[RE-wrenches] Ground Mount with cable anchors

[Benn Kilburn]

Glenn,
I've installed an 80+kW and a couple 10+kW systems using this Nuance
system.  They are assembled fairly quickly and the legs are adjustable for
uneven ground, which is nice.
The ease of driving the cable anchors into the ground will, of course,
depend on the site.  Luckily, i had no issue with rocks and the only real
issue i had driving the anchors was the driving rod separating once or
twice (due to the length of anchors for our location, we needed a 2-piece
driving rod).
Testing the (pull-out strength) anchors is a bit cumbersome and we have not
come up with a way of re-testing the front ones once the mods are
installed.  Make sure you use a scale that has a "max pull" feature to hold
the max pull-out strength otherwise the numbers are constantly moving and
difficult to read.
Hopefully they have added leg braces to the front legs where they are
needed more so than just on the back legs.  If they haven't, then i suggest
requesting them as the front legs *will* buckle under high wind from the
north.

I'm not convinced that they are a solid ground mount solution as the
cable-anchor system does allow for some movement so they will allow for the
full array/rack to shift and move, as i have seen on the 80kW system.

<http://www.skyfireenergy.com>
Benn Kilburn
CSA Certified Solar Photovoltaic Systems Electrician, SkyFire Energy Inc
Employee Owner
14515 - 121A Ave NW | Edmonton, AB | T5L 2T2
Direct: 780-784-1706 | Office: 780-474-8992
*www.skyfireenergy.com <http://www.skyfireenergy.com/>*
<https://twitter.com/SkyFireEnergy>
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On Mon, Sep 9, 2019 at 1:31 PM Jerry Shafer <jerrysgarage01 at gmail.com>
wrote:

> Wrenches/Glen
> I know nuance, they must be trailered or crained into position, leveled on
> site and cables are driven in and pre-loaded and cable locks installed. I
> have there products around California along with the predecessor. Delivery
> can be an issue and there team does the cables so that's something to
> consider too. They are fast to install, pre-layout the conduit and drop and
> very quickly you are up and running. We have also done there blasted
> version with concrete blocks or even just 36" pin anchors
> Jerry
>
> On Mon, Sep 9, 2019, 12:09 PM Glenn Burt <glenn.burt at glbcc.com> wrote:
>
>> Hello Wrenches,
>>
>>
>>
>> We are looking at alternatives to pile driving and helical piles and
>> concrete piers for small residential ground mount systems.
>>
>> I have just found Nuance Energy who makes a system that is basically set
>> on the grade, and with cables and pivoting duckbill earth anchors and
>> attached cables to secure it.
>>
>> Does anyone have any experience with this system specifically?
>>
>>
>>
>> Thanks in advance!
>>
>>
>>
>> Best regards,
>>
>>
>>
>> Glenn Burt
>>
>>
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