Learn how to circuit UPS or Power Inverter with household appliances like fans, tube lights, energy savers, computers etc. Connect your office equipment like servers, desktop computers and surveillance cameras to make sure that they are up and running in case of power failure or black out. Any kind of large and small devices and electrical equipment can be wired with UPS or power inverter as long as their combined load is within the capacity limit. So take precautions and connect devices that won’t overload the power backup system when power fails.
Method No. 1:
Without connecting “output neutral” of UPS or Power Inverter with appliances and directly providing common neutral of home, apartment or building.
UPS / Power Inverter Wiring Diagram 1
– If the above circuit does not work, take a piece of wire and connect “output neutral” of power inverter or UPS with neutral wiring of home. The circuit will be closed and appliances will start working. Now, if you do this, never ever, I repeat never ever reverse the polarity of input or output or you will not only cause the short circuit but also damage the UPS or Power Inverter. So, be careful.
UPS / Power Inverter Wiring Diagram 2
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Troubles with single line / phase wiring & Solution:
Sometimes, you need to disconnect UPS from the circuit. In that case, label the plugs for live and neutral wires and carefully connect them back. In this kind of wiring, make sure that input and output of UPS are aligned. Otherwise, the circuit will not be complete and UPS will not work. See the diagrams below for more understanding:
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Method No. 2:
Circuiting UPS or Power Inverter with appliances by supplying both neutral and live wires coming directly from its output.
UPS / Power Inverter Wiring Diagram 3
– This is the simplest and straight forward method for connecting appliances with power inverters or UPS’. This type of wiring is especially required for those UPS’ which can not work with only phase wiring because such UPS’ are designed to disconnect both live and neutral circuits of input inside them when output is switched to batteries backup. If you want to connect sensitive electronic devices like servers, computers, TVs, sound systems, media players etc, you should prefer this type of wiring, or simply plug in using an Extension Cord.
Note: Red colour indicates the phase/live/hot/electricity providing wire and black color indicates the neutral/cold wire. Red arrows are representing phase terminals of UPS and black arrows are representing neutral terminals.
Safety: Methods described here are for reference purpose only. Make sure you get your UPS or Power Inverter circuited by a trained personnel.
Tri Handoyo
Sir
I purchase ups 3 phase input and output 110 Volt Line to Line ( no neutral). when I connect to Solenoid valve 110 V and it didn’t work, solenoid can not open, can you explain why?
Francis
Hi, I have the following problem
When the inverter is connected to the mains the output of the inverter neutral line shows voltage 225v and the phase side shows almost zero volts. However when the inverter is on battery mode the inverter phase side becomes phase and neutral as neutral respectively.
Problem is … Due to this reversing the following breaker trips… Need advice.
Main mccb
RCCB
Inverter I/p
Inverter o/p
Talal A.
Connecting input phase with mains phase and input neutral with mains neutral would fix this problem
Santosh Kumar
Hello Sir,
I have 2 meter connected for 2 different floors. Both have RCCB connected from main line. I have a single inverter. If I am trying to connect both floor RCCB for 1 floor get tripped. Please help me how can I connect my inverter for both floors.
Thanks
Kaleemullah
Sir, I have 3.2 kva inverter. Inverter directly connected to main board. My problem is that batteries (200mAh) life is only 6-8 months only. House loads is 800 walts. I used both flooded as well as tubular batteries.
Talal A.
Use Phoenix UGS series flooded batteries.
monty
Hello sir,
should i use seprate neutral for inverter circuit every time
Asif. Mir
We have two sets in house.. I have connected inverter line in reverse from the upper floor to ground floor… But that is showing me short circuit on the ups panel… Although i have disconnected the inverter line plugs of the other set.. What is the reason???
sajeesh
sir
i have connected 5 KVA mainline stabilizer in my home.
the invertor is connected to main line stabilizer
when the neutral to main line stabilizer is disconnected the invertor is showing overload.there is single neutral line for main line stabilizer and invertor.
Khalid mahmood
Sir, thanks alot for replying to my two earlier questions. There is another issue of current in the body of my Inverx KS 3kva inverter. It has been circuited with home wiring using one wire method i. e phase out from inverter. When power supply to the inverter is on, then there is current in the iverter body. When touched with tester, tester light fully glows. However, it works ok and appliances connecred with inverter work . But when electricity is disconnected, then there is no current in its body. In this condition also inverter works ok. How this body current issue can be resolved as it is dangerous.
Talal A.
Earthing can fix this issue. If you got earth wiring at home, connect input or output Earth of inverter with that.
Khalid mahmood
I have installed axpert ks 3 kva inverter in my home. Only inverter phase out is connected to appliances and it is working ok. I remove this inverter and install Axpert 3.2 kw VMIII inverter using phase out method, it works well if there is electricity but appliances stop when electricity goes off. What is the reason and how to fix it.
Talal A.
Align output Phase with input phase. You may need to connect output neutral to input to complete the circuit.
Khalid mahmood
Sir, you mean i should connect output nuetral from inverter to input nuetral of inverter. What if input polarities get reversed in this kind of wiring.
Talal A.
then it will cause short circuit. Use three pin plugs to make sure you do not accidentally reverse the polarity.
Abbas
@khalid have you tried the solution suggested by talal? Did it work? I am asking because i am having the same problem with this same inverter. Please do let me know.
SRR
I suggest, you add the batteries connected to the UPS in all your diagrams, to make it complete. Theses diagrams looks as if it has battery installed inside the UPS.
Besides, mention that the mains supply when present, it charges the batteries and the charging stops when fully charged.
And when the mains supply is off, the UPS converts the 12/24 V dc from the batteries to a square wave 240 V ac, and restores the supply by taking over from the mains supply. And quietly turns itself off automatically when the mains are restored, and goes back to charging mode.
ALI
Dear please let me know about i have inverex VM-2.2 kw model and on instruction manual and on inverter there is clearly mentioned that make sure your inverter is grounded. their are three output of inverter phase,netral and ground but in my house there is no any ground wiring arrangement so how i can ground my inverter.
Talal A.
Grounding (earthing) is not mandatory. Your inverter will work fine without it.
Ground connection is only made so that if current comes in metallic body of devices, it won’t give you a shock.
Shuaib Tanveer
when external supply is on the inverter is offline. the selected devices on inverter will not run. Is there any method to run inverter selected devices on external supply.
Lucky
Hi, Sir when I connect my 2000/24v ups from electric board it will trip my 10amp mcb which is connected in electric wirinng for inverter but when we connect 1000/12v it doesn’t trip what is the reason behind it,
Shuaib Tanveer
Is it possible to run all load on inverter as well as External supply if yes then How please answer.
Talal A.
You can only run select devices that wouldn’t overload inverter.
Sunil Varghese
Sir, when iam disconnecting the socket from the mains the elccectricty is going off… I want to switch off and disconnect the ups, pls help how to do it..
Talal A.
In your case, input neutral is completing the UPS circuit. If you need to disconnect your UPS, connect output plug into mains socket and make sure plug phase (L) is aligned with socket phase (L).
Praba
Hi ,i just opened my ups for cleaning purpose but while fixing it back i connected the ups in inverted method i.e.instead of input i connected it to output .Does it affect my ups?
Talal A.
If your UPS is working fine then it is not affected. Connect it properly now.
VIJAY dewangan
sir i need to connect an 0.5 kw inverter in my home to run 2 tube lights and 2 fans . but there are no special inverter wiring taken in circuit in past time. there are 1 geyser and fridge also connected in wiring circuit. can i connect the whole load in inverter? when gov. supply off then i off the geyser and fridge. is it possible?
Talal A.
Your question is answered above for your other comment. You need a bigger inverter.
VIJAY dewangan
sir, i wish to buy a 2kva inverter for 1.5kw load. but no inverter line is given in my whole house. i have 3kw load running with govt supply. but i need backup if power off by govt. supply. i wish to take 1.5 kw power by my inverter. so can i connect my whole house’s load in my 2kva inverter? but i will use only 1.5kw load when power cut and i will off the switches of unnecessary loads. is this possible to connect without inverter line to connect an inverter?
Talal A.
A 2KVA inverter is not enough to supply 1.5KW current to appliances. There is power factor involved. At most you can draw upto 1300 watts from 2KVA inverter (power factor depends on quality of inverter as well). Overloading can damage the inverter. So better get a 3KVA for safety.
You can just supply phase from inverter by running single live wire to all rooms. Neutral may be completed automatically by inverter if it supports that or you can join output and input neutrals to complete the circuit.
arshid
if we switch on inverter during no input mode, all the neutral ponts of house wiring which are not connected to the inverter will show presence of current which according to you is stray current but could you please eloberate the following;
1.should we be worried that it will effect the backup time of inverter system.
2.what is the method to completely prevent this stray current
Talal A.
1- No
2- You can not stop this leak in neutral. Your inverter is doing that. Earthing may reduce that. Your tester neon bulb will start glowing even it is minor AC voltage in neutral.
Dinesh
If we are wiring a room with common eb neutral. how we use ups neutral?
Can we use eb neutral as ups neutral….
Pls reply me….
Talal A.
Most Power inverters support completing circuit with input neutral. So you don’t need to connect output neutral. This helps to save on wire and hassle of supplying both phase and neutral to individual appliances or devices you are trying to run on inverter. Also this is safe compared to connecting output neutral with household/DB neutral as reversing input polarity can damage inverter.
Parveen Singh
Last week i purchased inverter and battery combo online through BatteryBhai. All wiring and connection points is already done by electrician. Their technician connects inverter and battery to my main supply, all working fine.
Auster Nesan
I have two energy meter one for ground floor and another for first floor. I have inverter connected to ground floor. Can I connect the same inverter to first floor as well. (First floor has separate wiring for inverter)
Talal A.
Yes. But appliances on first floor connected with inverter will also be running on same meter as ground floor.
Auster Nesan
When I connected like this the indicator is glowing. But when I switched on any device like fan or tube the indicator is switched off and no device works. Kindly help me to find and rectify my problem
Talal A.
Did you supply neutral from output too?
Auster Nesan
No sir only I supplied phase. If it be so can i connect neutral from ground floor directly or I should connect only from the inverter?
Talal A.
The circuit is not complete. Supply neutral from output of inverter. You may connect that neutral with neutral wiring of 1st floor.
Talal A.
You may also connect ground and first floor neutral together to complete the inverter circuit. That should work too.
Anurag
Sir, I have a wire from my inverter output connected to 2 bulbs and a fan in my home. the tester does not glow when it is connected to the inverter single wire. when I connect a bulb to phase wire of 220v ac mains that glows tester and other wire to inverter single wire, the bulb also glows. pls tell the single wire of my inverter is phase wire or neutral??
Talal A.
If you connected wire to L (output), it will be phase. If you inserted it in N, it will be neutral.
Make sure input plug is also connected according to the L and N written on its inner side. (most plugs have it mentioned)
Ravi Roushan
hello sir my inverter get faulty and when i removed inverter socket from board then our inverter connected home appliances are not working .and remaining are working .i cant understand what to do.
Talal A.
Connect the output plug to mains. Make sure phase is connected to mains phase.
Santosh
Recently I have shifted my flat.I have connected the UPS input and output.Output is having one wire(live wire).When power cut occur,the polarity of output socket change automatically.I have to shift the output wire from one hole to other,manually.That is when mains is on,the left hole in the output socket produce positive(live) and when power cut occur the left hole become neutral or negative and right hole of the output socket becomes positive or live.So I have to adjust it manually whenever power cut occur.
What to do?
Talal A.
Reverse the input i.e. phase should be made neutral and neutral should be made phase. That will fix the output and problem will resolve.
Ashu
Hello sir, I have installed a 740watt inverter at home using single wire method. Because of some problems it is not working , when mains is on inverter shows continues charging while mains off inverter do not discharge but when single output wire plug in the neutral to live it works but in this condition when main on so inverter don’t charge.. Please help me out with this…
Talal A.
You wiring is not aligned properly. Make sure you are connecting phase and neutral as mentioned on inverter.
Russel
I am trying to connect cyberpower ups , everything connected correctly like neutral to neutral, phase to phase and earth to earth.
without giving input when i check output of ups its very correctly working, but if i give input ups producing some noise and with the tester i can see power in neutral also. Also i can see output is going high ….what may be the problem?
Talal A.
That could be mechanical relay sound (clicks once)
If tester is glowing in neutral, there is stray voltage in that. (stray voltage should disappear when you connect the devices)
Did you check the output voltage with multimeter?
Russel
No continuously click sound comes and out put voltage in multimeter is showing 120v, i am from india so output must be 220v, if not giving input output is 220v
but i did not connect devices after giving input
Talal A.
May be your inverter is faulty. Get it fixed.
Tinu
is it necessary to connect earth wire for the input of inverter?
Talal A.
No.
Akhmad
All above method is for Line interactive UPS or for On line UPS ?
Talal A.
Line interactive.
Badarudeen
I used the method 1 connection. Now, I want to bypass mains in day time to save 20w energy which is consumed by idle Inverter even after battery is full. Is it right to connect a switch in neutral line to inverter so that when switch is in off position inverter does not draw current and mains will be available. Is there any problem with such connection-I mean damge to inverter/battery?
Thank you
Talal A.
It does not work like that. If input neutral is disconnected, inverter will switch over to backup mode and your appliances will also not work because it is the input neutral that is completing the circuit.
Turn off inverter all together and plug the output cable in mains socket.
Gibson Kurian
What are the precautions to be taken when a 1 KVA UPS is installed in a class room. Is MCBs are required in both input and output? Do I need an isolator? . The load for the UPS is a Desktop PC and a Projector. What gauge wire is required for input and out put
Talal A.
You do not need to install anything with 1KVA UPS. Just plug it in and connect desktop PC and projector with it using extension cord / power adapter. All good UPS have got built in overload and short circuit protection. UPS are always sold with input cables. Since desktop PC and projector do not draw too much power, any ordinary extension cord or power adapter will be safe to use.
You may connect UPS with surge protector if school is in area where thunderstorms often strike. The desktop PC and projector will also be secured with that.
BALA
Mine is APC inverter. Does it require two wire output system or it can work with single wire pahse with input neutral?
Talal A.
As far as I know, APC inverters disconnect both input phase and neutral when switched to backup mode. You need to supply both phase and neutral. Otherwise, you can simply connect output neutral with your mains neutral to complete the circuit.
Tony
Sir, i am an electrical engineer by profession. In my home we have 3 phase connection using a 4 pole MCB as incomer.There is an inverter connected. There is only phase output taken from the inverter output terminal. I understand that the circuit will be completed by using inverter incomer neutral.The inverter output is going to TV socket .I deliberately kept the home incomer 4 pole MCB off. Inverter was on. I tried to check the power at TV socket using a normal tester. It is glowing. That means from the inverter phase the current is flowing through the tester to my body to earth back to neutral. But how that is possible as the neutral is not connected to earth. My incomer MCB is off. So no question of transformer earthing . There is no mixing of neutral and earthing at my house. Throughout this experiment I kept the inverter earthing wire removed and kept the inverter well insulated from earth. So how can the tester work. How the circuit is getting completed. I am sure it is not stray voltage because the tester is glowing very well. If I remove the incomer neutral of the inverter the tester will not glow.bit confused pls help,
Talal A.
Your body acts as earth (ground or neutral) when you connect tester to phase. The light will glow. It only happens with very small load like that bulb inside tester. You can not run TV or anything by just supplying phase and holding its neutral with your bare hands. That won’t work.
Tony
Sir, I understand the basic principles of tester how if works. In normal case the power will flow from phase to tester resistor to lamp to body to earth to transformer neutral earthing and the ckt will be completed and light tester lamp will glow. But how that is possible when I have only inverter supply. My normal power is isolated. And I removed the earth wire of Inverter. Inverter was in on mode. I connect the tester to phase. In this case tester lamp is glowing. How the ckt is completed as there is no earth connection with invertor. And in my house there is no neutral and earth wire mixing. I hope you understand my question. If possible can I have Ur email id. I can send some drawing . Also please explain for inverter are we only doing body earthing or neutral earthing too?
Talal A.
Your body acts as neutral for very small loads. It does not matter if you isolate earth or neutral of inverter, tester circuit will be completed by your body.
SRR
The tester current does not to complete the circuit via the neutral. The reason is in star connected gen or delta star transformer, the neutral is grounded at the supply side. Now no matter how far away from the supply source you are, the phase line, when touches earth, even through your body via the tester, the circuit will still be completed, without the neutral, through mother earth. It happens, it is a mystery to me how earth with its silicon etc can act as a conductor. That is how when the suppy overhead wire breaks, falls down, and gets earthed, the power station circuit breaker trips.
k.penchalaiah
inverter connection images send me
Charandeep Singh
Hello,
I have a single wire, when it is plugged into 3 pin socket (right side), all lights on backup start working, but if we unplug it, lights on backup not works. It is rented house so UPS wiring is already present but no UPS. Recently I installed new UPS/Inverter there, all we did, plug UPS input to that same 3 pin socket and that single wire on left side of the UPS output.
Now backup light is working when electricity is on, but when it is gone, backup light doesn’t turn on.
What you think I would be doing it wrong?
Talal A.
Phase is on right side usually. Connect that wire to right side pin. Make sure phase input is also on right side. Usually phase and neutral is mentioned on input plug and output socket.
Besides, your new inverter may have been disabling common neutral when switched to backup mode. You need to connect output neutral with input neutral with a wire to complete the circuit. Do not reverse the polarity then.
YASHOTKARSH MANI TRIPATHI
Sir I have a sukam inverter, at the output socket of the inverter there are four hole’s to insert the plug. When light goes off there is no supply of current from inverter and when we insert the live wire which is input of the elelectrical appliance into another output hole manually inverter supply current. And in the same way when light comes back we have to change the live wire which is input to the electrical appliance, back into the previous output hole of inverter. I have talked to the mechanic and he is saying there is problem in the wiring ,but it was not earlier. ( single phase connection of the wire) please tell me what to do?
Talal A.
Get your wiring straightened. Inverter is not supplying neutral through input cable.
ravi
Hello sir i had wired phase only of output from inverter i want to know that my house is very big and i have wired lights in all house and the neutral wire is same as of power and it is a big cable wire so does inverter gets extra load due to that wire ??
Talal A.
no.
Al-Amin Yusuph
My house already has three phase wiring without special cabling for UPS. Can you draw for me a detailed diagram on how I can integrate my new Microtek SEBz1100 to existing wiring of one of the phases?
Please send to me your personal email for further correspondences.
Talal A.
Just give input from any phase. Connect output to your desired appliances.
Al-Amin Yusuph
I have a three phase system. Can I tap power from one phase (UPS input), and connect the output to a different phase to save on wiring.
Talal A.
yes.
you have to supply ups power to appliances. so phase does not matter.
Amit Yadav
My electrician did not put an inverter cable during the initial wiring process however now after 1 year i feel the need of an inverter. what do you suggest & how it can be done.
Thanks
Talal A.
You can follow method 1. Just supply phase wire to appliances. Most inverters are capable of completing circuit with input neutral.
Roy
Hi, after a storm, the lumimous jumbo gx works with the power reset and mcb switch off. Is this normal?