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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2277978 Views)
UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
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Re: Solar Energy, A Complement To FTA by Dam5reey(m): 2:40pm On Jun 12, 2017 |
chris81964: Please go through all my post as regards this matter.. kindly make your own suggestions.. thank you.. 1 Like |
Re: Solar Energy, A Complement To FTA by chris81964(m): 2:48pm On Jun 12, 2017 |
Dam5reey: I read your posts. And I wanted to understand what you were asking him to do and why you felt it made logical sense. I am not going to give a solution. Like a previous poster said. This topic has been covered many times before and he or she will be better served by reading through before taking advice from anyone. |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 3:48pm On Jun 12, 2017 |
earthrealm: Pardon me .. I just remembered a client of mine who uses it and my watts meter results for such a big freezer left me smiling ![]() |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 4:29pm On Jun 12, 2017 |
Dam5reey: U r correct that is y I advised him to sell his 12v n buy a 24v inverter. Even if he buys 60amps cc(price can buy a 40amps cc n 24v inverter) , wch is expensive, he won't b able to use more than 1kw(or a lil above) on the controller b4 it max out. There ll b no panel upgrade. The pic below is a 60amps epever controller
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Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 7:20pm On Jun 12, 2017 |
zeestone99: zeestone, well done. keep up the good works. i only wish other sellers like solar depot, et al will toe this line. i observed that most die-hard retailers are still hanging on to their old high price which they adjusted for when dollar was selling for 450/500. now that dollar is trading below 370 their price adjustment mechanism seem to have gone on sabbatical leave. which way nigeria? ![]() 4 Likes |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 8:32pm On Jun 12, 2017 |
chris81964: Alright.. same happened to me.. I was asked to start reading about 229 pages which might not aplicable in his case, If anyone has time to answer the simplest question it's better to reply or leave the comment.. rather than say go through the thread, without referencing any page number.. 5 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by davodyguy: 9:24pm On Jun 12, 2017 |
Dam5reey: Thanks See image below of what I'm settling for 40A mppt controller and also using a 32A DC breaker to limit the current flowing to the controller to avoid damage.
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Re: Solar Energy, A Complement To FTA by Dam5reey(m): 9:28pm On Jun 12, 2017 |
davodyguy: Good from reviews the Epsolar has inbut over current limiting function.. |
Re: Solar Energy, A Complement To FTA by davodyguy: 9:30pm On Jun 12, 2017 |
Dam5reey: You people don't kill me. You mean I should forget the 32A breaker? And go for 50A? |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 9:34pm On Jun 12, 2017 |
davodyguy: Modified.. what is maximum PV current...? You can attached one of the panel specifications |
Re: Solar Energy, A Complement To FTA by davodyguy: 9:36pm On Jun 12, 2017 |
GeorgeD1: Too many greedy Nigerians Bought two 215/70/16 tyres today at same rate of 460 naira to a dollar. I'm just upset about this 1 Like |
Re: Solar Energy, A Complement To FTA by davodyguy: 9:39pm On Jun 12, 2017 |
Dam5reey: I'm guessing that my panel 4 in number 200w produces about 7.5v |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 9:46pm On Jun 12, 2017 |
davodyguy: Alright one 200W cannot produce more than 9A.. so at * 2 string you will have 18A.. 32A circuit breaker is good. |
Re: Solar Energy, A Complement To FTA by davodyguy: 9:48pm On Jun 12, 2017 |
Dam5reey: Wait o Dam 9*4= 36 and we are using 32A. Are my equipment safe? ![]() |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 9:58pm On Jun 12, 2017 |
davodyguy: In DC breaker calculation, serial connection of panels differs from parallel connection ! If it ain't very clear to you, get an installer to assist you . Cheer's |
Re: Solar Energy, A Complement To FTA by davodyguy: 10:02pm On Jun 12, 2017 |
kiekie1: You're right. There's limit to where I can thread in this regard. Of course did the inverter and connections set up myself, but wouldn't attempt to go solo in this regard |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:03pm On Jun 12, 2017 |
davodyguy: How do you intend limiting current flowing into your 40a mppt with the 32a DCB ![]() |
Re: Solar Energy, A Complement To FTA by davodyguy: 10:05pm On Jun 12, 2017 |
kiekie1: So says the engineer I enquired from and got that advise. |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:12pm On Jun 12, 2017 |
davodyguy: Hmmn , its rare to see an experienced solar tech - engineer give such advice unless if you meant mechanical/civil engineer .. If DCB ratings limits currents , my friend > George D would keep climbing into his ceiling to switch on tripped breakers in his pv combiner box on weekly basis ![]() |
Re: Solar Energy, A Complement To FTA by davodyguy: 10:16pm On Jun 12, 2017 |
kiekie1: See below our WhatsApp chat
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Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 10:23pm On Jun 12, 2017 |
davodyguy: my brother, it's just so disheartening. from solar products to tyres and even commodities the story is the same: artificially high prices totally at variance with realities on the ground. unless they start re-adjusting these absurd prices downwards they stand to lose customers big time. 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 10:25pm On Jun 12, 2017 |
davodyguy: Yeah.. a screenshot of your Panel specifications will help too.. I will make an assumption, say you have 30Vmp and Imp 6.7A You connection will be string 1 two panels in series(60 Vmp, Imp 6.7A) string 2 two panels in series (60 Vmp, Imp 6.7A) Connecting string 1 & 2 in parallel, will be ( 60Vmp Imp 13.4A) The 32A Breaker is ok, but It will not limit current, breaker are like fuse, it work on same principle with Fuse but better, it will trip off in case of current surge 2 Likes |
Re: Solar Energy, A Complement To FTA by davodyguy: 10:34pm On Jun 12, 2017 |
Dam5reey: I'll post images tomorrow As I said, I want to be guided, that's wh I am here The already set up at home now Is 1000watts inverter 2 nos of 200amps batteries of 12v each that I connected myself in parallel, to avoid over voltage to the inverter. The solar system purchased now are as follow 4 nos Panels of 24v 200 watts each. Solar panels are made by Frames We also acquired 40A MPPT charge controller, and was advised to get a 32A breaker. What have we done wrong? And what can be done to remedy the situation? Note, I'm very unwilling to get a 24v inverter for now, until I'm ready for a massive upgrade of say 4 to 4 200amps batteries and sinewave inverter |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:52pm On Jun 12, 2017 |
davodyguy: That name sounds like somebody I know .. Guess u procured the items (panels , inverter, mppt) from him in Lagos ![]() 1 Like |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 12:11am On Jun 13, 2017 |
davodyguy: The 40amps cc n 32amp breaker ll do the job. Carry on |
Re: Solar Energy, A Complement To FTA by efuro(m): 6:08am On Jun 13, 2017 |
GeorgeD1: I do not want comment but after thought I believe there is the need to appeal to marketers on the forum to scale down their pinned-product-prices. their is real competition out there. taking good/standard panels for instance, eg. flames 150w poly/mono PV can be bought at N27k/N30k. but here the cheapest is N35k of course marketers will use their usual bla bla bla or alaba dis alaba that to justify their superficial profits on solar products. however, some of us believe forum patronage will encourage marketers in our small community of solar to grow across length & breath of Nigeria. so the forum should be seen as a place to give rebate (if that word is appropriate here) to members and not just the usual market place. 8 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 8:06am On Jun 13, 2017 |
davodyguy: that ur breaker looks like an ac breaker, if yes...using ac breaker in dc enviroments is not safe/good. what his engineer meant by limiting current by circuit breaker is that, if the juice coming from his panels is over 32amps[max of his scc], then it will trip preventing damage to his scc. am not in surpport of such a setup, cos if ur panels are sized properly, the issue of over current will not arise...n from the 250w x4 panels u have...case of excess current will not arise for a 24v system, but will arise for a 12v system...600w is max recommended for 12v system, thus you may wish to install only 2 panels if you still insist on 12v setup 4 Likes |
Re: Solar Energy, A Complement To FTA by davodyguy: 9:04am On Jun 13, 2017 |
earthrealm: Ok thanks. We can do 200watts X3 then to make 600watts rather than 800 watts( 4 X 200watts panels) But I want to ask this question. Presently, my 1000 watts inverter send 10 amps to each of my 200amps batteries after every one hour charge. Let's assume that the sun shines properly from 10:00am to 3:00pm, that is 5 hours sunshine, How many amps would be sent per hour to the batteries to charge them? cc GeorgeD1 efuro zeestone99 Dam5reey kiekie1 chris81964 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 10:18am On Jun 13, 2017 |
davodyguy: My opinion is connect 800w, your controller will take as much power during cloudy time, and during peak periods current limiting function kicks in From experience... The charge controller only draw what it need to charge your battery from the Panel... Assume battery is almost charge from float to fully charged, it will only draw small power regardless of the Panel watt output... I have seen 470 Watts panel connected to 10A controller.. everything works fine.. just that battery will charge at close to 10A any time of the day from 9am till 4 pm...... during peak periods the remaining 220 watts is lost.. but will compensate during cloud.. 4 Likes |
Re: Solar Energy, A Complement To FTA by Gennextech: 10:19am On Jun 13, 2017 |
we now stock ups and charge controllers please find attached price list
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Re: Solar Energy, A Complement To FTA by chris81964(m): 10:23am On Jun 13, 2017 |
I got invited to a radio show "The Architect" FM 92.3 in Port Harcourt. The hosts Adaora Okoli and Daniel Braid had Ebi Bozimo and me on the show. Enjoy the Podcast. http://atlanticwastepower.com/2017/06/listen-dr-solar-92-3-nigeria-info-port-harcourt-part-1/ 2 Likes |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 10:29am On Jun 13, 2017 |
davodyguy: ok ur panels are 200w, not 250w..perfect then 200w x 3 in series shud be fine. ur 600w 12v setup has the capabilty of bring 40/45amps...thus in real life factoring in losses from cabling, inclination and scc efficiency..you would be getting btw abt 35amps- 38amps max. for ease of calculation lets assume 30amps, the norm is to take 5hrs of sunlight daily, thus 5hrs x 30amps = 150amps, ur bank is 400ah, wch you can theoritically drain/recharge to 300ah, so you can see that ur setup can only supply 50% of your bank capACITY - THIS IS NOT IDEAL LONGTERM, unless your loads are light n u dont drain ur bank heavily. A 24V 200AH SETUP IS A BETTER DESIGN from all angles panels utilization/harvest/batt charging/C/10 etc...... hope you are aware of the term sulphation and C/10? UR BATT BANK NEEDS 10% CHARGING CURRENT TO REDUCE THE EFFECT OF SULPHATION, THUS a 12v 400ah bank needs minimum of 40amps, SOME OTHER BATT TYPES ARE C/8 2 Likes |
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