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Old 01-28-2014, 08:11 AM   #1
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Comments about my wiring plans to two backyard sheds?


I'd like to wire my sheds in the back yard. The sheds are in series with the small shed about 10' from my home and the large shed, about 40' from the small one. Large shed is shop, small is garden shed.

I'd like to run overhead, a 10-3 w/g 240v UF feeder from my panel to the small shed with a 60a sub-panel. I'll use one leg of the 240v for two 15a receptacles and two lights in the small shed. I'll run the other 120v leg overhead from the small shed with 10-2 w/g UF feeder to the large shed where I'll run a single 30a circuit with receptacles and light fixtures on a 40a subpanel.

The max current I'll draw in the large shed is 20a, and the small one, probably less since the 20a is my surface planer running with all the lights on.

Is this a safe setup? At least for the time being (years maybe). If it's not, what would you recommend for a safe over-head solution to this problem?


Last edited by jackmel; 01-28-2014 at 08:45 AM.
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Old 01-28-2014, 09:34 AM   #2
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Comments about my wiring plans to two backyard sheds?


Can't address your spedific question, though I'd guess what you want to do is not legal. UF is for underground use, and that's what I'd do. Have you checked your local codes? Underground would be required where I live. Conduit and THHN/THWN conductors would probably be cheaper as well.

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Old 01-28-2014, 10:38 AM   #3
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Comments about my wiring plans to two backyard sheds?


You are so far from legal it's not worth going into specifics.
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Old 01-28-2014, 11:45 AM   #4
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You are so far from legal it's not worth going into specifics.
You took the words right out of my keyboard.

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Old 01-28-2014, 06:30 PM   #5
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Comments about my wiring plans to two backyard sheds?


The tensile force on sagging cables can be quite high, and less cable sag gives more force.
http://www.engineeringtoolbox.com/ca...ds-d_1816.html

Copper is not so strong in tension.
Cable companies can advise you on this and will probably recommend using cables with messenger wires. And the end terminations must be able to resist the pullout force from these messenger cables.

Do you get snow and ice in your area?

Last edited by Yoyizit; 01-28-2014 at 06:32 PM.
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Old 01-29-2014, 09:02 AM   #6
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Comments about my wiring plans to two backyard sheds?


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Originally Posted by Yoyizit View Post
The tensile force on sagging cables can be quite high, and less cable sag gives more force.
http://www.engineeringtoolbox.com/ca...ds-d_1816.html

Copper is not so strong in tension.
Cable companies can advise you on this and will probably recommend using cables with messenger wires. And the end terminations must be able to resist the pullout force from these messenger cables.

Do you get snow and ice in your area?
(Virtually) no snow or ice. It is discouraging to here the pros disparage about it. It was initially a temp install after a storm but we know how that goes. I think, since hearing the pros bad-mouth me so much about it, what I will do is just disconnect it from my home for the service upgrade inspection. I mean physically remove the 10-2 feeder from my house to first shed.

After the upgrade,, I'll "temporarily" re-connect the sheds and place a high priority of running underground feeders to fix the problem "professionally".
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Old 01-29-2014, 07:39 PM   #7
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Comments about my wiring plans to two backyard sheds?


Aah, another dissastisfied customer. Why bother coming here (or to any DIY forum) if you don't like, and plan to ignore, the professional answers you get??
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Old 01-29-2014, 07:49 PM   #8
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Comments about my wiring plans to two backyard sheds?


Your wires are seriously undersized. Your current setup is extremely unsafe. That is why your getting the reaction your getting. You can't just pick whatever wire size you want
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Old 01-30-2014, 06:53 AM   #9
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Comments about my wiring plans to two backyard sheds?


Fine. You guys are right. It's not an acceptable setup and the right thing to do is to re-wire the sheds before the upgrade otherwise, I'll just put it back the way it was and leave it. Dang it! I hate running underground cable. Doing that work is in my opinion just as difficult as a service upgrade. I should re-think my plans.

Thanks for the wise stance on this guys.


Last edited by jackmel; 01-30-2014 at 07:11 AM.
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