DUNKA: I got a quote of 70, 000.00 per panel from Mr. VITUS when i called him on d phone. gurus kindly advise if dt is a good price or can I get a better deal.

dunca,

i think that's about the best bargain you can get for suntech 280w right now.

some peeps even sell for 120k and above. except maybe you want to go for joy solar?

George_D:

dunca,

i think that's about the best bargain you can get for suntech 280w right now.

That's a wonderful deal, i could get a 1.4Kw solar panel array with my budget.
But Oga George, that means it is about 250NGN/Watt, that one smell like fish o.

bodejohn,

well, these prices keep dropping everyday so don't be surprised. when i started, almost 5 yrs ago,
i bought a 200w sharp panel for a whopping 190k! can you imagine that?

My DC power meter final arrives...

fikfik:

Thanks Uncle George and uncle Bode.

Concerning cable length again. should i maintain the same cable length from the battery banks (2 x 48volts) to the combiner? One bank is close to the combiner while the other isnt that close (but not that far too). Should I use lthe longer cable length on the one cose to the combiner too?

I also need advise on location. i live in a small block of 4 flats and have my inverter and one battery bank in the dining section of my living room. I'm want to add the combiner in the rear balcony (same wall as dining section) and another 48V battery bank. What are your thoughts on this. For security purposes too, should i put the combiner outside on the balcony (we live upstairs) or inside?

thanks!

fikfik,

you must maintain the same cable length for all your strings else the purpose of the combiner would be defeated. use the length of the farthest as your standard measurement.

as for the location, i can only advise that you should study your environment and choose what you think is the better option. if security concerns prevent you from locating it outside then i think you better leave it inside the house. remember that the combiner, inverter and battery bank should all be installed in one location as much as practically possible to prevent voltage drop and power loss.

guys make una no forget me for north o.

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all,

it was a rather dull day today with occasional flashes of sunlight - very much like it has been for
some weeks now. seems we finally entered the thick of the rainy season here.

however, i'm pleasantly surprised to see my charge controllers still able to hit green despite this
unforgiving weather.

load monitor:

still counting down the hours, unplugged!

prag servo, still on holiday!

nice.

with the shunt what is the highest dc current that can pass thru

thanks

bodejohn: My DC power meter final arrives...

TotalGreen: nice.

with the shunt what is the highest dc current that can pass thru

thanks

I currently have a 100A/100mV shunt connected to it.
The meter by itself can handle up to a 10A current without a shunt.

George_D:

dunca,

i think that's about the best bargain you can get for suntech 280w right now.

some peeps even sell for 120k and above. except maybe you want to go for joy solar?

Thank you sir must say it was due 2 yr influence as I told him Warri man referred me. as

George_D: prag servo, still on holiday!

Please wanted to find out if your Prag servo stabilizer is connected to carry the whole load of yr house or did you remove some heavy loads such as waterheater, cooker etc

Thanks,
Does it keep history of records, I need something that can keep records for at list one week

How much does it cost

bodejohn:

I currently have a 100A/100mV shunt connected to it.
The meter by itself can handle up to a 10A current without a shunt.

TotalGreen:
Thanks,
Does it keep history of records, I need something that can keep records for at list one week

How much does it cost

It was about 300 Euros without shipping charges.
It has a Rs485/Ethernet card with monitoring software which i have not tried out yet, so i cannot yet say categorically that it can save history or not. The manuals are bigger than 200Kb I would have uploaded it.
You can send me a PM and i will forward the files to you.

DUNKA: Please wanted to find out if your Prag servo stabilizer is connected to carry the whole load of yr house or did you remove some heavy loads such as waterheater, cooker etc

hello dunka,

the prag servo does not carry the whole house load. if it did i would not have been able to switch it off like the
way i'm doing right now.

as you rightly guessed, the water heaters and cookers are all connected to public power. that being said, every
other house load is being powered from the inverter, namely the deep freezer, fridge, water pump, tvs, fans, home
theater, lighting, etc.

George_D:

hello dunka,

the prag servo does not carry the whole house load. if it did i would not have been able to switch it off like the
way i'm doing right now.

as you rightly guessed, the water heaters and cookers are all connected to public power. that being said, every
other house load is being powered from the inverter, namely the deep freezer, fridge, water pump, tvs, fans, home
theater, lighting, etc.

Thank you sir

all,

another dull day here but a green day nevertheless for my charge controllers.

no sun? no problem!

sukam's power cut timer seems to max out at 99hrs, so looks like unit has reset itself during the night.

now 7hrs afresh and counting!

George_D:

fikfik,

you must maintain the same cable length for all your strings else the purpose of the combiner would be defeated. use the length of the farthest as your standard measurement.

as for the location, i can only advise that you should study your environment and choose what you think is the better option. if security concerns prevent you from locating it outside then i think you better leave it inside the house. remember that the combiner, inverter and battery bank should all be installed in one location as much as practically possible to prevent voltage drop and power loss.

Noted sir, Thanks

George_D: no sun? no problem!

Oga George, what is the combined total of your solar array now?

bodejohn,

my brother i have lost count. maybe i need to climb up and count to be sure

but i think i'm getting close to 7,200w name plate power.

Dear All,

my panel spec is below.

Output power = 260W
Vmp=34.8V
Imp=7.47amp
Voc=44V
Isc=8.09amp


If I connect 2 panels in series strings of 6 (12 panels) that gives me (please correct where wrong):

Vmax= 68V
Imax= 44amps

I have a:
48v battery bank (2 banks)interconnected with 16mm 9ja wire
45 amps MPPT Charge controller 24m from the PV array
PV array connected to solar charge controller with 6mm Nigeria wire
Three 100VDC circuit breakers connected to positive line from PV array and +ve from battery banks


Is this setup optimum??

Thanks

specs

No.
for a 48volt system, it should be
3 panels in series strings of 4 (12 panels)

fikfik: Dear All,

my panel spec is below.

Output power = 260W
Vmp=34.8V
Imp=7.47amp
Voc=44V
Isc=8.09amp


If I connect 2 panels in series strings of 6 (12 panels) that gives me (please correct where wrong):

Vmax= 68V
Imax= 44amps

I have a:
48v battery bank (2 banks)interconnected with 16mm 9ja wire
45 amps MPPT Charge controller 24m from the PV array
PV array connected to solar charge controller with 6mm Nigeria wire
Three 100VDC circuit breakers connected to positive line from PV array and +ve from battery banks


Is this setup optimum??

Thanks

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Power master inverter (48v 5000watt). @ 60k only

Solar Panels 12v 130watt Monocrystalline @ 25k

Solar Panels 24v 230watts Polycrystalline @ 45k

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George_D: bodejohn,

my brother i have lost count. maybe i need to climb up and count to be sure

but i think i'm getting close to 7,200w

George_D:


hello dunka,

the prag servo does not carry the whole house load. if it did i would not have been able to switch it off like the
way i'm doing right now.

as you rightly guessed, the water heaters and cookers are all connected to public power. that being said, every
other house load is being powered from the inverter, namely the deep freezer, fridge, water pump, tvs, fans, home
theater, lighting, etc.

name plate power.

7200W , wow that is massive, hope to move up to that level one day. I bet you could add Air Conditioner to the load if need be, the energy harnessed from the sun should take care of that most especially during the day, that could come handy in the dry season
For instance, I have tested 1 1HP AC with my 3KW set up during the day and the system just harnessed the needed energy from the PV stepping up the instantenous KWs.

fikfik:

Yes, thanks Uncle G. but I also remeber a pix from akiannade (or someone's) installation where he used breakers on both the +ve and -ve lines from battery bank to charge controller. youe cut outs are only on the +ve lines and you tied -ve directly. Whats best practice on this (without being wasteful)?

@all
Concerning the combiner (for hybrid charging systems), what are the things to note here. I see Uncel g's and compare it with the recent one from feasy1's but it seems he just connected everything to inverter wihtout really using a combiner (pls correct me if wrong) which seems neater but is it the right thing to do. Please advise me on rules for cable length in this whole multi-charging system too.

Thanks!

Hi fikfik,
As it has been stated earlier its always good to have breakers installed for obvious reasons.

Please do note that the my system has the breaker installed too. The AC disconnect and Battery disconnect has been integrated to the system and has switches on the left side of the unit.

Cheers