GloriousGbola:


you do not need an indelec lightnng arrestor for a domestic residence

a franklin arrester is all you need

you only need one arrestor

anything else is overkill

what you need is an arrestor at the highest point in your facility

it must be properly earthed

Area covered is dependent on:
-Type of lightening arrestor
-likelihood is it occurring.
-shape of your roof
-the length and breadth of building and so on.
So you may actually need more than 1.

You also need a very good earthing. Like Niyi pointed out the resistance must be very low so that the current can flow easily to ground when surge is building up. Else you're are causing more harm - attracting what you cannot handle

FEGEITOK:


Thanks.

Additional clarifications.

There is an earth rod outside the building.

It is less than 5 inches from the building.

The solar panels are 170 inches from the building.

I connected the solar panels that distance of 170 inches to the general earth of the house.

You mean that I should do another earth rod less than 5 inches from the solar panels then connect both underground right?

The last paragraph is what I meant.
If the connection in the bolded is outside your building, I think it should be ok. Surge will flow to ground rather than I to your house.

FEGEITOK:
For those of us that have earthed their solar panels.

When do I need to create a separate earth terminal for the panels instead of that of the main house?

Currently the panel earthing is connected to the house earth.

Do it separate. You don't want flow path to ground through your home.

Inside the ground, link the panel earth rod to the earth rod serving the house.

Guiding principle: surge follows shortage/fastest (least resistant) path to ground.

incogni2o:


Just the Panels , How much?

I'm not the owner or marketer.

olopan:
Sorry, I don't understand you please.

It means it's cheap compared to current market price.

olopan:
This installation is for sale.

Reason: Relocation.
The owner is here on the forum and also open to slight negotiations installed last year and nearly up to a year usage

Going price is 5.4million

It has 15 units of 400W Jinko panels
5KW Deye hybrid Inverter
13.4 /~14Kwh of Battery storage from Valto(Valtech)
Installation accessories... All provided for.

Please kindly quote or check my Bio for contact

Give away price

Sometimes stats can paint a very poor picture.
When I checked the stats after first half, I thought engln outplayed us: Stat showed that England had 60% possession, more shot on target. I just finished watching first half now an I can tell that we were the better side.
The shot that hit bar is counted as off target.
We were just unlucky.

Dam5reey:


Wire plays a major role in consumption as there is a voltage drop and more current is required, imagine a voltage from 220 to 160V at the end of the pump!

If there pump requires 8AMP to run at 220V, but its seeing only 160V it will draw 11A. So 11A will be required from Source increasing the consumption from 8A to 11A which is 1760w to 2420w

See attached. Voltage dropped from 196V to 166V

A voltage drop of 220v to 160v in a wire length is close to 30% voltage drop. Who designs such a system? Even a 1.5mm2 cable won't give that except the distance is far - that's not to say you should use 1.5mm2 for your pump.

There are several online tools to estimate voltage drop at specific distance and load current with different sizes of wire. Checkout one here https://www.calculator.net/voltage-drop-calculator.html?necmaterial=copper&necwiresize=0&necconduit=pvc&necpf=0.85&material=copper&wiresize=0.4066&resistance=1.2&resistanceunit=okm&voltage=220&phase=ac&noofconductor=1&distance=20&distanceunit=meters&amperes=11&x=83&y=22&ctype=nec

Edit: I just went back to check distance to his pump. It's >55m. Least he should use to satisfy voltage drop of less than 5% is 4mm2. In my side pump depth rarely reach 10m depth.

TechGeek777:


Finally did the test today with "CLAMP METER DT3266F"
Surge: 16.64amp * 230v = 3,827.2w
Continues draw: 8.2amp * 230 = 1,886w

The reduction in consumption is as a result of stronger/better wire used (2.5mm² Comester)

Below is the initial test done in Q1 of this year.
Max Surge = 19amp * 230v = 4,370w
Continues draw = 11amp * 230v = 2,530w

The difference is too much to be attributable to change in wire size except the distance is extremely long. Other factors may be responsible:
1) different voltage. Some appliances consume more power as voltage increases while some consume same so long as it is within its operated level.
2) water level in the well. If the water table has risen as it is in rainy season slightly less power is required to lift it to same height than when water table has lowered.

Wire alone can't consume close to 700W.

Samueltemi337:
Osimhen will join either Bayern Munich or PSG
You can mark this too
And we will see who is right

He's not moving.

komekn:


He is not doing anything wrong he had been consistently poor for the past 7 years in Europe. That is why he remained in Segundo division for three seasons.

Your gospel don sink in.
Iheanachio is toying same line.
Dem bear same firstname

U20 update:
Israel carried the day (3rd place match).
Israel 3: South Korea 1
The first four teams at the tournament all finished as second in their respective groups.
Up next is Italy vs Uruguay.

:

Thastie:
One thing I wasn’t certain of about BAT is if he can treat people’s fvck up; like terminating their contract, evicting and jailing. I’m happy with this news

This is how tyrants are created. The question should be is it constitutional for a president to suspend a sitting CBN governor? Jonathan first set this wrong precedent.

When Buhari started nepotism that's how he was urged on with the excuse, 'you cannot sacrifice competence on the alter of federal character'. Then he started moving in on judiciary and legislature.

It seems we are on this path again.

Icon4s:
Throw back Thursday.
It was the miracle of Dammam!
What a memorable day for Nigerian football
Highlights and Penalties


https://www.youtube.com/watch?v=_EqqElKXURI

I didn't start school when this match was plated but a football crazy neighbour made me love football then. The celebration was insane. Christopher Ohenhen was the only player I knew then and I adopted his name as my street football name.

4llerbuntu:
RS485.

those ports are usually RS485, not RJ45.

Most inverter boards do not include network cards......

Rj45 or Rj11is the plug. RS485, CAN, RS232, Modbus, are communication standards which can equally utilize any of the plugs.

Vicobaba123:
This is for Mppt solar communication, RS232 to usb. Thanks

USD to RS232 (Rj45) is not standardized. You have to know the pinout for the Rj45 end so you can request for exactly that. Else you may get one and it doesn't work with your controller.
Does your manual has the pinout?
What's the brand and model of your controller?

Vicobaba123:
Hi everyone,
Where can I buy this cable in Lagos ?

There are so many cable like that but for different purposes. What is it for? What's the standard?
It can be USB - RS485, USB to CAN, USB - modbus, and so on. Each has different pin out at the Rj45 end. And the chip in the USB end is tailored to the specific purpose.

You can get this aliexpress store to create it for you with a genuine FTDI chip:
https://a.aliexpress.com/_EQ5wxVP
You have to give them the full details and negotiate the price

dollarnaira:


Your last statement is an opinion that I differ.
The above should not even occur in the first place since we all are aware of our appliances' wattages. Well, the type of inverter we all use differ.

You may be right.
Short circuit and overload you can control but you can't control over voltage and surge.
SPD degrades on each hit. So inbuilt suppression will degrade for sure after a while if you don't have external.
When lightening happen in my area I don't run around disconnecting appliances.

Most inverter advice leaving 50cm space around it for heat dissipation - that's ventilation. If your inverter has to go off due to overheat, components inside degrades gradually and would fail eventually if this happens frequently.

Rejection of voltages above 285V by your inverter is done by a circuitry.
The circuit may fail when nepa decides to give you line to line voltage of 385V in error. It's better for your overvoltage protector to die than your inverter in such scenerio. This happened not too long in my area, so many appliances were destroyed in adjourning houses.

Minute details like this account for why some people's inverter/appliances last longer than that of others.

I'm on my 2nd inverter in over 14 yrs - not because of failure (but upgrade)

dollarnaira:
Does an inverter with the following protection need extra protection?

1. Short circuit
2. High temperature
3. Low/high voltage
4. Overload
5. Storm surge

Yes. Same way u lock your bedroom bedroom in addition to having main entrance.
1) MCB - incoming and outgoing
2) ventilation.
3) over voltage/under voltage protector.
4) same as 1 above
5) SPD with proper earthing.

Inverter doing any of the above should be last resort as each time it does this for you, it degrades and will eventually fail.

Zonefree:
From base to peak, Mountain Everest is not the tallest mountain on earth.

Mauna Kea is over 6,000 farther from Earth's center than Mount Everest.

Explain further. I think Mauna Kea is just half of Mount Everest above sea level.

This is bullshit.

Does this mean schools will open for 3 days a week as well?
Why are people celebrating this nonsense move?

Creating more off-duty for people who are already unproductive.

Each time Brazil scores, Israel scores less than 5min after.

dacool1:
Which would you oversize, battery bank or PV array?

Please share your reason.

Theoretically, both - to cover 3 days of no sun.
Pragmatically, your battery should be enough to sustain your night time use (2 night use - oversized) . Your solar panel should be able to generate enough to cover your day use and also be able to refill the battery.

Itrybe:
The Coalition of Northern Groups (CNG) has kicked against what it described as the deceptive move of the Nigeria Labour Congress (NLC) over the removal of fuel subsidy by the federal government.

The spokesperson of the group, Abdul-Azeez Suleiman, in a statement issued Thursday, said it observed that on every occasion, the NLC would deceive the public into believing they are protecting their interests, only to betray the course and negotiate with the government at the expense of the suffering masses.

It said the first instance was the NLC protests over the harsh economic policies of former President Muhammadu Buhari’s government in February 2017 which came to an abrupt end without achieving any results and no convincing explanation to the public.

It said, “Then came the September 2018 strike, which was also terminated after the NLC met with government officials and compromised the effort with no effect.

“The worst scenario was the October 2020 organised labour plan to shut down the entire economy in protest over the increase in the pump price of petrol and a hike in electricity tariff.”

The group noted the strike was called off at the last minute after a meeting between government officials and labour leaders in Abuja.

The group stressed that it took exception to the move by labour at that time, describing it as a huge trade-off and compromise in its strongly worded letter of October 6, 2021, to the former President of NLC, Ayuba Wabba, expressing disappointment in the labour leadership, for deliberately suspending an action meant to check the arbitrary hike in fuel prices by the Buhari administration.

“Now that NLC wants to take the nation for granted once more, we demand that it should first of all explain its whereabouts at the time the budget was prepared, presented, defended by the government of the former president Muhammadu Buhari and passed by the 9th National Assembly without the provision for subsidy,” it said.

According to Abdul Azeez,”We call on the new administration of President Bola Tinubu to handle this obviously dicey situation with utmost wisdom and compassion so that the innocent public is not made victim.

“We call the attention of the Tinubu administration to be vigilant over the latent trap set for it with the subsidy issue by the outgone government aiming to set it on a collision course with the public early in the day.

“We therefore advise government to deploy maximum wisdom, and caution to chart a workable means of dealing with the bad situation deliberately thrown on its laps in such a way that no one gets

Nice.
Subsidy na scam.
TAM of refinery na scsm
Bicameral legislature na unnecessary cost
Minister of state na political patronage
Constituency ptoject scam promax
Security vote scam promax

Can we ever have a govt with will power to tackle all this in addition to punishing corrupt officials?

senatordave1:



Oga,you must list out everything before the court.you might not tell them how you want to prove it but you must tell them what you are bringing and your complaints...

I just heard that nuhu ribadu is national security adviser.cc Fergie001,kyase

Ok.
E don red for boko haram, ipob and militants.

senatordave1:


Oga,you must always inform everyone beforehand in court what you want to do

They did. They told them they are challenging results in 11 states. Is local Govt result not what constitutr state result?
You don't tell respondents how u want to prove your case but that you want to proof your case.
You don't tell them your exhibit you present it and the court decides if it's admissible.
Lawyers, am I wrong?

shepherd316:
Let's pray for longlife for President Tinubu, and let's also pray for the peace of Nigeria

We pray for long life for all Nigerians and peace for Nigeria. In addition, we pray for justice. A society without justice is like animal kingdom where wild animals always have their way.

blaise26abj:
Freight cost to and from nigeria , landing cost . Foreign refining expenses as well as taxes in the countries with the refineries . How will it not reduce?

However , I always said Dangote is no fool . He borrowed money to build the refinery . He would rather sell at the current price or higher to quickly meet his financial obligation . In fact if it is 1000 per litre the better for him . Why do you think that subsidy removal coincides with the start of his refinery ? Make we dey play dey go .

It's supposed to reduce as you said. It's either they want to scam us so we can continue with subsidy so they can continue smiling to bank with inflated importation or they are holding brief for Dangote so he can peg the price very high when the refinery starts delivering.

That Tunisian goal VAR canceled looked like ojoro. Was that really handball?

komekn:


It seems you have forgotten the proposition that you birthed that prompted my response.

I will quote you verbatim ;


Morale? I dey vex. I like Nwakali. He plays well. Luck is not just on his side. They are players in better clubs that he is better than

I asked you to name just three players and of African origin that he Nwakali is better than.

Look At what you Have Presented ❓❓❓

Lolz.

I presented 2 points in that message:

1) that he's is better than some players in some clubs
2) that some players can be unlucky.
I went on to mention an example that was prolific but unlucky.
So naturally when you said 'mention 3 not just 1', anyone can think you're referring to point 2. Next time be explicit.

To your question, if I say he's better than Mahrez and Osimehn what will you do? Take him to man city or Napoli and prove otherwise. Football is a team sport. Your teammate can make you so poor.

Edit: I forgot you asked for 3: lt me add Awoniyi.

tuoyoojo:
The mood in abuja is pensive

People walking about with long faces

Abuja voted for Peter Obi

But some few Nigerians wants to continue with the status quo and did their magic

Now that tilibu have removed subsidy

Hope all Apc supporters enjoy buying fuel for 197 naira

In my town we buy at 220 to 240 on a normal day. Not much difference, if it will available, and at uniform price across Nigeria.