[RE-wrenches] solid vs stranded AC vs DC

[Darryl Thayer]

Thanks DAve yes I meant 2% more for stranded than the voltage drop for solid.  So the number is very small.  Your example was right on.

Darryl

--- On Wed, 8/5/09, Dave Click <daveclick at fsec.ucf.edu> wrote:

> From: Dave Click <daveclick at fsec.ucf.edu>
> Subject: Re: [RE-wrenches] solid vs stranded  AC vs DC
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Date: Wednesday, August 5, 2009, 7:58 AM
> 2% loss is significant, but I think
> that Darryl was saying that the 
> resistance for stranded wire was 2% higher than solid. So
> if you had a 
> 3% voltage drop in your system with stranded wire, you
> could rewire the 
> system with solid wire and have a voltage drop of (3% x
> 0.98) 2.94% at 
> peak production; that's less than 1 kWh/yr per kW
> installed.
> 
> DKC
> 
> -------- Original Message --------
> Subject: Re: [RE-wrenches] solid vs stranded  AC vs
> DC
> From: Joel  Davidson <joel.davidson at sbcglobal.net>
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Date: 2009/8/3 20:31
> 
> > 2% loss from any resistance source over 25 years is
> significant.
> > 
> > ----- Original Message ----- From: "Darryl Thayer"
> <daryl_solar at yahoo.com>
> > To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> > Sent: Monday, August 03, 2009 2:04 PM
> > Subject: Re: [RE-wrenches] solid vs stranded AC vs DC
> > 
> > 
> > 
> > Yes, that is what the code book and my electricians
> handbook says, but 
> > 2% is very little.  I would think that passing
> through a conduit hole is 
> > larger than that.
> > Darryl
> > 
> > --- On Mon, 8/3/09, Matt Tritt <solarone at charter.net>
> wrote:
> > 
> >> From: Matt Tritt <solarone at charter.net>
> >> Subject: Re: [RE-wrenches] solid vs stranded 
> AC vs DC
> >> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> >> Date: Monday, August 3, 2009, 3:49 PM
> >>
> >>
> >>
> >>
> >>
> >>
> >> Darryl,
> >>
> >>
> >>
> >> Say what?! This would seem to indicate that solid
> core is
> >> actually
> >> better for DC than stranded wire. Can this
> possibly be
> >> true??
> >>
> >>
> >>
> >> Matt
> >>
> >>
> >>
> >> Darryl Thayer wrote:
> >>
> >>   I looked in the code book and
> found stranded wire
> >> has about 2% higher DC resistance than solid,
> Chapter 9
> >> table 8, and that for AC resistance the same value
> as DC
> >> resistance to within the table accuracy Chapter 9
> Table 9
> >>
> >> This table points out that for AC resistance it
> is
> >> important to know the conduit system, as the
> reactance will
> >> have an effect.  With AC it is important to
> never allow a
> >> single wire to pass through a metal surface as
> this will
> >> induce eddy currents and magnetic effects into the
> metal
> >> causing voltage drop and heating.
> >>
> >> --- On Fri, 7/31/09, jay peltz <jay at asis.com>
> >> wrote:
> >>
> >>
> >>
> >>     From: jay peltz <jay at asis.com>
> >> Subject: Re: [RE-wrenches] solid vs stranded 
> AC vs DC
> >> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> >> Date: Friday, July 31, 2009, 10:01 PM
> >> Hi Darryl,
> >>
> >> But what are the differences and when do they come
> into
> >> play?
> >>
> >>
> >>
> >>
> >> On Jul 31, 2009, at 7:25 PM, Darryl Thayer wrote:
> >>
> >>
> >>
> >>       Well there is very
> slight differences between AC
> >> and
> >>
> >>
> >>     Dc But this
> >>
> >>
> >>       difference
> >> is so slight that it has no effect on anything we
> will
> >>
> >>
> >>     do.
> >>
> >>
> >>       Darryl
> >> --- On Fri, 7/31/09, jay peltz <jay at asis.com>
> >>
> >>
> >>     wrote:
> >>
> >>
> >>
> >>         From: jay
> peltz <jay at asis.com>
> >> Subject: [RE-wrenches] solid vs stranded AC
> >>
> >>
> >>
> >>     vs DC
> >>
> >>
> >>
> >>         To:
> "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> >> Date: Friday, July 31, 2009, 7:00 PM
> >> HI All,
> >>
> >> I'm trying to understand this wire issue.
> >>
> >> Whether or not there is a difference between
> >>
> >>
> >>
> >>     stranded or
> >>
> >>
> >>
> >>         solid wire
> for DC or AC.
> >>
> >> Any takers on this one?
> >>
> >> thanks,
> >>
> >> jay
> >>
> >> peltz power
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