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I would love to run some electric back to this cabin that would run the following - mini fridge 1.2 amps,
Here is the balance of the electrical items that we use. 2.5 gal. hot water heater 12.5 amps
Our water system is feed by a 12 volt pump. I do own a Kubota with back hoe so I can dig the trench for direct burial cable. What size wiring would I need to accomplish this. I am open to any and all ideas. Thanks,
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Follow-Up Postings:
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| What exactly do you consider "an outrageous amount"? You may find that it is quite reasonable when you start comparing it to 1500+ ft of 500mcl Quadplex. |
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- Posted by buckeyewilly (My Page) on Thu, Oct 29, 09 at 16:46
| I believe their cost was $12000. |
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- Posted by spencer_electrician (My Page) on Thu, Oct 29, 09 at 19:42
| If 2/0 aluminum would cut it, the wire would run about $6,000. Then it is all you, trenching/ installation. |
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| 1500ft of 2/0 AL would drop about 8 volts at 20A. You could watch the lights and know when your water heater was up to temperature. |
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- Posted by buckeyewilly (My Page) on Fri, Oct 30, 09 at 9:19
| I think my post might have been misleading. I am only interested in supplying enough power to cover the fridge, lighting & tv which is about 6 amps. The balance of the appliances we would continue to use the generator as needed. Just having the fridge and lights would be great!! |
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| Using a voltage drop calculator and 30 amps as a reference you need to use 350 MCM. |
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| Even at a 20A load, you need 4/0, and that's if you run a 120/240 feeder for a subpanel. |
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- Posted by rjoh878646 (My Page) on Fri, Oct 30, 09 at 11:54
| If i was you, I would invest in a solar panel system with batteries. It would probably be cheaper than running wire. |
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- Posted by bus_driver (My Page) on Fri, Oct 30, 09 at 17:12
| If it was mine, I might consider using step-up transformer at the source and step-down at the point of use. THWN is rated at 600 volts- requires conduit. Impractical for your distance. Type UF-B cable is typically rated at 600 volts. But you will spend $6000 or more on the cheapest setup I can envision. Without the step-up, use of 120/240 will cut voltage losses to 1/4 that of 120 volt supply for the same amperage if the loads on the 120/240 are evenly divided between the poles. Cable for the 120/240 costs considerably more, but use of smaller size may be possible. |
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