[RE-wrenches] Long MC Cable Mid String

[Larry Crutcher, Starlight Solar]

Hi Dave,

You should calculate your voltage drop for the entire round trip  
distance of this circuit and size the wire accordingly. It does not  
matter where the wire is located in the series circuit; just the total  
length.

Kindest Regards,

Larry Crutcher
Starlight Solar
(928) 941-1660
Renewable Energy Products, Service and Installation

Mailing Address (NO SHIPPING):
11881 S Fortuna Rd.
#210
Yuma, AZ 85367

Shipping and retail store (NO MAIL):
2998 Shari Ave
Yuma, AZ 85365



On Apr 21, 2009, at 3:19 PM, David Palumbo wrote:

> Does the following series string wiring cause a problem? With  (18)  
> Evergreen ES-A 205’s (low voltage modules 18.4Vmp) in series feeding  
> a grid tie inverter with a long series connector in the middle of  
> the string.  (2) Top Of Pole 9 module mounts with the series  
> connection from module #8 on the first pole to module #9 on the  
> second pole. This MC cable connection would be, about, 36 feet in  
> length to go 10’ down the pole below grade 18” for 13’ and back up  
> the second pole 10’ (in conduit all the way) .
>
> Will this extra long series wire cause problems?
>
> I could use other modules of course but that would raise the cost  
> per watt by 70 cents.
>
> Dave
>
> David Palumbo, President
> Independent Power LLC
> 462 Solar Way Drive
> Hyde Park, VT 05655
> NABCEP Certified
> www.independentpowerllc.com
>
> _______________________________________________
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20090421/b5da0e5c/attachment-0004.html>