You should be able to parallel 6 CTs (3 per phase) as long as you get the phases and directions right. The question really comes down to whether the Sol-Ark can handle the current from 800A at the CT ratio (which I believe is 2000:1). For practical purposes, on an 800A service, particularly residential, you will probably never see more than 600A, so it would probably be fine.
But I would like to know what Sol-Ark says about this. It does not appear to be documented. For the 30K and 60K they have recommended CTs for up to 1200A. I'm not sure if 600A measurement is a hard limit for the 15K considering that's the largest single CT they specify in their documentation. Jason On Thu, Jul 18, 2024, 7:23 AM Chris Sparadeo <[email protected]> wrote: > Hi Jason, > > Sorry for not clarifying. This is a export limited scenario, so CTs would > still be required. > > > > On Thu, Jul 18, 2024 at 6:51 AM Jason Szumlanski < > [email protected]> wrote: > >> This may or may not be helpful, but are you sure you need the CTs? They >> are not always required. You would need them for power export limiting or >> grid peak shaving, but for straight grid-tied with or without battery >> backup, you don't need them. >> >> Jason Szumlanski >> Florida Solar Design Group >> >> >> >> >> On Wed, Jul 17, 2024, 8:41 PM Chris Sparadeo via RE-wrenches < >> [email protected]> wrote: >> >>> Hey there wrenchers, >>> >>> I am working on a larger project with 6 Sol-Ark 15K units and an 800A >>> service. The main service conductors are 3 parallel runs of 400 kcmil. I am >>> wondering how to CT these conductors from the master inverter. Sol Ark tech >>> support has not been very helpful so far. I have the included 300A CTs >>> ....and I do know that they make a 600A CT, but its physical size and >>> rating aren't a good fit. Does anyone have experience with either a Sol Ark >>> or third party CT that might fit this 800A configuration? >>> >>> Kindly, >>> >>> Chris Sparadeo >>> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: [email protected] >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. When one doesn't work, try >>> the other: >>> https://www.mail-archive.com/[email protected]/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >>>
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