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<p>That's my call too, The Unirac TPM was truly an inferior product,
and would both change tilt and rotate on the pole in high winds.
It needs to be pinned to the pole and have bracing added to hold
its tilt. The other 2 look possibly home made, there are quite a
few of those around; folks have some welding equipment and go for
it themselves. I recently replaced a horrible home made pole
mount made out of Unistrut, the whole thing could barely hold up
the weight of the modules. Yours don't look too bad, but I would
give it the old field test: grab out on one corner and put your
full weight on it to see how it behaves. I also like to shake it
up and down at the right frequency to see how it behaves too. It
really should be strong enough for a person to be able to crawl
around on it. <br>
</p>
<p>The tilt angle looks really extreme, many racking companies do
not rate their systems for tilt beyond 45 degrees.<br>
</p>
<p>Also, I would write up some disclaimer to release yourselves
from liability. It should note the substandard racking, the
potential for failure in high winds or snow loads, and that the
customer has chosen not to replace the racks.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 3/14/19 1:18 PM, Howie Michaelson
wrote:<br>
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<div>Not sure about the grey steel bracketed one, but the
other 2 (?) look like the old Unirac TPMs, which haven't
been in production for more than 15 years (?).</div>
<div>Howie<br>
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<div dir="ltr" class="gmail_attr">On Thu, Mar 14, 2019 at 3:11
PM Lorenzo Ortiz <<a href="mailto:lorenzo@cal-solar.com"
moz-do-not-send="true">lorenzo@cal-solar.com</a>>
wrote:<br>
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<div dir="ltr">Wrenches,
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<div>Anyone recognize these pole mounts? </div>
<div>We adopted a bastard system and are trying to bring
it up to code.<br clear="all">
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<div>Thanks</div>
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<div><span
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<div><span
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