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Country Discussion Topics
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Water well and electrical
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Chris Mainka    Posted 02-07-2004 at 09:23:45       [Reply]  [Send Email]
Hi Folks - next question - well I think I know the answer to this but I will ask any way - I am quessing it will be better to have my water well dug with in a reasonable distance to the secondary power box than to run the 300 or so feet to the barn box and than back out to the well. The drag from the voltage drop would be bad for the pump would it not?

Thanks Chris

Lazy Al    Posted 02-07-2004 at 10:43:21       [Reply]  [No Email]
Don't you have to dig a trench to the house from the well for water ? Why wouldn't you just feed the well from the house ? I would think your well digger would do that and put the presure tank in the house .

Willy-N Barn    Posted 02-07-2004 at 09:37:56       [Reply]  [No Email]
On your Barn Power you need to know what your real load will be in amps. I know you said 100 amps but that is a lot of power for a welder or compressor. If the welder is 50 amps max and your compressor is say a 5 hp 20 amp then you need 70 amps to run both at the same time. Once you get around 70 amps a run that long will make the wire size go up fast. If you could keep the load around 50 amps max you could get away with 2/0 alum and cut your costs in haft. Mark H.

Chris Mainka    Posted 02-07-2004 at 20:54:20       [Reply]  [Send Email]
Ahhh so much to think about. Mark you make a good point about how many amps I will actually need at the barn. I also didn't think about the fact that I have to run three of whatever wire I run.

Thanks all for input.


Willy-N    Posted 02-07-2004 at 22:53:32       [Reply]  [No Email]
Just remember the Neutral can be 2 sizes smaller then the hot wires. Like this 4/0-4/0-2/0 or 2/0- 2/0-#1 The neutral carries the unbalenced load and if the load is 240 volts there will be no load on it at all. So the load on the neutral will come from the 120 volt stuff and if you pull it off both sides you will balance it out. Mark H.

Willy-N    Posted 02-07-2004 at 09:28:23       [Reply]  [No Email]
Same problem but your load is low and the voltage drop won't be as bad so the wire won't have to be that large. You could run #2 alum to a panel at the top of the casing and you would be OK and that would give you extra power for other things in the pump house. Mark H.

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