[RE-wrenches] solid vs stranded AC vs DC

[Darryl Thayer]

hi all
In minnesota we get about 1400 Wh/Wp/yr (no losses) , if a system is designed for 3% voltage drop loss, this is 42 Wh/yr/Wp or 1050 Wh/Wp for 25 yrs.  if the wire is solid instead of stranded this saves 1Wh/yr/Wp or about 25 Wh/Wp for 25 years.   In terms of money if the customer is paying 10.00/watt installed and his electric rate is 40 cents/kwh he saves 0.0004$/year/Wp more if you use solid wire. That's 40 cents per 1kW installed.  
Small indeed
Darryl
--- On Tue, 8/4/09, Matt Lafferty <gilligan06 at gmail.com> wrote:

> From: Matt Lafferty <gilligan06 at gmail.com>
> Subject: Re: [RE-wrenches] solid vs stranded  AC vs DC
> To: "'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
> Date: Tuesday, August 4, 2009, 10:10 PM
> RE: 2% loss over 25 years is
> significant
> 
> Amen. Sorta makes one wonder how they've allowed and
> accepted <50% efficient
> combustion-cycle turbine plants all these years... That's
> before taking
> transmission losses of minimum 8%. 24/7 x 365.
> 
> Matt Lafferty
> 
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