Solar advice please

PUP Backup said:
Like I said this is overkill and hellava expensive for this application..
You don't need an inverter!
Click to expand...
true true
but then the addiction starts
people add more stuff
cellphones
tv's
dstv
lights
etc etc
hahhaaa, future proof is number 1 :thumbsup:
 
Let's look at the costs: The man had a 6 day outage. Backup for that is an off grid solar installation so lets look at backup for a day:

Option 1:
Inverter R5000
2 100Ah batteries @ R2000 = R4000
Total: R 9000
Assume 8 hours backup if not powering TVs, hair driers etc.

Option 2:
Low voltage UPS R500
1 7Ah battery R250
Spare battery for laptop R600
Total: R 1250
Backup time 8 hours
 
PUP Backup said:
Let's look at the costs: The man had a 6 day outage. Backup for that is an off grid solar installation so lets look at backup for a day:

Option 1:
Inverter R5000
2 100Ah batteries @ R2000 = R4000
Total: R 9000
Assume 8 hours backup if not powering TVs, hair driers etc.

Option 2:
Low voltage UPS R500
1 7Ah battery R250
Spare battery for laptop R600
Total: R 1250
Backup time 8 hours
Click to expand...
you forgot to add solar panels
now OP has power ALL day for laptop and router and a few hrs at night :thumbsup: OP wasnt asking for the cheapest solution
 
PUP Backup said:
Let's look at the costs: The man had a 6 day outage. Backup for that is an off grid solar installation so lets look at backup for a day:

Option 1:
Inverter R5000
2 100Ah batteries @ R2000 = R4000
Total: R 9000
Assume 8 hours backup if not powering TVs, hair driers etc.

Option 2:
Low voltage UPS R500
1 7Ah battery R250
Spare battery for laptop R600
Total: R 1250
Backup time 8 hours
Click to expand...

p1$$ off trying to peddle your kak products here
 
Sinbad said:
Victron 5KVA 48V inverter
BYD 10.25kWh BBox
Smartsolar 250/60 MPPT
10x 330w panels

we don't need no steenking lead acid!
Click to expand...

any specific reason you added the external charge controller?
 
Steamy Tom said:
any specific reason you added the external charge controller?
Click to expand...
What, the MPPT?
This Victron doesn't have a charger built in, panels output 200V, battery won't love that (and nor will the inverter actually)
 
Sinbad said:
What, the MPPT?
This Victron doesn't have a charger built in, panels output 200V, battery won't love that (and nor will the inverter actually)
Click to expand...

lol fair enough i wasn't aware that model didn't have a built in controller
 
Sinbad said:
If you just want backup, why bother with solar?
Click to expand...
There's a perception that 'solar' is the answer to all electricity supply issues and that it replaces grid power painlessly. This is not the case, hence the variations: e.g. backup power, off grid and grid tied systems.
Independence from intermittent grid supply is one thing but installing an off grid system is another thing altogether.
So when someone posts a thread like this one you need to understand where they're coming from...
 
Sorry to hijack the thread. Looking to start migrating some plugs onto solar. Plug usage for the lounge is this :

9a9b57d354679661d7df5d21d14daea0.jpg


What kinda system would be needed to carry this?
 
Pho3nix said:
Sorry to hijack the thread. Looking to start migrating some plugs onto solar. Plug usage for the lounge is this :

9a9b57d354679661d7df5d21d14daea0.jpg


What kinda system would be needed to carry this?
Click to expand...
It looks like the usage there is probably around 2kwh average a day, but over how many hours. Because if you are drawing up to 2.6kwh at a time you need at least a 3kw inverter, but if it is say 500w over 5 hours then you could get away with much smaller. It is much better though to plan for a bigger system up front.
 
Steamy Tom said:
It looks like the usage there is probably around 2kwh average a day, but over how many hours. Because if you are drawing up to 2.6kwh at a time you need at least a 3kw inverter, but if it is say 500w over 5 hours then you could get away with much smaller. It is much better though to plan for a bigger system up front.
Click to expand...

This is over the whole day. So a system for 5 kWh for lights and TV+Internet would work?
 
Pho3nix said:
This is over the whole day. So a system for 5 kWh for lights and TV+Internet would work?
Click to expand...

my whole place excluding the stove and the geyser runs on a 5Kw inverter, but yes obviously if i start up the dishwasher, microwave, washing machine all together i will trip it.

but yes a 5Kw will definitely do it.
 
and the app?

So is that just measuring one circuit or your whole house?
 
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