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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 IYGEAL(m): 7:56pm On Apr 01, 2021 |
hardywaltz: 1 Like |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 9:11pm On Apr 01, 2021 |
hardywaltz: Reach me for contact of someone that could possibly have OR maybe he is here as well |
Re: Solar Energy, A Complement To FTA by olopan(m): 9:24pm On Apr 01, 2021 |
Contact Mr Chris of AWPS, I believe he will be of help. hardywaltz: 2 Likes |
Re: Solar Energy, A Complement To FTA by Integratedpower: 9:57pm On Apr 01, 2021 |
Please house, I need a suggestion on good 24v 2.5kva or 3kva pure sine wave inverter to buy. Also can I join 300 watts *2 solar panels with 250watts *2 panels |
Re: Solar Energy, A Complement To FTA by ebocoms: 10:00pm On Apr 01, 2021 |
Thank you for the information. NiyiOmoIyunade: 1 Like |
Re: Solar Energy, A Complement To FTA by ojesymsym: 10:50pm On Apr 01, 2021 |
There used to be a literature back in the days suggesting that having more than one earthing was bad practice. Never really agreed with it then. NiyiOmoIyunade: |
Re: Solar Energy, A Complement To FTA by wilmaria14: 2:24am On Apr 02, 2021 |
Go solar e no go cost u much new deal in town works on it own u only need d sun nothing more make ur house look spectacular all nite 5k u no go believe am
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Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 8:09am On Apr 02, 2021 |
Can you provide a reference please? AFAIK, all certifying authorities that issue code and regs agree that multiple ground rods reduce the effective resistance and therefore increases the effectiveness of earthing. The trick is to space the sunken rods apart 2 to 3 times their depth. What is frowned upon is isolating the ground rods hence all earth installations in a facility must be bonded together - this is primarily for personnel safety as the ground between two unbonded rods could become a conductor and kill persons or animals caught in the line of fire - apparently this used to happen a lot in the U.K and North America on farms and so on. ojesymsym: 1 Like |
Re: Solar Energy, A Complement To FTA by olopan(m): 8:27am On Apr 02, 2021 |
Nice contribution, being toying with the idea of using multimeter but no way around it except using normal L-P.E or N-P.E But How much will this earth tester cost? I used it during one of Schneiders training but theirs is more fancier than the displayed one here. NiyiOmoIyunade: 1 Like 1 Share |
Re: Solar Energy, A Complement To FTA by microgiant: 8:32am On Apr 02, 2021 |
NiyiOmoIyunade: Thanks for the clarification. I understand what you meant is you can have multiple earthing rods, but once it is tied together they act as one massive earthing rod, with earthing connected to the nearest rod. What ojesymsym referred to, is also correct, based on your explanation. Some people use multiple earth rods, which are isolated from each other in the same building, which I understand is what this literature say is "wrong". |
Re: Solar Energy, A Complement To FTA by ojesymsym: 8:44am On Apr 02, 2021 |
Thanks both of you for the clarification, but somehow I still do not really agree with the reasoning that having isolated earthing not bounded together should poise that much of a problem. My common sense engineering knowledge makes me think that such charges will look for the lowest and nearest resistance to discharge, in that case a nearby earthing may be the best option. Personally, I earth the frames of my panels after seriesing the frames, close to where they are. Most panels usually have at least one hole or opening indicated with an earth symbol that can be earthed. NiyiOmoIyunade: microgiant: |
Re: Solar Energy, A Complement To FTA by microgiant: 9:21am On Apr 02, 2021 |
ojesymsym: NiyiOmoIyunade: You got your answer. |
Re: Solar Energy, A Complement To FTA by ojesymsym: 9:28am On Apr 02, 2021 |
Yes I saw that. I am not saying they are wrong but I am just not convinced. My thinking is that the earth is such a large reservoir that once a charge from either points of earthing enters it, it gets lost so the question of it conducting between the different rods seems to me very very unlikely. But then, who knows? microgiant: |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:43am On Apr 02, 2021 |
olopan: He already follows him here on Nairaland 1 Like |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:46am On Apr 02, 2021 |
WE BUY DEAD/SCRAP BATTERIES!!! We also buy off scrap/dead deep cycle batteries from any state to Lagos(T&C applies) . 12v 200a ..... N16,000 12v 150a.......N12,000 12v 100a.......N8,000 2v 500a ......N5,500 If outside Lagos state , send the scrap batteries to your nearby Lagos park & get your payment alert immediately after confirmatory remarks from me with the transport company manager / secretary or driver . Contact, Smartcell global services CALL:: 081-350-31951 WHATSAPP::: https:///2348170385620 1 Like
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Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 4:10pm On Apr 02, 2021 |
You are correct that the earth is an infinite sink but lightning is also an incredible amount of force. When you channel lightning through an earth rod some of it may easily radiate around the rod helped by moist soil (during rainfall e.t.c) and arc to another buried metal object - rod or whatever - any living thing in that path tends to get electrocuted. If you bond the rods together there can be no arcing or voltage difference between them - this is what is called an 'equipotential bond' This is not really a matter for conjecture or debate as there is documented evidence of people and animals getting electrocuted in this exact manner. Further the people that spec code do so after exhaustive research and testing and consultation with industry experts. ojesymsym: 4 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 6:02pm On Apr 02, 2021 |
This particular UniT costs between 65k and 90k depending on your source - the premium ones go over 200k easily and yet all you are trying to measure is resistance between rod and earth. Fluke have an excellent article explaining the difference between accuracy and precision for measurement instruments A good way to look at precision is the arrangement of holes/points of impact on a shooting-range target. Assume that your rifle is aimed at the bullseye and you shoot from the same position each time. If the holes are tightly packed but outside the bullseye, the rifle (or shooter) can be considered precise but not accurate. If the holes are tightly packed within the bullseye, the rifle is both accurate and precise. If the holes are spread randomly all over the target, then the rifle (or shooter) is neither accurate nor precise. In some circumstances, precision, or repeatability, is more important than accuracy. If measurements are repeatable, it’s possible to determine an error pattern and compensate for it. In my case I chose precision (repeatability) over accuracy because I have a reference measurement to validate against - the meter itself boasts a + or - 2% metric olopan: |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 6:48pm On Apr 02, 2021 |
olopan: Fwiw the number that contacted me to inform me that he has Deye is not Chris but ofcourse Chris may have as well |
Re: Solar Energy, A Complement To FTA by Saipro(m): 7:15pm On Apr 02, 2021 |
My 4kWp Canadian Solar array (255W Poly PV × 16) churned out an impressive 19kWh today despite their age. Had them cleaned today and didn't even max them out. Yingli and SolarWorld alone have rivalled this thus far in my experience. Thanks NiyiOmoIyunade for convincing me to get these panels (I didn't wanna get rid of my JoySolar panels; they were pricey at the time of purchase) and thanks Zeestone99 for the supply (3rd or 4th year now, I believe). Discovered later on that NiyiOmoIyunade also stocks authentic Canadian Solar panels. 2 Likes
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Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 9:28pm On Apr 02, 2021 |
Thank you for the honorable mention my Oga. Canadian Solar really fire - I remember recounting here how my Canadian Solar produced more cumulative energy in one year of use than my Flames had produced in 2 years and they were sitting side by side on thesame roof. Canadian solar have never dissappointed in any way in all my years using them. In the last few months I have been playing with Yingli as well due to a more affordable price point to customer. I can attest that they do very well too - daily harvest 4 times nameplate on a regular basis. Saipro: 1 Like |
Re: Solar Energy, A Complement To FTA by olopan(m): 10:09pm On Apr 02, 2021 |
Oh! Have no idea kiekie1: |
Re: Solar Energy, A Complement To FTA by olopan(m): 10:19pm On Apr 02, 2021 |
Nicely explained, thanks for the clarification. I will look into getting one soon We noticed many electrician have bad earthing with leakage in the wake of their works NiyiOmoIyunade: |
Re: Solar Energy, A Complement To FTA by olopan(m): 10:24pm On Apr 02, 2021 |
The last time we tried partnership with Yingli, the but charge didn't take us serious .... So we took our business to Flames as a budgetary panel but these days .... The name plates stats we observed are between 2.93 to 3.1 of name plate and it's quite not that fantastic to me. In our recent install the Canadian PERC cells beat flames Half-cut cells which were suppose to be more efficient over conventional PERC cells... NiyiOmoIyunade: |
Re: Solar Energy, A Complement To FTA by Oshomo12(m): 10:43pm On Apr 02, 2021 |
olopan: After like 4years of use, check flame production. You will be deadly shocked! Flames is a none existence brand(i want to believe it is/was a label in naija) |
Re: Solar Energy, A Complement To FTA by olopan(m): 10:56pm On Apr 02, 2021 |
A Nigerian brand - Yes I believe they partner with a company in China called RENEPV I hope that's not the case after four years plus it's a good thing we made our research in the field to know these things. Looks like it's time to shift ground Oshomo12: |
Re: Solar Energy, A Complement To FTA by Integratedpower: 11:29pm On Apr 02, 2021 |
Please can I join 250 watts*2 solar panel with 300watts * 2, if yes how can I connect them in series and parralell? Thanks |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 11:30pm On Apr 02, 2021 |
The standard Naija electrician package is some lumps of charcoal and industrial salt all mixed together around the rod - poor contact area between charcoal lumps and rod and salt leaks away after a bit of rainfall. Such an earth install will fail sooner than later. This is big trouble to a PV installer because soon enough equipment fails when the surges cannot safely go to ground and you will be held responsible. So we are forced to rework things for system longevity. What you are wanting is solid contact between rod and earth that will resist time so encase the rod in conductive material e.g GEM premix or fine charcoal powder and cement (Ufer like ground/concrete encase electrode) - these days I just go deep (couple two rods together) and sink more rods in more than one location, bond them all and be done with it. Yes you need an earth tester - only then would you be able to gauge the effectiveness of an earth install olopan: 2 Likes |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 11:42pm On Apr 02, 2021 |
Integratedpower: Yes if you don't mind a reduced performance especially from 300w. However It should only be in parallel.... i.e 2s2p. 300s in series, 250s in series then paralleled. |
Re: Solar Energy, A Complement To FTA by Tecktak: 5:17am On Apr 03, 2021 |
Really informative thanks sharing this valuable information with us i have shared this on my [url="https://tecktak.com"]blog[/url] |
Re: Solar Energy, A Complement To FTA by olopan(m): 8:22am On Apr 03, 2021 |
If you go ahead to do this. You will lose power 300W will work like 250W Hopefully the 250W is in good condition else total power may be little than expected. Better get a separate CC as each works independently. Happy Holidays everyone Integratedpower: 1 Like |
Re: Solar Energy, A Complement To FTA by mctfopt: 10:57am On Apr 03, 2021 |
Tecktak: With whose permission? 2 Likes |
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