Running Electricity to an out building

rjingaJuly 12, 2007

I am in the process of building a green house and will need electricity near by. The area I'm considering putting it is a straigh shot from our house about 100 to 150 feet out.

I'm wondering what to expect as far as options and cost. I live in GA. I know a handyman who does work on the side and he does electrical work for a living (although I'm not 100% sure whether or not he's a licensed electrician)

Just wanting to "have a clue" before someone comes to bid this and sells me a hog farm...when all I wanted was a 1 lb of bacon ;)

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A lot depends on what you intend to run in the greenhouse. Grow lights? Heaters? swamp cooler? Fans? Alarm system?

At a minimum, run 10/3UF for two 20A circuits, run as a multiwire branch circuit.

    Bookmark   July 12, 2007 at 2:16PM
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thanks for your quick response :)

I will need to have lights, fans and heaters (not necessarily going all at the same time..I have not yet figured out exactly what kind of cooling system I will put in it...or heating either.

Would this be a relatively simple job for a skilled person? time consuming? or pretty straigh forward?

    Bookmark   July 12, 2007 at 2:20PM
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I imagine the more expensive part is digging the trench for the conduit.

    Bookmark   July 12, 2007 at 3:18PM
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i would think that 2 20 A circuits would be plenty. you can use one to power either the heater or the cooling, and have the other to power the lights. more than 2 circuits will require a subpanel, so if you want to stay away from that i would go with the above suggestion.

i know here in MS we don't cool greenhouses other than with exhaust fans to suck the heat out, some have a psuh-pull setup, with a fan down low to push fresh air in, and one high to pull hot air out the top. the fans don't have to be very large either. my FIl uses a couple of Walmart Box fans, and his stays fairly comfortable.

    Bookmark   July 12, 2007 at 4:50PM
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To me the key will be the size of the greenhouse and the amount of heating needed. Once you decide on the exact electrical contents of the ghouse, then we can be more specific with recommendations.

    Bookmark   July 12, 2007 at 5:50PM
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I know a handyman who does work on the side ...

Suggest you hire him to dig the trench. Then have a licensed electrician do the wiring.

    Bookmark   July 12, 2007 at 5:53PM
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thanks to all who responded. I'll do some homework on this and when I get my specs together...I'll repost. I think the box fan idea will be sufficient, as I will really only be able to draw out the heat and circulate air. I will be checking in on the other forums (related to GHouses) and get ideas for the type of heating I'll need. What I intend to build will be approximately 8ft tall, 6 feet wide and probably 8 feet deep. It will be a pole & rafter? type stucture with an A frame roof.

    Bookmark   July 12, 2007 at 6:32PM
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Ok, that helps a lot. A small ghouse will only require 120V space heater type of heating. I'd go with normel's suggestion of 10/3 feeding 2 multiwire 20A cc'ts. That should be lots of power for that small a size of building.

    Bookmark   July 12, 2007 at 9:40PM
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Ron Natalie

Gee with the subject line I thought we were going to do the "running spark" joke.

    Bookmark   July 13, 2007 at 9:02AM
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