I have used both on my boat. It all depends on what type is available in
the size that I need. If duplex is available I go for that.

Steve
Suhana, C&C 32
Toronto


On Sun, Mar 23, 2014 at 6:42 PM, dwight <dwight...@gmail.com> wrote:

>     "it will run hotter in the sheath"...that is sort of what I was
> thinking when I suggested the "fire and fuses" issue, not to mention that
> the duplex wire is fatter and thus a bit more difficult to run through
> tight spaces...that said, I used it to power the electric marine toilet on
> Alianna
>
>
>  ------------------------------
>
> *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *
> Gmail
> *Sent:* March 23, 2014 7:25 PM
>
> *To:* cnc-list@cnc-list.com
> *Subject:* Re: Stus-List Wiring
>
>
>
> About the only differences between using duplex vs primary are aesthetics,
> protection and heat rejection.
>
>
>
> Duplex will be better protected from chafe and damage.
>
>
>
> However, Once you calculate the recommended wire size for primary wire,
> increase it one size for duplex wire because it will run hotter in the
> sheath.
>
>
>
> I routinely strip a single wire out of duplex when I need it.
>
>
>
> Dennis C.
>
> Sent from my iPhone
>
>
> On Mar 23, 2014, at 2:07 PM, Joel Aronson <joel.aron...@gmail.com> wrote:
>
>  Blue Sea has a circuit wizard app tohelp size   wires.
>
> On Sunday, March 23, 2014, Rich Knowles <r...@sailpower.ca> wrote:
>
> When our boats were built, that was the accepted wiring practice. Fuses
> were in our houses along with left over knob and tube wiring. Thank
> goodness those days are gone.
>
> Rich
>
>
> On Mar 23, 2014, at 15:34, "dwight" <dwight...@gmail.com> wrote:
>
>  OK Rich, so why are the electrical system components on my boat almost
> exclusively supplied with 2 individual wires...I am quite certain the boat
> came from the factory that way as very few circuits have as yet to be
> rewired...hell I still got fuses...a sign of the times maybe or better duplex
> wire nowadays...seems to me that manufactures might go the less expensive
> route, especially if it were equally good so why don't I have duplex wires?
>
>
>   ------------------------------
>
> *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Rich
> Knowles
> *Sent:* March 23, 2014 3:14 PM
> *To:* cnc-list@cnc-list.com
> *Subject:* Re: Stus-List Wiring
>
>
>
> No matter what the application, the size/gauge of wire is a function of
> distance and current draw.
>
>
>
> Our very own web site, thank you Stu, has all the info you need to
> determine wire size. Remember distance is the return journey, not just one
> way. See:
>
>
>
> http://www.cncphotoalbum.com/doityourself/wiring/wiring.htm
>
> Rich
>
>
> On Mar 23, 2014, at 14:36, Chuck S <cscheaf...@comcast.net> wrote:
>
>   David,
>
> Each application may require a different kind of wire.  The Monitor wire
> is probably small current flow, 16 gauge or smaller like lampcord.  The
> solar panel probably requires heavier wire, # 4 or larger like jumper
> cables?  I'd follow the manufacturer's recs and buy that type, a little
> longer than estimated.
>
>
>
>
>
>
>
> --
> Joel
> 301 541 8551
>
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>
>
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