lightning arrestors [RE-wrenches]

[Nick Nicholas, APS]

Brad and wrenches:
    If I remember correctly, the Sunroof Systems from SAPC first utilized
the LA-302-DC, which is rated for 0-250 VDC, but more recently utilized the
LA-302-R, which is installed on the AC side.  I never understood why the
Sunny Boy systems would not use the
LA-602-DC, which is rated for 0-600 VDC.  If we are installing these
lightning arrestors to provide peace of mind, would it be more appropriate
to call them lightning faeries?  If a non-UL listed lightning fairy is less
valuable than none at all, why would we consider any lightning protection?
I am partially
    Also, my nicest systems utilize the Polyphaser 50A- Negative Ground
lightning fairy.  I was told that some voltage drop occurs while passing
across lightning arrestors that are placed in-line of the DC circuits.  Is
this loss significant?  Should it be designed for?  I will be commissioning
a system with four polyphasers later this month.  The 6.6 kW arrays will be
installed as part of an SEI workshop next week.  All right, free labor!
Alternative Power Systems
www.alternativepowersystems.com
aps at sbcglobal.net
135 Colfax Ave.
Grass Valley, CA 95945
(530) 274-0588 phone
(530) 274-0589 fax
----- Original Message -----
From: "Brad Bassett" <bsbassett at earthlink.net>
To: <RE-wrenches at topica.com>
Sent: Thursday, March 06, 2003 7:58 PM
Subject: RE: lightning arrestors [RE-wrenches]


> Bill and all,
>
> The lightning arrestors previously used in the Schott Combiners are no
> longer UL listed and so are no longer installed in the combiners.
>
> Brad
>
> Bill Brooks wrote:
> I believe Schott
> > Applied Power has listed a high voltage arrestors in their string
> > combiner-not positive.
> >
>
> Brad Bassett
> Schott Applied Power
> Tumwater, WA office
> bsbassett at earthlink.net
>
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