₦airaland Forum

DUKEOFIBADAN:
Please my bosses in the house, I don't want to make a financial mistake so I bring this to you. I needed a generator that can power my 2hp inverter AC and fridge and someone suggested a 6.5kva kemege although I have kemege of 4kv which still work fine but I don't use it for AC only my fridge and other appliances. I'm skeptical about this kemege 6.5kva inverter generator

Indigbo:
Good morning,

Please which affordable Soundproof diesel generator is the best for a 3 bedroom flat, i have 3 non inverter AC, 1 American fridge-freezer, 1 ox fan which i'm willing to change to solar rechargeable, i also have 1 65 inch tv. Please which affordable soundproof generator is the best? Thanks.

Indigbo:
Any idea please?

ThisisIkemefuna:
Will drop pictures tomorrow when I get home

Gptech:
The size of generator you need does not depend on the size of your house, it depends on the load to be powered. It's better you state the power of those your non inverter ACs. Even if you finally get a gen to power them, it's advisable to turn them on one at a time, maybe you give an interval of like 3 minutes in between.

aieromon:
2 HP ACs ~ 9000w
Ox fans ~ 900w
Deep freezer ~ 200w

Total is 10,100w. You need at least 15kVA.

Indigbo:
Please boss can you help me with the KVA i will need for the bellow:

One Standing AC (2HP)
Two window AC (2HP & 1.5HP))
One Standing Samsung American fridgefreezer
One Oxfan 20inch
One bluetooth speaker
Home appliances (lights, TV 65 inch, phone chargers, etc.)

Also do i really need diesel or Petrol generator and how many kva will be perfect for this?

Someone just recommended 9kva Sumec Firman ECO12990ES? What do you think?

aieromon:
If you intend to run all ACs at once, the starting watts is 8100W.

You need a generator that can handle 9000W and above.

The ECO12990ES is rated 8200W.

Indigbo:
Not t all, even before now i;ve never run all at once. When the standing AC is switched on the other ACs will be off including ox fan too

Jossyroyal1:
Good evening everyone
I have a Sumec 12,990es generator. For the past two years I've been changing the oil as at when due, but recently I've discovered that noise has increased far more than it was when we first bought it. What could be the reason.

Also, aside changing of oil, is there more to servicing of gen? Do I have to call a generator technician to service it and what will they do differently...

Meklex:
My firman 2900 turns off whenever I turn on my microwave which is 700w.

I normally use it with the gen but it's been like 8 months since I turned on the gen. What could be the reason for this?

aieromon:
Do you turn on the microwave without load? How many years is this engine?

Meklex:
yes, only the microwave is on.

The gen was bought in 2020 but hardly used

aladeokin1000:
Hello house. Please can I get suggestions for a generator that can power a 65 inch TV, Pressing Iron, 250ltrs freezer, 6 bulbs, 1,200 watts home theater, ps4. Is 3.5Kva a good bet?

ACTW19:
I need guidance from experienced members in the house.

My church plans to purchase a new generator. We are considering a 9–10 kVA petrol generator because the previous one was 7.5 kVA.

Please advise us on a trusted and durable brand to buy.

I am not familiar with generator mechanisms and specifications. I only understand kVA ratings. What other specifications should I consider before making a purchase?
Our maximum budget is 900,000.
Thank you for your guidance.

aieromon:
What oil do you use?

Serendipity2023:
is this a good oil for my SUMEC SPG4000 generator

it's brand new bought last week.

aieromon:
Yes, SAE 40 is fine.

Serendipity2023:
What about the brand itself?

femarse:
Pls can I use the DC port of the generator to charge car battery ? Is there anything I need to do special before doing it ? I am just connecting wire to both plus and minus of the gen and the DC outlet , is that right ?

inze:
You technically can, but it’s not recommended and often not very effective or safe.

Those small 12 V DC ports on portable generators are usually meant for light, occasional charging (like small batteries or basic “boost” charging), not for properly charging a car battery. They are:

- Often poorly regulated: voltage and current can fluctuate and may overcharge or undercharge the battery, shortening its life or even damaging it.

- Too weak/slow: many are limited to a few amps, so charging a car battery from low state can take a very long time and still not reach full charge.

- Lacking proper charging stages: a healthy charge needs bulk, absorption, and float stages, which these DC outlets don’t manage.

The safer and better way is:

1. Run the generator.

2. Plug a proper 12 V smart battery charger (or car battery charger) into the generator’s 230/240 V AC socket.

3. Connect that charger to the car battery (red to +, black to –) and let the charger manage voltage and current.

If you still insist on using the DC port directly, at minimum you should:

- Confirm the generator’s DC output voltage and current rating in its manual.

- Make sure the battery is 12 V lead‑acid and not completely dead.

- Use proper cables/clamps, connect + to + and – to –, and monitor for overheating or boiling.

- Don’t leave it unattended for long periods.

But for your car battery and your generator, the correct advice is: use the generator’s AC output with a dedicated battery charger, not bare wires from the DC port.