I do know that powder coating is essential in protecting switchgear in or near a marine environment. We provided pictures of dc disconnects with and without to SolarPro. Those that did not have it, had to be replaced within one year. The equipment was 600 yards from the ocean.

We have been only installing Enphase in this environment when our customers are not opting for battery systems. So far in two years no failures for four residential systems.


Chris



On 9/15/2016 12:09 PM, William Dorsett wrote:

It makes you wonder about Enphase’s decision to drop the powder coating on their current 215’s. 250’s I don’t know.

*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *August Goers
*Sent:* Thursday, September 15, 2016 10:38 AM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] micro-inverters

Here’s a pic of an M210:

burned enphase m210.jpg

I guess a picture is worth a thousand words.

August

*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org <mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *frank -bz products
*Sent:* Wednesday, September 14, 2016 12:25 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] micro-inverters

Re 190's.

Not much to learn from dissecting a swollen 190. Most of the time the swelling is caused by electrolytic capacitors that have failed. Some very high current capacitors actually have brackets to bolt them down to minimize swelling.

Frank BZP.

BZ Products INC.
8801 Gravois Rd.
St.Louis MO 63123 USA
314-644-2490
www.bz-products.net <http://www.bz-products.net>

On 9/14/2016 1:58 PM, Benn Kilburn wrote:

    You guys should really cut one of those swelled up ones and share
    the photos with us :)


    Benn Kilburn

    SkyFire Energy Inc.

    780-906-7807


    On Sep 14, 2016, at 11:14 AM, Jerry Shafer
    <jerrysgarag...@gmail.com <mailto:jerrysgarag...@gmail.com>> wrote:

        The 190's had component issues which case them to balloon up
        Jerry

        On Sep 14, 2016 10:11 AM, "William Miller"
        <will...@millersolar.com <mailto:will...@millersolar.com>> wrote:

        Colleagues:

        We have M190s fail in beach installations. Some have had the
        cases swell up like there is a tumor inside. I haven't cut
        them open to see what's inside because they need to go back to
        manufacturer.

        William


        On Sep 14, 2016, at 9:32 AM, Jerry Shafer
        <jerrysgarag...@gmail.com <mailto:jerrysgarag...@gmail.com>>
        wrote:

            Mike
            I also work near the ocean, its all around me here in
            Hawaii, we have had the 190's fail but not to
            environmental conditions and very few issues with 215's.
            Do you have any pics of the damage as l have seen very
            little salt issues.
            Jerry

            On Sep 13, 2016 9:11 PM, "Mike Nelson"
            <mdelectricso...@gmail.com
            <mailto:mdelectricso...@gmail.com>> wrote:

            I've had so many Enphase failures it's kind of ridiculous.
            We install most of our systems near the ocean so corrosion
            has played a big factor. The newer micro inverters are
            holding a much better, 215 and 250's. I have learned over
            the years that SMA makes the best product, and I mostly
            stick with them. Sometimes micro inverters are requested
            or really fit the installation particulars, so I still use
            them occasionally. I haven't yet tried solar edge.

            Michael D Nelson

            MD Electric & Solar, Inc.

            707-684-0064 <tel:707-684-0064> mobile

            707-884-1862 <tel:707-884-1862> office

            www.mdelectricsolar.com <http://www.mdelectricsolar.com>

            Sent from my iPhone


            On Sep 13, 2016, at 6:23 PM, Rebecca Lundberg
            <rebecca.lundb...@gmail.com
            <mailto:rebecca.lundb...@gmail.com>> wrote:

                Esteemed wrenches,

                I'm hoping the experience of this list can help give
                us a broader perspective on the current market
                performance and as a secondary concern, tech support
                (or lack thereof), from solar micro-inverter
                manufacturers.

                Are others having much trouble with micro-inverters?
                We have had repeated issues with several different
                brands on our systems in Minnesota:
                - 8 Enphase systems with mostly M210 and M215, have
                had to repeatedly go back to sites to replace units.
                The new replacement ones seem to be lasting better (we
                sure hope they will). Enphase is harder to contact in
                recent years, but we're happy they at least provide a
                predictable stipend. Are you also having to replace a
                lot of this brand of product? Are the newer models
                holding up better?

                - We gave a new inverter busbar design concept a try
                (tenKsolar) and though the micro-inverters were
                supposed to take turns and be 'redundant,' the ones
                with APS micro-inverters needed 100% replacement and
                the ones with Lead Solar micro-inverters have a
                problem where if one of them fails it appears to send
                a signal to all the rest so the entire busbar stops
                working -- in action it's far from redundant. When we
                purchased the tenKsolar Rais Inverter Bus (RIB) the
                spec sheet didn't tell us what brand of micro-inverter
                they would use as the OEM so we couldn't research the
                viability of the product or company or warranty
                stipend (or lack there-of) of the micro-inverter OEM.
                We assumed it was a tenKsolar product and they would
                provide warranty replacements, service, and tech
                support, but our experience has been far from that.
                When something goes wrong tenK says 'it's not our
                product that's failing' because they don't actually
                manufacture the micro-inverter (it's an OEM), the
                micro-inverter company says 'it's not our product'
                because tenKsolar has it wired and used in a very
                unique manner specific to the tenKsolar product, so
                both manufacturers are backing away from any
                responsibility. A 25-year warranty on the inverter
                busbar is a great concept but if/when something goes
                wrong there is no support and no apparent warranty at
                all except maybe they will send us a new component
                that needs several hours of work to re-install, so
                either the installer does the warranty work for free
                or the customer has a very unexpected expense to get
                their system back up and running a year or two after
                it was installed; we think both scenarios are
                unacceptable (from our installer perspective :-), do
                any of you have experiences you can share here?

                I'm wondering if the climate in MN makes us an
                anomaly. Based on these micro-inverter experiences we
                feel like the Rapid Shutdown rule has forced us to use
                dc optimizers on residential applications whether we
                want to or not -- is that pretty much what all of you
                are doing too?

                Rebecca Lundberg

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