Hi Ray, We always add a dedicated PV 120/240 VAC Load Center to mount our Enphase CB's in, and the 15A CB for the Envoy's receptacle. This has eliminated all comm. Issues for us.
Chris Worcester Solar Wind Works NABCEP Certified PV Installer Office 530-582-4503 Cell 530-448-9692 Fax 530-582-4603 www.solarwindworks.com ch...@solarwindworks.com From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Ray Walters Sent: Monday, April 14, 2014 11:22 PM To: RE-wrenches Subject: Re: [RE-wrenches] Enphase monitoring picking up other systems Funny the timing of the Wrenches list, just Saturday I added some Enphase inverters to an existing GTB Outback system. The Enphase are not AC coupled to the Outbacks, as I didn't want to get into the battery charging issues, and the customer has plenty of PV relative to the battery size. However, we're having a communication issue as well. I'm guessing that the Envoy can't be on the Outback side of the system with the Enphase inverters being on the grid side. So, is there an elegant solution besides putting the Envoy on the grid side of the system (which is out in the garage) The whole house is on back up, so no grid direct circuits are available there, and the wiring is such that it would not be easy to change that either. I was actually going to add a transfer switch to the Enphase circuit, so that in an extended outage, the customer could have the option of bringing in the Enphase inverters. I have the Enphase breaker in the Outback Flex 500 box already, so at least that would be simple. R.Ray Walters CTO, Solarray, Inc Nabcep Certified PV Installer, Licensed Master Electrician Solar Design Engineer 303 505-8760 On 4/14/2014 12:49 PM, Nick Soleil wrote: Hi Benn, You can remove the microinverters from an Envoy, but it requires a laptop and a network cable. Call me and we can talk. We have a lot of big projects with home builders, and I am more than happy to share our best practices with you. My cell number is 707-321-2937. On Mon, Apr 14, 2014 at 11:42 AM, Benn Kilburn <b...@skyfireenergy.com> wrote: August, I'm being told that "we" (as opposed to "Enhpase") cannot delete or remove rogue inverters from the Array Builder. Enphase has to do this step. And if you just don't include the rogue inverters in the Array Builder you are building for a particular system, you will still receive the production data from the rogues. (2nd hand info, so......?) Louis, Since some of these are home builder's 'show homes' and new home builds, there is the possibility that internet has not always been set up yet, so in some of these cases the inverters may not have been dedicated to a particular Envoy yet. If "we" cannot remove rogue inverters from a particular Envoy, then we will likely just send the serial numbers of the Envoy and respective inverters to Enphase and let them sort it out. We may consider the Array Gun scanner option. Anyone else have any feedback on this option? Cheers, Benn On Mon, Apr 14, 2014 at 12:21 PM, Louis Woofenden <lo...@woofenden.net> wrote: Hi Benn, We've run into these problems when simultaneously commissioning systems in adjacent units of a housing development where we did PV systems on all homes, and 2-3 homes are on one utility transformer. I'm a little surprised that the Envoy picked up inverters from an existing system, unless those microinverters were never associated with another Envoy. My understanding from Enphase is that once they are "bound" to one Envoy, they won't be easily picked up in a device scan. But maybe I'm missing something, or got bad info from tech support. We've definitely had to work with Enphase tech support on a couple of systems to remove inverters from one Envoy, then do a device scan on another Envoy, as August suggested. Another option is to spend the money for the Array Gun scanner (SocketMobile CHS7xi scanner), and use the iOS Enphase Installer Toolkit app to build arrays and "provision" the Envoy, sending the inverter serial numbers directly to the Envoy, without need for a device scan. Not sure if this is worth it at the $450 retail price for the scanner, but if you can find one used, it might be. I recently was able to pick one up for about $250 used. Haven't yet had issues serious enough to require LCFs on residential systems. Crossing my fingers on that one. Best, Louis Woofenden Net Zero Solar, Tucson, AZ On 4/14/14, 9:08 AM, Benn Kilburn wrote: Wrenches, I'm sure i read a thread on this list about dealing with this, i've searched but cannot find it. If anyone recalls the subject line, please let me know. We are dealing with setting up Enphase monitoring in neighborhoods with other Enphase systems nearby and these 'other' systems are being picked up by the EMU. A few weeks ago we finished a 14 module (3.5kW) install and i plugged in the EMU to search for the inverters. As it was picking up the first few inverters, it was showing several hundred kWh already produced??? Not bad for a 14 module system being in operation for 10 min!!! (yes the inverters were new, out of the box) After 30-40 min, the EMU had picked up 28 inverters in total. There were 14 on the system we had just installed, and 14 on a house across the street that we had installed back in Nov'13. I'm pretty sure it had picked up the 14 across the street before picking up the ones we just installed. Funny that we can sometimes have communication issues btwn the inverters and EMU in some houses, and here we have EMU's picking up inverters across the street!?! Anywho... has anyone dealt with this and streamlined a process with Enphase to remedy this issue? Cheers, Benn _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org -- Cordially, Nick Soleil Field Applications Engineer Enphase Energy Mobile: (707) 321-2937 <http://enphase.com/enlighten_content/myenlighten-launch-site/?utm_source=My EnlightenPromo&utm_medium=Email_Sig&utm_campaign=MyEnlighten> <http://enphase.com/enlighten_content/myenlighten-launch-site/?utm_source=My EnlightenPromo&utm_medium=Email_Sig&utm_campaign=MyEnlighten> MyEnlighten is Coming. Get Ready <http://www.enphase.com/commercial?utm_source=email&utm_medium=sig&utm_campa ign=Comm2012> 1420 North McDowell Petaluma, CA 94954 www.enphase.com <http://www.enphaseenergy.com/> P: (707) 763-4784 x7267 F: (707) 763-0784 E: nsol...@enphaseenergy.com NABCEP Certified Solar PV Installer #03262011-300 California C10 Licensed Electrician #986315 Texas Master Electrician #284451 "Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless!" - William McDonough This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. 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