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.

mank1234:


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.

I agree. Especially for ac voltage

mank1234:


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.

Very true.

mank1234:


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.

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

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

This is a bit confusing for me.

Electric wires have a resistance per foot; the smaller the wire, the greater the resistance. When an electric current flows through a wire with less resistance, the greater the current flow in proportion to the voltage, according to Ohm's law.

The larger diameter of the bigger wire should offer more area for electrons to move through the circuit easier than smaller wires, hence greater current.

In view of the above, is your increase in wire size to a larger 2.5mm², not supposed to result to an increase in current flow?
Rather, yours decreased by 2.8amps (i.e from 11amp to 8.2amp on normal draw).

Just my thoughts though.

We learn too much theory in this country rather than practicals.

aviona:

This is a bit confusing for me.

Electric wires have a resistance per foot; the smaller the wire, the greater the resistance. When an electric current flows through a wire with less resistance, the greater the current flow in proportion to the voltage, according to Ohm's law.

The larger diameter of the bigger wire should offer more area for electrons to move through the circuit easier than smaller wires, hence greater current.

In view of the above, is your increase in wire size to a larger 2.5mm², not supposed to result to an increase in current flow?
Rather, yours decreased by 2.8amps (i.e from 11amp to 8.2amp on normal draw).

Just my thoughts though.

Resistance limit the flow of current, this result to heating up the wire, which means more current draw. Bigger wire, lower resistance, lower current draw, cos the wire is not heating up. Not doing unnecessary work for nothing.

This is the simple way I can put it for now.

Note: R=(roh*length)/cross-sectional A

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

Thank you for taking your time to do this. Now we can talk the physics behind this issue.

For your 1.5hp(~1200w) pumps to pull that high(2100w) means your wires are not properly sized, cos the distance covered is quite high. Now imagine that you use a 5mm2 wire, what will the consumption drop to? Let me also add, pure copper wire faa!!

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.

mank1234:

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.

Let him give you the Hole depth, wire type, etc before you make conclusion. I am only showing what happens when cable is small with proof this length is not even up to 10meter.

adrusa:
I'm still looking for a way to talk to my 7.5KVA Felicity LF Inverter IVPS7548. Since I bought it, we never talked, we have just been looking and touching which is quiet unusual for my equipment. I need to be able to hear what it is saying without having to go to where it is hanged, I have found some indirect ways of monitoring it, but I still long to be able to communicate with it directly.

Any help is welcome.

Have you been able to sort this out?

mank1234:

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 not >55m. Least he should use to satisfy voltage drop of less than 5% is 4mm2. In my side pump depth rarely reach 10m depth.

Now you understand why his pump is taking that much power. 2.5mm2 is too small. My distance is not even near his, and I am using 4mm2 flex for my pump. Max power I saw is 650w from my 1hp sub pump.

Alright, it's much clearer now, thanks guys. Lol @ dam5reey.

WE BUY DEAD/SCRAP BATTERIES!!!

We also buy off scrap/dead deep cycle batteries from any state to Lagos (Terms & Condition applies) ...

12v 200a .... N30,000
12v 150a.....N22,000
12v 100a.......N14,000
2v 500a ......N6,000

Free pickup within some parts of Lagos mainland ! Shared cost logistics within Lagos Island environs . . 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 (shared logistics cost depending on scrap battery quantity) ..

Contact,
Smartcell global services
CALL:: 081-350-31951
WHATSAPP::: http://.us/w/?c=a46ea5

Omo, I really need to measure the actual power consumption of my 1hp water pump.
I've less concerned about it....... My cable size is 1.5mm and the distance is about 60m.

Good evening house, please I want to set up a frozen food shop for my wife. So I want to set up a 2kw solar system for her. She will be running only 2 inverter freezers 100w each for maybe 9am to 6pm. The set up will be done in the house and we will extend the wire to the shop in front of the house (Like 60yards distance).

Here are the things I planned for, hope I am on the right track?

1. 535w jinko panel (2)

2. 2ka inverter (don't know which to buy yet) please if you have any suggestions.

3. 60a mppt charge controller

4. 12v 160ah Lifepo4 battery

5. 60yards 10mm² cables

6. AC Spd 275v tomzn and Dc Spd 500v tomzn

Only the two freezers are going to be used. Please, am I on track with the above? If not please advise me anywhere you feel is not okay

isangjohnson:

Have you been able to sort this out?

Nope.

Valentinooo:
Good evening house, please I want to set up a frozen food shop for my wife. So I want to set up a 2kw solar system for her. She will be running only 2 inverter freezers 100w each for maybe 9am to 6pm. The set up will be done in the house and we will extend the wire to the shop in front of the house (Like 60yards distance).

Here are the things I planned for, hope I am on the right track?

1. 535w jinko panel (2)

2. 2ka inverter (don't know which to buy yet) please if you have any suggestions.

3. 60a mppt charge controller

4. 12v 160ah Lifepo4 battery

5. 60yards 10mm² cables

6. AC Spd 275v tomzn and Dc Spd 500v tomzn

Only the two freezers are going to be used. Please, am I on track with the above? If not please advise me anywhere you feel is not okay

I will suggest you add 2 more panels to ensure that both your freezers and the battery are adequately served during the day. The rest are okay as long as your wife doesn't become the centre for everyone to come and charge their phones and rechargeable lamps.

adrusa:


Nope.

Boss, we're still waiting for you. Please, try and fix it using Ojeysky's advise.

Jefferyzz:
I thought as much. It's very close to 2kw last I checked. How did you remove d wire connected to d submersible though.

We did not remove the wire that came with the machine, we only added wire new wire to it.

But we removed from surface to control box, and the distance consumed the 100 meter without any leftover.

Distance of surface to control box is 30 meter plus, so the electrician shared the wire into three and connected it as live, neutral and earth (that's if that's how it's called).

adrusa:


Can you post the picture of the new wire? Thanks.

Find below as requested.

That's 2.5mm comester wired used!

mank1234:


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.

My brother, distance is much.

From underground to surface is 180 feet plus.

From surface to tank is 30 feet plus.

From surface to control box is 90 feet plus.

Note: I used carpentry tape to take these measurements myself (from underground to surface, I had to measure the pipes one after the other, some are 15ft plus).

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

True!


This is the spec of our sub pump.

Pump Specs:
Name: ASTRAL submersible motor
Type: 4SD1100S
Horsepower = 1.5hp
Voltage = 220v
Current = 8.8a
45uf/450v
Power = 1.1kw
Frequency = 50hz
Cos 0.93


I wrote above spec before we installed it few months ago because the old one stopped working.

mank1234:

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.

To dig pump for Benin City no be joke oh.

You go dig tire because of the depth.

Some side for Auchi/Ekpoma can go as high as 500ft - 800ft plus to see water.

Dam5reey:


Let him give you the Hole depth, wire type, etc before you make conclusion. I am only showing what happens when cable is small with proof this length is not even up to 10meter.

The length is far above 10 meter, read my posts above!

Oshomo12:


Now you understand why his pump is taking that much power. 2.5mm2 is too small. My distance is not even near his, and I am using 4mm2 flex for my pump. Max power I saw is 650w from my 1hp sub pump.

This is a testament that Wire size and distance to pump determines what pump consume.

isangjohnson:
Omo, I really need to measure the actual power consumption of my 1hp water pump.
I've less concerned about it....... My cable size is 1.5mm and the distance is about 60m.

Buy clamp meter to measure it. I bought mine from Jumia when I urgently need to know the amps draw of the pump

Good day house

Please where can I get superceed 200ah battery for solar inverter

adrusa:


I will suggest you add 2 more panels to ensure that both your freezers and the battery are adequately served during the day. The rest are okay as long as your wife don't become the centre for everyone to come and charge their phones and rechargeable lamps.

Boss are you sure of this?

If he should add two more panels as suggested (making it 2140w), can his 60a CC produce more than 800w for his 12v system?

Valentinooo:
Good evening house, please I want to set up a frozen food shop for my wife. So I want to set up a 2kw solar system for her. She will be running only 2 inverter freezers 100w each for maybe 9am to 6pm. The set up will be done in the house and we will extend the wire to the shop in front of the house (Like 60yards distance).

Here are the things I planned for, hope I am on the right track?

1. 535w jinko panel (2)

2. 2ka inverter (don't know which to buy yet) please if you have any suggestions.

3. 60a mppt charge controller

4. 12v 160ah Lifepo4 battery

5. 60yards 10mm² cables

6. AC Spd 275v tomzn and Dc Spd 500v tomzn

Only the two freezers are going to be used. Please, am I on track with the above? If not please advise me anywhere you feel is not okay

It's likely you will be tempted to upgrade sooner than later, since you are still in the design phase, I will advice you go for 24v 2.5kva Felicity/Crown Ricco Transformer inverter, with 475w Jinko Panel * (4)

TechGeek777:


Find below as requested.

That's 2.5mm comester wired used!

The Comster is a single starnd wire it is not good for long distances,also all Joint or connection points are position of losses rather look for strand wires long ones without joining, strands cables distribute electrons more they are expensive but worth the Money

Good morning bosses.

Pls who knows of any jinko or jingli solar panel dealers/sellers in Kano state?

Any recommendations?