[RE-wrenches] Sunpower micros and mysterious outages

[Ray]

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, Colorado
303 505-8760

On 3/27/17 5:49 PM, Dana wrote:
>
> Check for a loose neutral.
>
> ----------------------------------------------------------------------------
>
> Dana Orzel Great Solar Works, Inc.
>
> *208.721.7003 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.
>
> *From:*RE-wrenches [mailto: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>
> *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 
> <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 
> <mailto: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
>
>
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