Recent content by DCDave

Any suggestions on "Near free ware" for creating visual image of the flow of PV to Charger/Controller, with batteries, switches and disconnects? Something like this one? Note: On Youtube I found someone posting several diagrams, he listed a service to draft up one for you, but at $375,/hr...

My Combiner box is a re-purposed 125a service panel with a new Din rail and two 63A breakers installed with the buss bar pictured in my response above on 8/26 with 8 connections for breakers. (I'll attempt adding photos later). Made a custom breaker cover plate, using 22 gauge galvanized, and...

Mopat and Hedges, From: Sep 16, 2020 I need an 2S 7P configuration, per Ian delivering 125volts and 42Amps at the charge controller, keeping voltage under the required 145VOC /Vdc. So my current systems is limited to 14 of my 20 panels, in a 2-Series x 7-Parallel to achieve this maximum...

Following your advice I ordered 6 AWG red and black fine wire cables for the long run from the combiner box to the Solar Charger, and we ordered the Midnight solar 3 breaker combiner box. WIth a 63a Midnight Solar breaker. I do need help to figure out how to combine the 14, 327v PV panels...

Am I configuring this correctly? 7 PV's on two strings, ISC of 6.48A each, 7 x 6.46 = 45.22 amps per string. So do you use a 50A DC breaker or 40A DC breaker?

* I did receive the 7 to 1 connectors and have my doubts, so I am interested in a combiner box option, as outlined in my set up photo. * Solar panel delivery wire size: 10 AWG * Amps Current IMP 5.98, Short circuit amps ISC 6.46 Maximum series fuse 15 amps * Midnight Solar combiner box, instead...

* I did receive the 7 to 1 connectors and have my doubts, so I am interested in a combiner box option, as outlined in my set up photo. * Solar panel delivery wire size: 10 AWG * Amps Current IMP 5.98, Short circuit amps ISC 6.46 Maximum series fuse 15 amps * Midnight Solar combiner box, instead...

Thanks for the insight, to Hedges, Mopat, Craig and Steve_S. I ordered some 7 to 1 connectors for a 2S 7P panel input. Now I need some racking for the panel mounts on the 40' container.. Suggestions ?

FYI, So Ian confirmed VOC and V- dc is an interchangeable term, and I verified it on the fine print on the side of my Growatt. I need an 2S 7P configuration, per Ian delivering 125volts and 42Amps at the charge controller, keeping voltage under the required 145VOC /Vdc. FYI This allows us to...

To Steve_S, Good tip, this 40' can is water tight "I was told", and this is a good point to keep in mind possibly placing desiccant inside and venting to the outside to remove the "Sweating" of the big can. My location is in the Southwest but temps do fluctuate greatly, summer to winter due to...

This summary may clarify my questions around calculating solar panel maximum count for the Growatt SPF 3000TL LVM I think I see why I have been confused: * My new SPF 3000watt TL LVM at 80 amps is actually 4500watts. * I need the VOC of my Solar panels AND from VOC from Growatt 3000Watt TL...

So I have the of the manual, I was going by P2. Features and P5. Battery Connection (LVM 48P = 82amps) https://watts247.com/manuals/gw/Growatt%20SPF%203000TL%20LVM%20Series%20User%20Manual.pdf To Mopat: From the PDF Manual P9. Yes, 145 Voc, PV array MPPT Range 60-115vdc, (Minim 34Vdc) So I...

Hedges, This description helps greatly; Growatt 3000TL LVM * "Inbuilt MPPT 80Amps per the manual" Not sure if that is a misprint. Manual later states, "PV connection, SPF 3000TL LVM Typical output 80 Amps".

We are starting this off grid project with the following equipment just received: Parts, starting place; * 40' container located at 6800' Summer 97 degrees, Winter 10 degrees. * Growatt 3000w 120v output, 48vdc input from Watts247 * 20 solar panels, 327w used Sunpower * 800KW Lithium, 48v BMW...