[RE-wrenches] Delta LAs

[Nick Soleil]

Hi Kristopher:
    How about not using them.  I refer to lightning arrestors as lightning 
faeries.  We install them to make us feel safe.  They are there to protect our 
equipment, but we aren't really sure if they work.  They are inexpensive enough 
to install, but don't really do anything.  When I have seen failed lightning 
faeries they are always next to burned up electronics.  They don't have a UL 
listing, and if they fail, they cause a fault condition.  

    I used to say 'they are an inexpensive first line of defense.'  Now I just 
don't use them.
    I do find 'Polyphaser' works, though.  But they cost almost as much as new 
equipment.  I also think that AC surge suppresion devices are smart.

 Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell:   707-321-2937
Office: 707-789-9537
Fax:    707-769-9037




________________________________
From: Kristopher Schmid <solman at legacysolar.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Sent: Tue, September 14, 2010 6:29:45 AM
Subject: [RE-wrenches] Delta LAs

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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