Dishtech:

I can but I hadly have chance.

olaolu11:
The 219H is chest freezer while the other is giant fridge. How many watts will bith consume per day if i on them for 4hrs every other day?

ojeysky:


My thermocool has a fan, light and buzzer under its lid; this ensures there is equal distributed temperature within the freezer (I love the freezer unfortunately I lost all the features in the hands of kazeem few months a ago when it developed a fault). What's the consumption of your other thermocool?

ceaser:


If the condenser is changed, the new one may not be a good power saver as the stock. Also these Kazeem technicians will install fan once they work on any freezer. That's added consumption.

lexi28:


hi, why don't you buy a 12v Dc fan & a GOTV 12v adapter. connect the adapter to output of inverter, then place fan directly blowing into the inverter. that's what I did with the 3kva VIL inverter whose fan only kicks in at 65°c. I connected the above and placed it to blow air into perforated side vents near the inverter transformer. fan only works when inverter is working. the inverter is much cooler now.
OR
most fans in these portable inverters are evacuators not blowers. the fan is not powerful enough to evacuate heat build up hence increase in internal temperature. can you change direction of flow of the fan, so it sucks outside air and blows over internal components rather than evacuate it? Just reverse/flip placement of the fan. ensure some gaps exist in the casing to allow hot air flow through.

ceaser:


Bro if this freezer is really what Namzy claims, then it's the bomb. Just go for it. Just make sure you go shopping armed with your wattmeter for proper confirmation.

Other factors worthy of considerations though, will include the number of hours it is able to keep foods frosted off power (a factor of insulation), cos you can't leave it working overnight. Also in the rainy season are days of poor solar harvest which ma require some shedding. In such times, good insulation of cabinet freezers come into play.

I'm not happy now cos I should have heard about this freezer 6 months ago when I secured that Thermocool.

But going forward, I think I will take more notice of some selected Hisense products in power saving capacity over Thermocool and LG products that I have grown fond of.

ceaser:


If I were in his shoes, I will consider using AC charger to charge one set of the battery that is not connected to the solar with the AC output from the set connected to solar panels during sun hours. Then do the switch over later. That way, he won't have to use two SCCs and he won't have to divide his solar panels into two to create two different charging circuits.

The AC charger will ensure that the battery is topped up as early as possible and the charging functions of the chargers are automatically turned off once the battery is full, hence he needs not worry about overcharging his batteries with AC charger

ceaser:


I think you should take the pictures of the name plate (appliances have it slapped on their back) instead of the products name and model. It will have all the information you need, or at least most of it.

olaolu11:
This battery level signal at back of my inverter, how is it used? Do i have a meter connected to it or what?
And the fan is no longer working. Can i diy replace it?

ceaser:


How much is the
12v 12ah
12v 18ah?
I've had pretty disappointing experience with 18AHs (about 5pcs so far) that I used, all bought off of Konga at different times from different sellers. Perhaps those I bough then were expired ones.

Do you have the 12v 24ah?

mctfopt:


If you use flooded cell and have the sensor cable connected, it'll alert you when to top up distilled water.

ceaser:


Thanks baba.

See ehn, that thing, I was literarily struggling with it for the better part of yesterday. I guess being pressed for time also contributed to the problem. I have only yesterday and today to get things right before I'm off again. Yesterday I burnt off another 12 volt digital temperature controller that
I only hope those local computer accessories shops stock PC fans that I can work with cos I only have one left now, in case it also gets blown

ceaser:


If I were in his shoes, I will consider using AC charger to charge one set of the battery that is not connected to the solar with the AC output from the set connected to solar panels during sun hours. Then do the switch over later. That way, he won't have to use two SCCs and he won't have to divide his solar panels into two to create two different charging circuits.

The AC charger will ensure that the battery is topped up as early as possible and the charging functions of the chargers are automatically turned off once the battery is full, hence he needs not worry about overcharging his batteries with AC charger

dragnet:

are AGM same as VRLA ?

tchijioke:
Fairly used and fully functional Famicare 1500VA 12v hybrid inverter up for grabs...I need to sell it off cos am considering an upgrade...Price very attractive.

Dishtech:

The link you posted is not available so I don't know what it means

generationz:



You are lucky

olaolu11:


Car battery charger. Is it powered with car, phcn/gen or solar

microgiant:


Pictures
1. Used battery
2. New batteries
3. Battery name plate
4. used battery and AC DC chargers (middle man suggested we test them, because it was noticed that some chargers were faulty.)

lexi28:


hi, is the link you used to buy the new batteries still viable?

what cost are they now?

thanks

Easylearner:
Can anyone refer me to a table for wire sizing?

Namzy:

Here an estimate

lexi28:


hi, congrats you have come this far.

1. your inverter and batteries have operating voltage of 12v I assume?

2. the 250-300w panel operates best at 24v.

3. your pwm is most likely a 12-24v auto controller.

4. if the inverter is confirmed as operating on 12v, I suggest you buy 150-160w panels instead.
5. if you are using only one 100ah battery, optimum charging current (C/10) is 100/10= 10amps. your panels must produce MORE than this, taking into account efficiency of the panel and insulation levels at your location.

6. the maximum current from a 150w panel is less than 10a, about 7-8amps depending on the brand. so you will need more than just one panel. taking onto account, your location which determines hours of insolation available and probable time of use of the inverter ( most likely daytime - since it is an office)...you may need at least 2-3nos of 150w panel.

7. panels are oversized to subsidize the current required by daytime connected loads, like office equipment. this method prevents entire current to my exceed safe discharge rate of the batteries.

8. safe discharge rate is max C/20 of the total capacity of the batteries installed. e.g 100ah has a safe discharge rate of 100/20= 5amps DC. at 12v that is a equivalent to a load of 12*5= 60w.

9. so in summary, you will require
1nos 1kv/12v inverter
1nos 30a pwm controller
1nos 100ah battery
2/3nos 150w panels( connected IN PARALLEL)
installation accessories like DC breakers are usually standard.
you need a breaker to be able to isolate the PV unit.
you need a breaker to be able to isolate the batteries too.
a SPD ( surge protective device) is usually required on both AC& DC sides of the system. this greatly increases cost.

cables:
PV cables: you go for 3nos panels, you need cables to bear 1.25*Isc*3 amps. let's say Isc(check panel specs at the back of the panel) is 9amps, you will need cable that can safely conduct 9*1.25*3= 33.75a at 12v over THE REQUIRED DISTANCE FROM LOCATION OF PV TO YOUR CONTROLLER. use a minimum of 10mm PV flex ( student price - just go for full core ordinary 10mm not flex, to save cost)

Battery cables: I doubt you will load the 1kv to its load rating. however your DC BATTERY cables must be rated for the highest continuous load current expected. so that's 1000/12 = 83amps at 12v. (practically a 25mm cable should do)

there are actually websites where you could check the required gauge of cables for DC projects. you can surf the web for that.


since it is a school project you need not go ballistic in expenses, you are required to demonstrate working proof of concept. so leave out the american brands of stuff. a visit to Alaba will suffice or some good natured vendor here will do the us the honor of giving you a student discount.

peeps, let's get our guy over the line!

Horlaarsco:


I got a 150ah 12v battery
2 pieces of 150w solar panel
1kva pure sine wave inverter..


About the connection I got confused with the wires in the inverter how do they go?

Horlaarsco:


I got a 150ah 12v battery
2 pieces of 150w solar panel
1kva pure sine wave inverter..


About the connection I got confused with the wires in the inverter how do they go?

mctfopt:


Check diagram

dragnet:

are you not supposed to be doing a project? you should do some research, some of the questions you're asking shouldn't be asked by someone carrying out a project in power.