GlennWest Posted May 16, 2021 Report Share Posted May 16, 2021 (edited) The Growatt 10k unit I researching states battery cable size is 2*1 awg? Are they saying use 2 cables at 1 awg instead of a larger single cable? https://ginverter.com/upload/file/contents/2020/09/5f63033fb11f1.pdf It is on page 7 in the manual. Tried to do a screenshot but couldn't figure that out. Also in reading USA codes only allowed to parrell 1/0 awg up wire. Undoubtedly not so in China. Edited May 16, 2021 by GlennWest Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
GlennWest Posted May 16, 2021 Author Report Share Posted May 16, 2021 (edited) I have a lot of 2/0 copper. I could parrell that and be good for 400 amps. Likely overkill though. Most i can pull from batteries is 300 amps at 48v. 100 amp bms on each pack. Edited May 16, 2021 by GlennWest Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
oldjohnt Posted May 16, 2021 Report Share Posted May 16, 2021 Glenn FYI here is a wiring size chart for 12 24 and 48 Volt DC systems: Wire Sizing Chart for 12V, 24V & 48V DC Systems | DIY Solar Resources (altestore.com) Here are several other wire size charts, take your pick lol dc cable ampacity chart - Bing images AFTER you determine the ampacity, next compute line voltage drop (current, wire size and distance) Here is a voltage drop calculator Voltage Drop Calculator While I prefer single conductors, if you already have a bunch of 2/0 and can per code use two parallel conductors (390 Amp rated and even if OVERkill for 300 Amps) I have no problem with that. I prefer OVERKILL to reduce line voltage drop versus operating near the edge (IE a bit more line voltage drop) but that's just me. John T Quote Link to comment Share on other sites More sharing options...
hemsteadc Posted May 16, 2021 Report Share Posted May 16, 2021 parrell is fine. Quote Link to comment Share on other sites More sharing options...
GlennWest Posted May 16, 2021 Author Report Share Posted May 16, 2021 John is the 2*1awg mean pararell? I goggled it and can find no results. Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
oldjohnt Posted May 16, 2021 Report Share Posted May 16, 2021 I just don't know what is meant by 2*1 but will guess its two No 1's in parallel ??? Regardless if you already have plenty of 2/0 as I already said I see no problem in using two of those in parallel even if that's overkill. Go for it John T Quote Link to comment Share on other sites More sharing options...
GlennWest Posted May 16, 2021 Author Report Share Posted May 16, 2021 Will do John. Thanks again Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
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