[RE-wrenches] Delta LAs

[Kelly Keilwitz]

All,
Our AHJ's started making us take the Deltas out a couple of years ago, as
they are not listed equipment. We kept ordering them for awhile, thinking
they were necessary, cheap insurance, intending to return after the
inspection and put 'em in. We now have a large, dusty stack of uninstalled
LA's on a shelf in the shop.....
-Kelly

Kelly Keilwitz, P.E.
Whidbey Sun & Wind
kelly at whidbeysunwind.com
360-678-7131
NABCEP Certified PV Installer

On Tue, Sep 14, 2010 at 8:39 AM, August Goers <august at luminalt.com> wrote:

> All -
>
> I guess my thought is a little off topic, but are lightning arrestors even
> worth using at all? My logic has always been that if lightning does indeed
> strike that it's likely going to blow the arrestor and and inverter. We
> don't have much of a lightning issue issue in the Bay Area so I don't have
> any direct experience.
>
> Best,
>
> August
>
> On Tue, Sep 14, 2010 at 6:29 AM, Kristopher Schmid <solman at legacysolar.com
> > wrote:
>
>> It is quite ironic that just a week after I posted a question to the group
>> on testing the integrity of lightning arrestors, I had one apparently
>> faulty
>> out of the box.  The manifest of this was interesting: when the AC LA
>> (LA302R) was connected in parallel on the AC input to a SB3000 inverter,
>> there was 125vac neutral to L1, 125vac neutral to L2, and 1Vac L1 to L2.
>> SMA tech support suggested the LA as the issue and sure enough, it was.
>> Attempting to test good and faulty arrestors with an ohmmeter gave the
>> same
>> result - off scale open.
>>
>> Any thoughts or comments from the group?
>>
>> Kris Schmid
>>
>> Legacy Solar
>> 864 Clam Falls Trail
>> Frederic, WI 54837
>> 715-653-4295
>> solman at legacysolar.com
>> www.legacysolar.com
>>
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>
>
> --
> August Goers
> VP, Engineering
>
> Luminalt Energy Corporation
> 1320 Potrero Avenue
> San Francisco, CA 94110
> O: 415.641.4000
> M: 415.559.1525
> august at luminalt.com
>
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