What, where and who do I need for a Solar Starter Hybrid System 2kWh+-

[OSiri5]

Not too familiar with the Solis range but I found one selling for just over R11k, leaving about R8k for panels and a charger, if that's what they mean by current transformer.

It looks well priced, especially those 320W panels.

Be careful of scammers. Do your homework well on the online stores.

Cool thanks.
Its from https://www.turbovent.co.za/

 

[Steamy Tom]

Sundries are fine. Those cost roughly the same all over.
Am worried about the inverter. What should I ask?

for a spec sheet or a model number

 

[OSiri5]

I am looking at this battery perhaps. https://www.solar-shop.co.za/pylont...b-plus-lithium-ion-battery-0712885416998.html

Was even thinking of getting a grid tie option now and then in a few months get the battery and inverter etc. Can one start like that maybe?

Otherwise so far, looking at 3kva inverter and 2.4 battery with 4 panels and then doubling down in a few months again connecting in parallel etc.

 

[Steamy Tom]

I am looking at this battery perhaps. https://www.solar-shop.co.za/pylont...b-plus-lithium-ion-battery-0712885416998.html

Was even thinking of getting a grid tie option now and then in a few months get the battery and inverter etc. Can one start like that maybe?

Otherwise so far, looking at 3kva inverter and 2.4 battery with 4 panels and then doubling down in a few months again connecting in parallel etc.

i have a pylontech, imo this is the way to go at your price point. fyi you can get them slightly cheaper at inverter warehouse.

building your own system you can start how you like really, big consideration here though is that you are going to struggle to find a 3KVA 48V inverter at a decent price, imo you can get a 5KVA axpert for the price rather and not upgrade later.

 

[kombi-man]

Gents, propeller-heads, a stupid but much pondered over question here..

How does one know how many Kw's one needs?

eg: I have 2 x 1200 Watt UPS's at home running two different circuits. One powers various house lights, and one an entertainment plug circuit. Both have 2 x 12 Volt 105 Ah Semi deep cycle batts on each unit, and both have 1 x 300 Watt Panel and a 20 Amp mppt charge controller on each?

Does this not equal 2.5 Kw? in layman's terms? So, how do I determine what size Inverter I would need, and which type would I be looking for? do I HAVE to have a Pure sinewave? There are six or seven different categories of inverters on sustainable?

Sorry for the small Hijack, but hope it contributes a little to the overall Solar discussion.

regards

Alan

 

[Steamy Tom]

Gents, propeller-heads, a stupid but much pondered over question here..

How does one know how many Kw's one needs?

eg: I have 2 x 1200 Watt UPS's at home running two different circuits. One powers various house lights, and one an entertainment plug circuit. Both have 2 x 12 Volt 105 Ah Semi deep cycle batts on each unit, and both have 1 x 300 Watt Panel and a 20 Amp mppt charge controller on each?

Does this not equal 2.5 Kw? in layman's terms? So, how do I determine what size Inverter I would need, and which type would I be looking for? do I HAVE to have a Pure sinewave? There are six or seven different categories of inverters on sustainable?

Sorry for the small Hijack, but hope it contributes a little to the overall Solar discussion.

regards

Alan

how much do you need is equal to how much you use

your total output capacity is 2400W, and each system has potential total of (2520/2) 1260 Watts, so you could run each system for an hour at full load. your panels should technically be able to recharge the batteries but i would still say maybe every now and then to put them on a deep charge via AC

 

[OSiri5]

i have a pylontech, imo this is the way to go at your price point. fyi you can get them slightly cheaper at inverter warehouse.

building your own system you can start how you like really, big consideration here though is that you are going to struggle to find a 3KVA 48V inverter at a decent price, imo you can get a 5KVA axpert for the price rather and not upgrade later.

Hi, Thanks for the input. I was actually considering a 5kva as mentioned in earlier posts. Will do that then. Shot for all the help. Will post again if I get stuck.

 

[OSiri5]

So Finally got a labor quote. Dont worry about the items. I just want to know why all the installation costs?
Battery, Inverter, DB setup etc. Seems steep for installation? Previous thread said it would be about R10k. Also what is that DB setup for R8000?

 

[Steamy Tom]

you are getting screwed on some items/cost points but they neglect to mention others? also i would seriously ask them where is your surge/lightning protection on the pv side and where is the protection on the battery side, this is like R7k in costing they are not including, my guess is they are probably not planning to use any. COC price is a bit steep unless it includes work? Also are they just including PV cable in the installation price for example, and what about the mounting brackets and rails?

there are some factors here that arent obvious, for example are they installing a change over? are they isolating certain breakers? are they installing the change over in a surface mount db near the inverter etc

 

[OSiri5]

you are getting screwed on some items/cost points but they neglect to mention others? also i would seriously ask them where is your surge/lightning protection on the pv side and where is the protection on the battery side, this is like R7k in costing they are not including, my guess is they are probably not planning to use any. COC price is a bit steep unless it includes work? Also are they just including PV cable in the installation price for example, and what about the mounting brackets and rails?

there are some factors here that arent obvious, for example are they installing a change over? are they isolating certain breakers? are they installing the change over in a surface mount db near the inverter etc

Sjew. Thats a lot to think about. I thought it was more "plug n play". Plug A into B, B into C and voila. Lol. Will have to get people to come out and quote and explain all the costs etc rather than thumb sucking figures on a quote.

 

[Steamy Tom]

Sjew. Thats a lot to think about. I thought it was more "plug n play". Plug A into B, B into C and voila. Lol. Will have to get people to come out and quote and explain all the costs etc rather than thumb sucking figures on a quote.

Panels -> PV cable -> Combiner box with fusing -> ChargeController -> Battery(ies) -> fusing -> inverter - > changeover - > DB

(sometimes your charge controller and inverter will be combined thus linking combiner box and batteries straight to inverter, but still batteries should be fused.

that's basically how your setup should look, then at each point you have options/considerations, it is technically plug and play but there are so many variables.

 

[russellw1]

I am looking at this battery perhaps. https://www.solar-shop.co.za/pylont...b-plus-lithium-ion-battery-0712885416998.html

Was even thinking of getting a grid tie option now and then in a few months get the battery and inverter etc. Can one start like that maybe?

Otherwise so far, looking at 3kva inverter and 2.4 battery with 4 panels and then doubling down in a few months again connecting in parallel etc.

You could us a bidirectional inverter like a Victron multi which can work as grit-tie or to boost Eskom power and it can also work standalone during power outages.

 

[TedLasso]

My maths is sh i te, but how many 104ah batteries is a pylontechs 3.5kw battery equivalent too?

 

[russellw1]

My maths is sh i te, but how many 104ah batteries is a pylontechs 3.5kw battery equivalent too?

A 105Ah lead acid battery has only 50Ah of usable power 600Wh (about 50Ah x 12V) when new. A Pylontech US3000 has 3000Wh usable power (about 62Ah x 48V). 4 lead acid batteries will be 2400Wh at maybe 70% efficiency so you will need extra solar panels.