lights 
> and one tool at a time. The cost would be prohibitive, of installing a 
> service large enough for a welder, let alone 200 Amperes. The only way 
> would be to have your electric company install a power line and a 
> transformer at the barn.
>
> Hope this helps a little bit. I'm sorry it's not sufficient.
>
> Tom in North Texas
>
> -----------------------------------------------
> At 09:20 AM 10/3/05 , you wrote:
>>All,
>>
>>Can anybody point me to a website that sells temporary inexpensive
>>garage/barn kits made from tarp material.  I need a place to keep my 49
>>BW out of weather and large enough to work in.  Right now it's partially
>>dismantled and under tarps since Summer of '04.
>>
>>I did buy a portable garage for my wife's van from Costco for around
>>$170 that should last for about 3 years till the tarp starts to break
>>down from sun. I was thinking of using something like this unless there
>>is a better idea out there..
>>
>>I also wonder if there's a cheap site to buy wire for the underground
>>service to our future barn pad (where the tractor is stored now). I need
>>to run 240v from a 200 amp service underground about 400 ft through a 1"
>>conduit.
>>
>>Thanks for any advice..
>>
>>John Kania
>>
>>Sunnybrook, California
>
> Tom in N Texas, KC5INU,  tdulin at pulse.net, "Nothing Runs like a JD MT 
> Deere",
> 1949 John Deere MT, JD No. 50 Box Blade,  1954 JD No. 5 Sickle-Bar Mower,
> 1975 JD 214 Lawn Tractor, 1918-22 JD Dain Horse-Drawn Sickle-Bar Mower
> _______________________________________________
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