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Hi everyone,

Matu here from the Eastrand, tired of Eskom.

Thanks a million for this platform, the information i have acquired just from reading around is massive/impressive.

The current system to be installed in the next week:

  • 8Kw Deye inverter
  • 2x 5.1 kw Volta batteries
  • 10x 545w Panels (JA)

Still have many questions with regards to my geysers, geyserwise, inverter settings, app connectivity, devices comms and solarman but I will get there with some more reading 😀

Estimated daily consumption of +-20kwh and hoping to draw in +-26kwh as per online calculators.

Any red flags or any advice to ask the installers?

Has anyone used It's Home Electrical (Pty) Ltd?

Thanks!!!😀

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Hi Matu,

Don't say goodbye to Eksom just yet, but do look forward to being a lot less reliant on them. There will be days when the sun don't shine, and on those days a grid connection will come in handy. Sure it will be up & down, but if it goes up & down to schedule, then you can figure out when to make use of it.

Go conservative at first. Back up the essentials, certainly leaving out the geysers, the pool pump, and the electric oven. Then watch the system, see how much spare capactity you have and then maybe you can start moving more over to the backed up side of the DB.

Same with settings. Discuss these with the installer, go with their default, but then watch and tweak.

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12 minutes ago, Bobster. said:

Hi Matu,

Don't say goodbye to Eksom just yet, but do look forward to being a lot less reliant on them. There will be days when the sun don't shine, and on those days a grid connection will come in handy. Sure it will be up & down, but if it goes up & down to schedule, then you can figure out when to make use of it.

Go conservative at first. Back up the essentials, certainly leaving out the geysers, the pool pump, and the electric oven. Then watch the system, see how much spare capactity you have and then maybe you can start moving more over to the backed up side of the DB.

Same with settings. Discuss these with the installer, go with their default, but then watch and tweak.

Thanks Bobster, advice is much appreciated!

Definitely will start small and get more into efficiency and extras once i'm more clued up😀

Thanks!

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  • 1 month later...
1 hour ago, Matu said:

Happy to advise that the installation went well and happy with the provider. 😀

Now the real journey begins!

Time to learn

IMG-20230716-WA0001.jpg

IMG20230713133149.jpg

Nice install @Matui would just have fitted 2 x battery fuse disconect units just for the mere fact that you can pull 》185 amps from your batteries and these fuse disconect units vary in quality.

Edited by TaliaB
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16 minutes ago, TaliaB said:

Nice install @Matui would just have fitted 2 x battery fuse disconect units just for the mere fact that you can pull 》185 amps from your batteries and these fuse disconect units vary in quality.

Thanks @TaliaB! It's a 2 pole battery fuse, 2x 160A each if not mistaken there, do you mean I should have 4 fuses?

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19 minutes ago, Matu said:

Thanks @TaliaB! It's a 2 pole battery fuse, 2x 160A each if not mistaken there, do you mean I should have 4 fuses?

2 x fuse disconnect units. 4 fuses.  Yes 2 positive and 2 negative fuses. It is just better for current splitting and if you need to isolate 1 battery for any given reason. The single fuse holder with 2 x 160 amp fuses is rated a bit low. The current draw from the 8kw inverter could be 166 amps without surge so i would have rated the single fuses holder @ 200amps with 2 x 200 amp fuses. 2 fuse holders @ 100amps fuses as the batteries is paralleled each battery 100 amps. Remember the current flow through the battery is in series from the inverter to the pos back through the neg so any of the 2 fuses should been rated at max current draw 8000w/48v= 166amps x 1.25 = 208 amps so standard fuse size will be 200amps.

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Thanks for that! Fully get you now! Will look into it.

How will it work when the batteries are connected in series though? Need to reread this once or twice 😊

Edited by Matu
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22 minutes ago, Matu said:

Thanks for that! Fully get you now! Will look into it.

How will it work when the batteries are connected in series though? Need to reread this once or twice 😊

No your inverter is 48v so batteries always in parallel not series otherwise you get 96v.

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