Hi Folks,
In several months we will be installing a 100kW ground mounted PV
system for one of our commercial customers. I'm in the planning stage
and am looking at the wire runs. The site requires a 700' underground
wire run between the 480V service and the single central inverter
located at the array (a PVP100kW unit). I have two related questions:
1: Given the significant cost of the AC cabling for this situation,
what is the most appropriate number to use for current in running
voltage drop calcs? The wiring is going to be significantly oversized
to achieve a ~1% VD at this length. I could use the max rated output
current of the inverter (120A), but that seems like it might be overly
conservative. Opinions?
2: It looks like the most cost effective and manageable solution for
this run will involve several paralleled sets of cables. How important
are the considerations of careful cable bundling? ie: putting several
conductors per phase willy nilly in a trench vs having separate
triplexed bundles.
Thanks in advance for your thoughts.
Luke Christy
NABCEP Certified PV Installer™: Certification #031409-25 (Luke Christy)
NABCEP Certified Solar Thermal Installer™: Certification #ST032611-03
CoSEIA Certified PV Installer (Luke Christy)
Solar Gain Services, LLC
Monte Vista, CO.
sgsrenewab...@gmail.com
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@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
