[RE-wrenches] Sunpower micros and mysterious outages

Dan Fink danbob88 at gmail.com
Tue Mar 28 20:05:28 PDT 2017


Seek Thermal also has some nice, inexpensive thermal imagers that attach to
smartphones. Paid for the $250 cost on its first battery bank service call.

Dan Fink
Professor of Solar Energy Technology, Ecotech Institute
IREC Certified Instructor™ for:
~ PV Installation Professional
~ Small Wind Installer
Executive Director, Buckville Energy
NABCEP Registered Continuing Education Providers™
970.672.4342



On Tue, Mar 28, 2017 at 12:09 PM, Ray <ray at solarray.com> wrote:

> An IR camera may be helpful.  FIir has some really affordable models now,
> I have the TG 167 which is plenty of resolution for electrical. They can
> find problems in load centers really fast; we found an overloaded neutral
> the other day we would not have noticed otherwise.
>
> R. Ray Walters
> Chief Technical Officer, RemoteSolar.com
> BS Mech Engineering, 1988
> Former NABCEP Certified, 2004-2016
> Licensed Master ELectrician, Colorado303 505-8760 <(303)%20505-8760>
>
> On 3/27/17 5:49 PM, Dana wrote:
>
> Check for a loose neutral.
>
>
>
> ------------------------------------------------------------
> ----------------
>
> Dana Orzel                       Great Solar Works, Inc.
>
> *208.721.7003 <(208)%20721-7003>                       dana at solarwork.com
> <dana at solarwork.com>*
>
> Idaho Contractor - # 028765          Idaho PV # 028374
>
> NABCEP # 051112-136                       www.solarwork.biz
>
> *"Responsible Technologies for Responsible People since 1988"  *
>
> *P* Please consider the environment before printing this email.
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>
>
> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org
> <re-wrenches-bounces at lists.re-wrenches.org>] *On Behalf Of *August Goers
> *Sent:* Monday, March 27, 2017 11:55 AM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
> <re-wrenches at lists.re-wrenches.org>
> *Subject:* Re: [RE-wrenches] Sunpower micros and mysterious outages
>
>
>
> Strange one. I would be surprised if the PV system has anything to do with
> this. We’ve experienced strange electrical intermittent problems and they
> have almost always been related to grounding or neutral problems. I realize
> that two different electricians have checked out the site, but maybe they
> missed something like a loose neutral (check all the way back to the
> service point of connection). It might be worth calling the utility out as
> well incase their feed has problems.
>
>
>
> August
>
> Luminalt
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
> Behalf Of *Hilton Dier III
> *Sent:* Monday, March 27, 2017 9:04 AM
> *To:* re-wrenches at lists.re-wrenches.org
> *Subject:* [RE-wrenches] Sunpower micros and mysterious outages
>
>
>
> Friends of mine got a Sunpower system installed last year. Ever since then
> they have had intermittent problems with circuits in their house going dead.
>
> The array is 14 each Sunpower SPR E20 327 C AC. The array is mounted on a
> corrugated steel roof on their garage, about 20 feet from the house.
>
> What happens is that a circuit in their house will either go dead or brown
> out so lights barely glow. This happens to various circuits and at any time
> of day or night. The rest of the circuits will work fine and the event will
> last an hour or two. The breakers don't trip. They have had two different
> electricians there to check the house wiring and it's all solid.
>
> Any ideas? Some kind of metal roof capacitance?
>
> Many thanks,
>
> Hilton
>
> --
>
> Hilton Dier III
>
> Missisquoi River Hydro
>
> Renewable Energy Design
>
> 453 East Hill Rd.
>
> Middlesex, VT 05602
>
> Tel: 802-223-6652 <(802)%20223-6652>
>
>
>
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