[RE-wrenches] Snow mitigation

Some time ago there was a post about SMA SunnyBoys that could send current back to the solar panels to melt off snow. This was grid power; but maybe you can use genny or whatever solar power is generated to warm up the snowy panels, presuming some of them are uncovered. Either that or set them

[RE-wrenches] Sol-Ark phantom loads

Just spent yesterday debugging a Sol-Ark 15 kW inverter phantom load weirdness. With Work Mode set at Limited Power To Home it seemed to get a bit schizo, pulling around 6kW in from the grid on leg L1 and around 13 kW on the other L2 leg, with 7kW of PV added. No house loads were involved. The

Re: [RE-wrenches] Inverter output fluctuations

Howie- it sounds like the XW+ is trying to curtail the Solar Edge by shifting frequency, and the loads don't like it. When off-grid and batteries are charged there is no place for all that AC coupled solar power to go. This is an issue windmill folks have too. The solution can be as simple as a

[RE-wrenches] AFCI tripping on SB 4000US-12

You should also check the AC wiring. AFCI is detected as radio frequency noise from some kind of arc fault. It can be either AC or DC arcing. I had some AFCI tripping issues that turned out to be loose wiring at the AC connector inside the SunnyBoy. It was easily fixed by tightening the screws.

Re: [RE-wrenches] Envoy R replacement (Dave Tedayan)

Hi Dave You can get a used Envoy-R to talk to the local microinverters, but you will not be able to reassign it to the new site. You will have to beg Enphase to do this for you. Sometimes this costs money if they think you are reassigning the whole system to a new owner. But why bother? The

Re: [RE-wrenches] wire management on Qcell AC module

No you certainly cannot rely on that tape for long. We use stainless wire clips like Heyco SunRunner or RevRunner attached to the module frame. https://www.heyco.com/Solar_Power_Components/?sub=wire-management The QCells AC modules have the microinverters attached so they hang down past the

[RE-wrenches] SMA Rapid Shutdown and Secure Power Supply

Date: Wed, 27 Apr 2022 12:08:24 -0400 From: Dave Tedeyan To: RE-wrenches Subject: [RE-wrenches] SMA Rapid Shutdown and Secure Power Supply Message-ID: Content-Type: text/plain; charset="utf-8" Hi All, The last SMA-41 inverter I commissioned, had the option for SunSpec rapid shutdown with