Hey this is exactly everything I was going to say. Ahh the new owner, the dentist he’s a real piece of work. You got your spring vacation, on him, you got paid and now you want to go back? Hummm lets see installation for a MR. know it all, 500+ miles from home and you’re now going to use a transformer AND all wire on an island in salt water. Wow must be some good smoke. Dan YOU KNOW BETTER! > On Jan 10, 2022, at 8:37 AM, Pieter Huebner <[email protected]> > wrote: > > It sounds like you are working on an Island near Jones port Maine ( Norton > Island). The site had or has a Bergey 7.5kw XL-R wind turbine, on a tilt > tower which is almost impossible to tilt, a solar array on a stacked log > tower, Kubota generator, flooded cell lead acid batteries and Outback > Inverters. Your assessment of the system is 100% correct, bad workmanship, > and little or no maintenance. The original design was poorly thought out as > well. The poor workmanship was not limited to the energy system, the > electrical infrastructure had issues as well. The original installer was in > way over his head. I have been to that site at the bequest of the original > owner to repair the wind turbine years ago. > My suggestion is that you evaluate the existing equipment and > infrastructure, and salvage what you can then start with a fresh sheet of > paper. The electrical loads need to be mapped, for example the original owner > had a hot tub at the main house. > The site would lend itself well to a micro grid system. if you like we can > have long discussions about this site and I will be happy to share what I > know about it as well as share my experiences with AC and DC distribution for > off grid sites. > Pieter > > <image001.png> > > From: RE-wrenches <[email protected] > <mailto:[email protected]>> On Behalf Of Foxfire > Energy > Sent: Monday, January 10, 2022 5:35 AM > To: [email protected] > <mailto:[email protected]> > Subject: [RE-wrenches] Transmitting 15kW 3600ft Off Grid. > > Hi Guys, Got a good one for you.. We were tasked to refurbish a Stand Alone > (aka Off Grid) power system on a 100 acre private resort island off the New > England coast a few years back.. The system has a 12kW(AC)/ 48VDC power > center (@120/240VAC) with a 10kW Bergey wind turbine, 3kW of Solar and a 12kW > Diesel Generator.. It currently powers two main lodges and 10 private > cabins.. The system was never installed properly and had significant damage > when we got there (no system ground, evidence of several lightening strikes, > open/corroded connections, and poor workmanship in general) > The new owners want to build a third lodge at the other end of the island.. > Some 3600ft away, and want to feed full power from the existing system to the > new lodge.. Thing is, the new owner is pretty brainy (keeps me on my toes).. > My first thought was to bump the 120/240VAC up to 480VAC and send it on like > 4/0AL and back down to 120/240VAC at the new lodge (we've done it before).. > The new owner wants to launder the AC to DC and back for transmission.. Says > DC for transmission is the new Cats Pajamas because of the efficiency.. News > to me.. Anyone have experience with DC for transmission? Again.. I'm shooting > for 15kW (including 25% for continuous duty), 3600ft, 600V wire (but could go > with a different wire) and a line loss under 5%. TIA db > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > <http://re-wrenches.org/> > > List Address: [email protected] > <mailto:[email protected]> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > <https://www.mail-archive.com/[email protected]/> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > http://www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > Tump > <blocked::mailto:[email protected]%22%20%5Co%20%22blocked::mailto:[email protected]>[email protected] > www.SWNL.net > <blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/> > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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