NewStats: 3,261,968 , 8,175,681 topics. Date: Saturday, 31 May 2025 at 09:52 AM n23s

GloriousGbola:


Two things can happen if your earthing has issues. Lightning can go back into your installation. This is why I prefer to isolate lightning protection from my main earthing. Not practical abroad but in Nigeria you put lightning protection on your over head tank which is usually detached. Also protects from surges induced by lightning current

However with solar s this may become moot as the s are on your roof.

In this project we had high voltages (up to 40v) on the neutral which meant high voltages all around, which would damage the equipment. During troubleshooting we found the earthing resistance was over 20 ohms. We first relocated the rod, drove it deeper, did charcoal and salt, no difference. We bonded two earth rods 5m away from each other, no difference. So we had to grit our teeth and do a four rod solution. After we did this the voltage on neutral issue was resolved.

10hms is OK for domestic installations, but for industrial - transformer, telecoms, it infrastructure, ev and pv installation - 5 ohms is strongly recommended. These are usually the first caveats the technical partners will invoke if there is equipment failure

I also work in an industry where earthing is very important. That fire at nnpc some weeks ago may have been due to improper earth bonding or ineffective earthing during truck discharge. It is easy to take it for granted and many people unfortunately do.

Agreed the 40V observed on neutral is high but that may not entirely be due to poor earthing.

In a three phase system, the neutral conductor which is earthed at the transformer is supposed to be at 0V when the phase are perfectly balanced. The neutral conductor from a perfectly balanced transformer carries no current. Unfortunately in the real world, it's practically not feasible to achieve that. So long as there's an imbalance between the phase you're bound to have a voltage of some figure on the neutral line. I have a mestek meter, permenatly on my socket that shows voltages between L N and E. Sometimes it reads high as 25V, at other times less than 5V for NE voltage. Also, because of the current in the neutral line, the further you're from the neutral-earth bond, the more it's voltage at your point would be.

FEGEITOK:


The grid connection was an oversight.

I intended to disconnect.

This isn't my first time traveling and leaving the stuff connected.

I don't know if it makes a difference but my house is next to an AEDc transformer.

And I know they do proper earthing for those things.

One of the transformer earth rods in my compound.

I'll seek advice if I can link my own earthing to that one.

Appliances can go crazy at anytime. I'ld strongly advise never to leave energized equipment running unattended to for long periods. wether connected to earth or heaven.

✌️

gadgetplanetng:
What does this mean on an Axpert inverter?
It's been this way all day today

The solar charging line isn't showing

Check the input wiring pv side going into the inverter it might be loose.

Also check if there is any voltage across the pv wires with a voltmeter manually. If you're not getting a good reading, then your problem is on roof.

gadgetplanetng:
What does this mean on an Axpert inverter?
It's been this way all day today

The solar charging line isn't showing

Update on this,
It went of normally at night though I forgot to turn off the battery breaker.
It's on this morning now and charging,
I'd keep observing though

Thank you @Drgreatone @Dam5reey @samnaija

Please professional help me I just install 2.4kw pure sinewave mercury hybrid inverter using it with dstv xtraview decoder, the primary decoder working perfectly but the secondary decoder didn't work and loss connection with the primary decoder heart beat. But using it with grid or generator works perfectly for both decoder but when switch to inverter it loss connection, please help me

FRESHTWANYE:
Please professional help me I just install 2.4kw pure sinewave mercury hybrid inverter using it with dstv xtraview decoder, the primary decoder working perfectly but the secondary decoder didn't work and loss connection with the primary decoder heart beat. But using it with grid or generator works perfectly for both decoder but when switch to inverter it loss connection, please help me

this is strange

Namzy:


A battery can be 70% charged and charge controller will enter float especially those charge controllers that don't have automatic absorption time. So you can deplete your battery and the next day your default 2 hours absorption time won't even take the battery 70% before the charge controller enters float because the 2 hours of absorption has reached you should get a battery monitor with lead acid battery. Another crude method is when the charge controller is in float, switch off the inverter and check how many watts the charge controller uses to maintain the float voltage if it's above say 200w or more then you have a long way to go

I really love this boss,but I'm a newbie and have some struggles with the last part of your writeup.
The cc using 200w and above to maintain the float voltage actually means what?

Trippledots:


Appliances can go crazy at anytime. I'ld strongly advise never to leave energized equipment running unattended to for long periods. wether connected to earth or heaven.

✌️

LOLZ...so cell stations running in remote locations 247 with inverters and automatic kick over gens......is wrong?
adequate protection is key, i hv been out of town for weeks and left my freezer and inverter with solar and grid powered on..zero issues

icjunior:


I really love this boss,but I'm a newbie and have some struggles with the last part of your writeup.
The cc using 200w and above to maintain the float voltage actually means what?

Actually means your batteries are significantly less than 100%. For me I'll initiate bulk charging again to get the batteries close to possible 100%. When my batteries are full, I'll usually see about 50 watts at float voltage of 27.6v from my battery monitor. So your charge controller when no load is connected should also be showing such watts at your float voltage level (I use 27.6v for tubular batteries). This is a crude method, but it's better than nothing.

Namzy:


Actually means your batteries are significantly less than 100%. For me I'll initiate bulk charging again to get the batteries close to possible 100%. When my batteries are full, I'll usually see about 50 watts at float voltage of 27.6v from my battery monitor. So your charge controller when no load is connected should also be showing such watts at your float voltage level (I use 27.6v for tubular batteries). This is a crude method, but it's better than nothing.

Thanks!

Who gets 100a 8s smart Jbd should let me know urgently.

Do you need rugged and efficient UPS, i recommend Vertiv UPS . It is available in different Sizes. We have offices in Lagos and Abuja & we do Nationwide delivery. You can reach us on 08066332919

Hello to the great people of Nairaland!
This thunder issue is already messing with my mental state and it’s kind of making me wonder if God is punishing me somehow
Just earlier this year my hybrid inverter got fried and then I decided to get a satchet inverter from one of the seller on here and the inverter been working perfectly fine carrying my two freezers and normal lighting points and charging of my devices.
Went to school yesterday to write an exam and then it started raining, sure can’t run out of examination hall to come home to turn off my system so along the way the thunder strike again and on getting home I realize the inverter isn’t supplying anymore.
Once again I’m without power supply and I have to go to charging stations to have my phone charged.
Please somebody save my dying soul because I’m sad
Could it be because the house I live in is a storey building?
Even my guy without thunder arrestor isn’t affected, why always me?
I already bought all the materials for thunder arrestor installation.
I’m afraid more than ever do buy a normal inverter again because it’s never easy losing money!

isangjohnson:
Who gets 100a 8s smart Jbd should let me know urgently.

4S-8S JK 1A active balancer Bluetooth bms available
6S-21S JBD 120A Bluetooth bms available

RickyM:
Hello to the great people of Nairaland!
This thunder issue is already messing with my mental state and it’s kind of making me wonder if God is punishing me somehow
Just earlier this year my hybrid inverter got fried and then I decided to get a satchet inverter from one of the seller on here and the inverter been working perfectly fine carrying my two freezers and normal lighting points and charging of my devices.
Went to school yesterday to write an exam and then it started raining, sure can’t run out of examination hall to come home to turn off my system so along the way the thunder strike again and on getting home I realize the inverter isn’t supplying anymore.
Once again I’m without power supply and I have to go to charging stations to have my phone charged.
Please somebody save my dying soul because I’m sad
Could it be because the house I live in is a storey building?
Even my guy without thunder arrestor isn’t affected, why always me?
I already bought all the materials for thunder arrestor installation.
I’m afraid more than ever do buy a normal inverter again because it’s never easy losing money!

Is ur building the highest in its vicinity? What protective devices do you have for ur system? Is ur building earthed too?

Drgreatone:

Is ur building the highest in its vicinity? What protective devices do you have for ur system? Is ur building earthed too?

Yes,It’s the highest in its vicinity.
Non at the moment, the first system that was installed for me was only with circuit breaker and that’s all.
By earthed do you mean thunder arrestor? If so, NO.
If you’re referring to the normal house earthing, people I met here claimed it’s bad already.

RickyM:


Yes,It’s the highest in its vicinity.
Non at the moment, the first system that was installed for me was only with circuit breaker and that’s all.
By earthed do you mean thunder arrestor? If so, NO.
If you’re referring to the normal house earthing, people I met here claimed it’s bad already.

Start with the basics. Get ur apartment or the inverter earthed. Get breakers and SPDs for both AC and DC side of ur Inverter/charge controller. This are more important and cheaper than getting a thunder arrestor.

FRESHTWANYE:
Please professional help me I just install 2.4kw pure sinewave mercury hybrid inverter using it with dstv xtraview decoder, the primary decoder working perfectly but the secondary decoder didn't work and loss connection with the primary decoder heart beat. But using it with grid or generator works perfectly for both decoder but when switch to inverter it loss connection, please help me

Post picture of the Inverter

My s are not on the roof because of this.
Lightning seeks the highest conductor

RickyM:
Hello to the great people of Nairaland!
This thunder issue is already messing with my mental state and it’s kind of making me wonder if God is punishing me somehow
Just earlier this year my hybrid inverter got fried and then I decided to get a satchet inverter from one of the seller on here and the inverter been working perfectly fine carrying my two freezers and normal lighting points and charging of my devices.
Went to school yesterday to write an exam and then it started raining, sure can’t run out of examination hall to come home to turn off my system so along the way the thunder strike again and on getting home I realize the inverter isn’t supplying anymore.
Once again I’m without power supply and I have to go to charging stations to have my phone charged.
Please somebody save my dying soul because I’m sad
Could it be because the house I live in is a storey building?
Even my guy without thunder arrestor isn’t affected, why always me?
I already bought all the materials for thunder arrestor installation.
I’m afraid more than ever do buy a normal inverter again because it’s never easy losing money!

Valto:
4S-8S JK 1A active balancer Bluetooth bms available
6S-21S JBD 120A Bluetooth bms available

How much?

Hello everyone. I have this SRNE HYP4850S100-H inverter for sale at 750k

It comes with 18 months warranty. Location is Port Harcourt, but I can waybill to anywhere.

WhatsApp/Call:
Specsheet attached.

gadgetplanetng:
My s are not on the roof because of this.
Lightning seeks the highest conductor

if u escape thunder from s... it will come through the grid bro... brace up 4 protection

RickyM:


Yes,It’s the highest in its vicinity.
Non at the moment, the first system that was installed for me was only with circuit breaker and that’s all.
By earthed do you mean thunder arrestor? If so, NO.
If you’re referring to the normal house earthing, people I met here claimed it’s bad already.

Get a double pole breaker between inverter and battery, also break your input, output and pv. Turn off your breakers when you are not home or it's raining.
If the building is not your house and you have no long term commitment to the house, you won't want to install proper earthing equipments.

Sorry for this terrible experience bro.

You need to tweak up your installation if you must continue to use Solar and Inverter while living in that building.

1. You need a rain sensor switch. Most rain-sensing devices work by accumulating a set amount of rainfall before a switch is activated that interrupts the circuit from the controller and shuts off the system.

2. You need a or style of ATS that disconnects your Grid Input once Grid is Off which is most likely to happen once it starts to rain. Also in the same box, you will integrate a PV Rapid Shutdown or that will be connected to the Rain Sensor. Once the sensor gives the command, these ors will shut off all inputs to your Inverter.

3. You need to drive a 6ft or 8ft earth rod into the ground and use it as your earth if the building does not belong to you.

4. You need the appropriate SPDs, AC & DC RCBO MCBs for your PV, Inverter and Home loads. By appropriate I mean the amperage ratings must be appropriate to you devices. Eg. Don't go putting a 63A MCB between grid and your Inverter when your Inverter Input Current is rated 25A Max.

5. You need an experienced electrical personnel to do this connections. No need to go this route if you will not use a qualified technician to install them.

Though this might sound expensive, It's better than replacing or repairing your Inverter every rainy season. It's a must in Renewable Energy if you must use it.

RickyM:
Hello to the great people of Nairaland!
This thunder issue is already messing with my mental state and it’s kind of making me wonder if God is punishing me somehow
Just earlier this year my hybrid inverter got fried and then I decided to get a satchet inverter from one of the seller on here and the inverter been working perfectly fine carrying my two freezers and normal lighting points and charging of my devices.
Went to school yesterday to write an exam and then it started raining, sure can’t run out of examination hall to come home to turn off my system so along the way the thunder strike again and on getting home I realize the inverter isn’t supplying anymore.
Once again I’m without power supply and I have to go to charging stations to have my phone charged.
Please somebody save my dying soul because I’m sad
Could it be because the house I live in is a storey building?
Even my guy without thunder arrestor isn’t affected, why always me?
I already bought all the materials for thunder arrestor installation.
I’m afraid more than ever do buy a normal inverter again because it’s never easy losing money!

brightk:
if u escape thunder from s... it will come through the grid bro... brace up 4 protection

Lol my installation is not connected to grid
I charge via solar only so it has a knife switch if I need to use it

I am trying to buy Jinko solar s, Foauni does not seem to have in stock. Someone recommended stellarmart. ng, anyone knows if they are a reliable source of original JK s? They say they have the 555W

ojesymsym:
I am trying to buy Jinko solar s, Foauni does not seem to have in stock. Someone recommended stellarmart. ng, anyone knows if they are a reliable source of original JK s? They say they have the 555W

Try Gennex technologies dot com.

Thanks. Gennex is home to Canadian Solar and their Canadian Solar seems to be cheaper than the 580W JK they have but just that JK has been shown to sometimes be able to do close to or even 100%, no one has vouched for Canadian to that extent yet.

Sapiosexuality:
Try Gennex technologies dot com.

ojesymsym:
Thanks. Gennex is home to Canadian Solar and there Canadian Solar seems to be cheaper than the 580W JK they have but just that JK has been shown to sometimes be able to do close to or even 100%, no one has vouched for Canadian to that extent yet.

They also have Jinko solar.

ojesymsym:
I am trying to buy Jinko solar s, Foauni does not seem to have in stock. Someone recommended stellarmart. ng, anyone knows if they are a reliable source of original JK s? They say they have the 555W

Energy Mall dot ng has too.

Sapiosexuality:
Try Gennex technologies dot com.

Gennex has high waybill/delivery methods/charges...
Techland is fairly reliable and use pocket friendly options for out of state delivery...

Energymall, is what we need to hear reviews on...
Till we get that, techland is my recommendation