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Posted by Reader on November 10, 2007, 6:03 pm
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I am planning to install some new solar panels on a steep mountain slope.
The line will have to run about 250 to 300 linear feet to get to my house,
inverter, batteries, etc.
Is this feasible? How do I figure what type/size of line I will need for
this (and the approximate cost)?
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Posted by Martin Riddle on November 10, 2007, 6:46 pm
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>I am planning to install some new solar panels on a steep mountain slope.
> The line will have to run about 250 to 300 linear feet to get to my house,
> inverter, batteries, etc.
>
> Is this feasible? How do I figure what type/size of line I will need for
> this (and the approximate cost)?
>
>
You need to know what the current capabilities of the system are.
What losses you can afford ;)
Then you select the wire gauge.
3/0 and 2/0 are roughly $5-$3.5 / foot. Difficult to work with.
2,3,4 awg, $2-$3/ft easier to work with but higher resistance/ft, greater
losses.
It would help to run a system that has a higher voltage.
Cheers
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Posted by Vaughn Simon on November 10, 2007, 7:03 pm
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>I am planning to install some new solar panels on a steep mountain slope.
> The line will have to run about 250 to 300 linear feet to get to my house,
> inverter, batteries, etc.
We had almost this same thread just a few weeks ago either here or at aer. I
did a quick search and could not find it, but perhaps someone can remember the
title.
Others have told you the basics of deciding on a conductor size. Assuming
that conduit is out of the question and you must run the cable elevated,
consider aluminum triplex cable like power companies use for power services.
Remember that aluminum cable will have to be thicker than copper cable for the
same current, but it is lighter, cheaper, and easier to install.
Vaughn
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Posted by Reader on November 10, 2007, 8:11 pm
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No, no need to run the cable elevated. (Why did you make those assumptions?
About conduit and elevated cable?) I plan to use standard copper cable and
run it along the ground most of the distance. It won't be disturbed.
>
> Others have told you the basics of deciding on a conductor size.
> Assuming that conduit is out of the question and you must run the cable
> elevated, consider aluminum triplex cable like power companies use for
> power services. Remember that aluminum cable will have to be thicker than
> copper cable for the same current, but it is lighter, cheaper, and easier
> to install.
>
> Vaughn
>
>
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Posted by z on November 10, 2007, 9:16 pm
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> I am planning to install some new solar panels on a steep mountain
> slope. The line will have to run about 250 to 300 linear feet to get
> to my house, inverter, batteries, etc.
>
> Is this feasible? How do I figure what type/size of line I will need
> for this (and the approximate cost)?
>
>
any way you can build a little shelter for the batteries and inverter mid
way somewhere? then change to AC to send it the rest of the way to the
house?
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