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May Allah bless you for your hard work. I have one question: @3:50, you mention that to convert wattage into amperage, we need to multiply with 8 for 3 phase and with 6 phase. But this contradicts with what you told in your videos of electrical designing of G+5 and G+10 building. There you mentioned 1.9 for 3-phase and 8 for 1-phase
I appreciate your work. I am hoping for one clarification: It seems that the power formula you used for resistive and inductive load is for single phase. But, then why the voltage is 230 volts and not 120 or 110 volts. If it is a three phase formula, then where is square root of 3.
Hello bro its interesting ,ur way of teaching is good ,can u please make one video that covers all the Electrical design for commercial & residential building by using autocad ( As per the standards )
Thanks for the effort of explaining this. There is very much difference in our way to calculate it. I guess our colder climate makes it possible to rarely use larger size as 2,5 mm2. Really interesting method.
hello sir, you using the single phase 'R' i think it should be the 6 A. but as ur old video you calculated there the for three phase is 2A. and i didnt get ur logic to select the MCB selection methods for 9 A why u are not taking 10A n going for 16 A
Hey I wanted to ask according to that table, if you take less sq mm wire than rated it can burn right, but my question is why not always take the higher sq mm wire? If later I add more sockets or whatever it can add more current and it can burn the wire, but if we take 10sq mm always then the wire won't burn, and if it exceeds the mcb load then only the mcb will trip and nothing bad will happen to the wire causing fires right?
In your topic KW to Amp conversation you describe that for 1KW to amp conversation we are use 1.9 or 2 as a multipication factor (for 3phase) and in this video you describe that 1Kw to Amp convertation the MF will be 8 (fro 3 phase).. so my qustion is taht why we are not using same MF (MF= Multiplication Factor) in both cases ???
For a single bedroom here using 4 MCBs. So for 3 BHK Apartment there will be 15+ MCBs ha?? So is there any way to reduce Distribution board size by reducing number of MCBs...??
house wiring cable selection is 6amp 1.5sq mm,(1.5sq mm * 3same size)... 10amp 1.5sq mm, .....16amp 2.5sq mm,.... 20amp 4sq mm ....,25amp 6sq mm ..(6sq mm*3cables)
I think @3:50 error was made. For 3-phase multiplication factor is 1.9 and for single phase it is 8. Because to bedroom 1 and toilet 1 we are providing R-phase i.e single phase.
If budget is no issue, then just to be on the safer side is it simpler to just go with let's say 12 gauge wire instead of 16 gauge (calculated using charts)?
Here you already have written about the wire selection according to MCB, but i want to know that where it has came from..means Is there any formula which is related to load for the selection of cable size... Pls reply about this
And one more thing Sir that firstly you said to multiply by 8 for 3 phase and by 6 for 1 phase and lastly you said about the inductive for 8 and resistive by 6 then what about the 1 phase?
Hey You are telling wrong. In the ampere calculation u put 230v for both 1phase and 3 phase . Check you are calculating it for inductive and resistive loads . But u r telling it 1phase and 3phase . Actually for 3 phase the value of Amp for 1 kw is 1.9A
In India neutral wire is taken half a that of phase wire . But in gulf neutral is taken same as that of phase wire. I have clearly explained this point in video. 😊 hope you found this video useful.
You mentioned that you are having 3 phase supply, but while calculating current for 1kW which is 8A you have used 230V voltage. I didn't understand this.
For example , you are using a 3 phase energy meter but using each phase separately for each room and using single phase for load not 3 phase. I used term 3 phase to just consider power factor consideration. Overall you are using a 3 phase energy meter for which power factor is different and each phase R or Y or B is used separately for each bedroom the voltage in each phase is 230.
As u have said that for 3 phase load u hv to multiply with 8, and for 1 phase load u hv to mutiply with 6, for calculating amp. of mcb, And at last u hv consider 3 ph loads are inductive, and 1ph loads are resistive, hw do u consider that, because in 1 ph there also inductive loads like fan, acs, mixer, exhust fans, Refer to this hw do u consider the pf. of 3 ph is 0.6 and that of 1 ph 0.8,
Sir would u please help me to design the MCB and mccb for a company having 30 lamps of 40 w and 10 lamps of 12 watt and 2 laptop and 9 computer of 200 w and one printer and one xerox machine and 2 ups..
sir mcb a b c k matlab samjhye na sir..mcb a b c..kaha kaha kitna amp k anusar lgta hain details me samjhenge toh bohot hlp hoga..load k hisab se boliye
According to IS8623 there should be a ELCB/RCCB instead of isolator And how you came to know inductive are 3ph and resistive are 1ph with .6 & .8 pf respectively If you are considering inductive load 3ph then voltage must be 415 volt as per indian standard Please replay
Inductive loads are those load which have windings, like motors and chokes for florescent tube lights etc. Resistive loads are light loads, iron (non-inductive loads). Although ACs, refrigerators and fans are motor load but their PF is taken as 0.9 because they have capacitors in their circuits, which improve their power factor. Normally inductive load PF is taken as .75 and restive load as 1.
I totally disagree with this calculations. Lighting sub cct has just 2A and you're getting 2.5mmsq as cable size? The 6A mcb will work fine but economically these specifications are terrible. 4mmsq for 3x13A single sockets too? 👎
your statement 8 A for three phase wring. is wrong. 230 volt is for single phase only. (lighting) and 6A for single phase power wiring.. your statement of three phase is wrong.
Pls calculate the full load current Single Phase Lighting load =10000w Single Phase Power Load =20000w Three Phase Machine Load = 25kw Total Full load current
Plz make this with clearly and solve math with formula.here u are writing only quickly but no formula there how can understand this math u solve plz write formula
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How can you multiply Wats with ampere to get a load ... isn't it watts/voltx√3xp.f to get the ampere?
Hi sir ur system 3 phase but you can't take root three
Just completed 3 yrs courses within 15 minutes. thanks
😉 then don't forget to like and subscribe . Thanks for words 😍. Keep watching
Like and subscribe. One question. I thought in domestic household we use only 1 phase ...
Number of phases are select depending on total load requirement, as I said in video.
Doing different things sir, Much appreciated, try to make series of the calculation. Great Effort.....👏👏
May Allah bless you for your hard work. I have one question:
@3:50, you mention that to convert wattage into amperage, we need to multiply with 8 for 3 phase and with 6 phase. But this contradicts with what you told in your videos of electrical designing of G+5 and G+10 building.
There you mentioned 1.9 for 3-phase and 8 for 1-phase
I appreciate your work. I am hoping for one clarification:
It seems that the power formula you used for resistive and inductive load is for single phase. But, then why the voltage is 230 volts and not 120 or 110 volts.
If it is a three phase formula, then where is square root of 3.
Hello bro its interesting ,ur way of teaching is good ,can u please make one video that covers all the Electrical design for commercial & residential building by using autocad ( As per the standards )
You made it super simple to understand..good job
Thank u so much ♥️
Thanks for the effort of explaining this. There is very much difference in our way to calculate it. I guess our colder climate makes it possible to rarely use larger size as 2,5 mm2. Really interesting method.
Welcome. 😃
Nice explanation with high potential person
Thanks
In the inductive load you divided it by 230x power factor... Since it is 3 phase should it not be 230V x 0.6?
Wow really its very useful for me
Thanks
hello sir, you using the single phase 'R' i think it should be the 6 A. but as ur old video you calculated there the for three phase is 2A. and i didnt get ur logic to select the MCB selection methods for 9 A why u are not taking 10A n going for 16 A
Nice video brother
Good job it is very useful for me
Thanks for doing this type of videos
Welcome
Thanks for easy for learning understanding
Hey, you're always welcome here! 😊
Thanks 🙏 I appreciate your time 😎
Always welcome ❤
You make understand the whole stuff in 10min thanku
Thanks 😊
Very very good Vedios u r making
Thanks
Hey I wanted to ask according to that table, if you take less sq mm wire than rated it can burn right, but my question is why not always take the higher sq mm wire? If later I add more sockets or whatever it can add more current and it can burn the wire, but if we take 10sq mm always then the wire won't burn, and if it exceeds the mcb load then only the mcb will trip and nothing bad will happen to the wire causing fires right?
The cost will increase if you take higher size wire
Super video bro.small question.
Can you tell me can I connect phase with ground instead of phase with neutral.is there any problem
Thanks . No you can't
But the load is still working.
if you connect live with ground...nothing happens... circuit is not closed
In your topic KW to Amp conversation you describe that for 1KW to amp conversation we are use 1.9 or 2 as a multipication factor (for 3phase) and in this video you describe that 1Kw to Amp convertation the MF will be 8 (fro 3 phase).. so my qustion is taht why we are not using same MF (MF= Multiplication Factor) in both cases ???
I.also have this doubt
In this video u have to taken 8A for 3 phase but u did take 230v in calculation.For 3 phase you should have to take 415 or 440 v.can you explain it
Nice vedio .Thank you very much.
Welcome
Great video- I was just wondering whether you draw breath. Whao can you rattle off at 100mph
Hahahah 😂 Thank you!
very impressive sir. can one draw a single line diagram for this facility ? If yes, please how?
Isn’t it divide by root 3 for 3 phase during current calculation. Please guide. Nice video
it should be divided by root 3 same doubt
It's general calculation for type of load. Haven't mention 3 phase or single phase
Active power (True power) is expressed as:
P= VI.Cos Φ
P = V x I x Cosθ (in Single phase AC Circuits)
P = √3 x VLx IL x Cosθ or (in Three Phase AC Circuits)
Very helpful video. Thanks
This is the only video with clear data excellent one thanks Mcb clearly explained
How to know/calculate that main MCB is 30A at 10:39 and the wire need 16mm at 11:40 *Please please reply i need your help*
For a single bedroom here using 4 MCBs. So for 3 BHK Apartment there will be 15+ MCBs ha??
So is there any way to reduce Distribution board size by reducing number of MCBs...??
Waiting for Reply
Bro can yo do.. how to draw a electrical wiring diagram for a house and estimation and coasting for that..and this video helped a lot thanks
Thanks! Will try to make a video on that. Thanks for suggestion
Can you make it now sir?
house wiring cable selection is 6amp 1.5sq mm,(1.5sq mm * 3same size)... 10amp 1.5sq mm, .....16amp 2.5sq mm,.... 20amp 4sq mm ....,25amp 6sq mm ..(6sq mm*3cables)
Sir 250 amp mccb me kitna wait dal sakte hai
Plz tell in Hindi my English some week But this video is so good thanks for this
Very good defined, thanks.
Nicely explained.. thanks for the efforts..
Thanks
Celling fan kitna ward hota h pres kitna ward hota h sir g
Thanks very much,but you didn't explain how do you select the mcb?
Which base do you stand on to select the mcb?
According to amperes
I think @3:50 error was made. For 3-phase multiplication factor is 1.9 and for single phase it is 8.
Because to bedroom 1 and toilet 1 we are providing R-phase i.e single phase.
from where did you get this selection table?
We followed this in my company
If budget is no issue, then just to be on the safer side is it simpler to just go with let's say 12 gauge wire instead of 16 gauge (calculated using charts)?
Dear sir please make video on design light calculation and number of light fixtures required for residential commercial and industrial area...
Here you already have written about the wire selection according to MCB, but i want to know that where it has came from..means Is there any formula which is related to load for the selection of cable size...
Pls reply about this
The are the standards we follow in our company .
And one more thing Sir that firstly you said to multiply by 8 for 3 phase and by 6 for 1 phase and lastly you said about the inductive for 8 and resistive by 6 then what about the 1 phase?
And thanks for replying...
Infuctive loads are mostly used in 3 phase so multiplication factor is 8 and on single phase supply resistive loads are used so 6
Thanks once again
Brother if we have 2000/24v inverter then how much ampere mcb required.
lucky delhi ...10 amps mcb
Bhai ek ghar me solar lagega to kaise three phase ki wiring kare please thoda baatain....
Sir can u make a video of run and start capacitor selection according to motor rating
Hey You are telling wrong. In the ampere calculation u put 230v for both 1phase and 3 phase . Check you are calculating it for inductive and resistive loads . But u r telling it 1phase and 3phase . Actually for 3 phase the value of Amp for 1 kw is 1.9A
Can you please explain why you are taking neutral wire less than the phase.( i.e in MCCB of 63A phase wire is 16sqmm but neutral is if 8sqmm)
In India neutral wire is taken half a that of phase wire . But in gulf neutral is taken same as that of phase wire. I have clearly explained this point in video. 😊 hope you found this video useful.
@@ElectricalInfinity In Denmark too, we have neutral same as fase. At least in housing installations.
Nice. Keep it up
Thanks 😊
Sir you said multiple 8 for 3 phase
For example 75 kw
75×8=600amps is this right
How equal 75 kw to 600 amps
75 W = 0,075 kW !!
You mentioned that you are having 3 phase supply, but while calculating current for 1kW which is 8A you have used 230V voltage. I didn't understand this.
For example , you are using a 3 phase energy meter but using each phase separately for each room and using single phase for load not 3 phase. I used term 3 phase to just consider power factor consideration. Overall you are using a 3 phase energy meter for which power factor is different and each phase R or Y or B is used separately for each bedroom the voltage in each phase is 230.
Sir pls proper wire size calculation formula bataiye for phase wire & nutral wire size
As u have said that for 3 phase load u hv to multiply with 8, and for 1 phase load u hv to mutiply with 6, for calculating amp. of mcb,
And at last u hv consider 3 ph loads are inductive, and 1ph loads are resistive,
hw do u consider that, because in 1 ph there also inductive loads like fan, acs, mixer, exhust fans,
Refer to this hw do u consider the pf. of 3 ph is 0.6 and that of 1 ph 0.8,
i got same doubt
All loads hes used 1ph ie geyser,light ,ac, thats why he take 220 v
Please make one video of house wiring diagram
why did not you apply diversity factors when sizing MCB?
Sir would u please help me to design the MCB and mccb for a company having 30 lamps of 40 w and 10 lamps of 12 watt and 2 laptop and 9 computer of 200 w and one printer and one xerox machine and 2 ups..
Superb
How to prepare load schedule in the excel sheets can u explain can u make the video
Sure i can
sir mcb a b c k matlab samjhye na sir..mcb a b c..kaha kaha kitna amp k anusar lgta hain details me samjhenge toh bohot hlp hoga..load k hisab se boliye
Why root 3 not mentioned in 3phase power formula
sir at last what you have said 8amper for 3 phase and 6amper for single phase???????????????
For lighting 1 sq mm is enough sir...for power 2.5 and for lighting with few bulbs...we can use 1 mm as a domestic supply
yes, it is enough. But it is good to take 2.5 to prevent wire heating or burn when overload.
Could you show me about multiplication start working of electrical equipment?(ki)
Pls make vedio on gulf offices power load calculation
is it different the wire size for single phase,and what is the use of 1 sqmm and 1.5sq mm pliz
Plz go through this.....
th-cam.com/video/vsb9Vm9NQPY/w-d-xo.html
is this table differ in each country ? or same? how I get this table?
Same
Sir 10 amps ka mcb available hone ke bad bhi 16 amps ka mcb kyu lagay
For continous lighting load ,will be the breaker & cable size same as in ur video description table
Is there any code for recommended lux levels?
Thank you Sir
Welcome
what is that 30A rccb or MCB, if that is MCB what is the use?
That must be RCCB...
Bro... if you take ac on 11.2 A bt,why should take 25 A mcp ...it wire size is also increase bt waste of money sir ...tell me about it
Hare no mentioned wire distance so how to calculate that.....how
According to IS8623 there should be a ELCB/RCCB instead of isolator
And how you came to know inductive are 3ph and resistive are 1ph with .6 & .8 pf respectively
If you are considering inductive load 3ph then voltage must be 415 volt as per indian standard
Please replay
All the loads r 1ph i.e ac,geyser,lights not 3 ph thats why he used 220 v in formula
3 PHASE POWER FORMULA IS 1.732*VICOS$ RIGHT ? HOW HERE TOOK AS VICOS$ ?
Active power (True power) is expressed as:
P= VI.Cos Φ
How you select Circuit breaker........You calculate total load Amp but I don't Understand how you select C.B. plz explain sir
Can you plz explain inductive loads and resistive loads
Inductive loads are those load which have windings, like motors and chokes for florescent tube lights etc. Resistive loads are light loads, iron (non-inductive loads). Although ACs, refrigerators and fans are motor load but their PF is taken as 0.9 because they have capacitors in their circuits, which improve their power factor. Normally inductive load PF is taken as .75 and restive load as 1.
Isn’t it divide by root 3 for 3 phase during current calculation please guid
For 1ph or 3ph Amp remains same and for inductive and resistive load it varies
Plz correct
I totally disagree with this calculations. Lighting sub cct has just 2A and you're getting 2.5mmsq as cable size? The 6A mcb will work fine but economically these specifications are terrible. 4mmsq for 3x13A single sockets too? 👎
Thanxxx sir
6:45. You're multiplying power and current?
than u very much
In previous vedio 3phase kw to amps x by 2 but here x by 8
Satplijar ke connection ki video bna do plz
Ok
why phase and neutral wire size are different.
Because neutral have less ampere in it.
some pretty guess-workings a bit confusing. How 11 Amp gets 25 MCB Amp???????
Please make a video single phase
how to select the suitable Short Circuit Current Capacity (kA),
for the main isolator in the MDB
For 3 phase voltage should be 420v but you taken 230v in current calculation..
At last calculation was for resistive and inductive load . Not for 3 phase.
But you mentioned for three phase we have to multiply by 8A,hw it will work????
Nice, you right guy.
Easy to understand. Thanks.
bhai phase 2.5 and nutral 1.5 q kar rakhi h aapne jabki yhan dono wire same li jati h
Ravi Singh correct and how he select a neutral less size.. As both phase And neutral draws same current/ power. Also why we need earth as same size. ?
your statement 8 A for three phase wring. is wrong. 230 volt is for single phase only. (lighting) and 6A for single phase power wiring.. your statement of three phase is wrong.
I want to know mm2 means and detail size of wire
Pls calculate the full load current
Single Phase Lighting load =10000w
Single Phase Power Load =20000w
Three Phase Machine Load = 25kw
Total Full load current
It's 165.66A for 415v. & 0.8 power factor
@@misteresam7045 plz discribe
Bro what are three equipment comes under indective load...
Please send full tablet collums of wires selection... If you can...
explanation so clear
Plz make this with clearly and solve math with formula.here u are writing only quickly but no formula there how can understand this math u solve plz write formula
I have uploaded new video with formulas for ampere calculations
Bro 3 phase voltage 415v not 220.
The calculation at last was for inductive and resistive load. Not for 3 phase or single phase.
Load u r using its all single phase but why u considering it 3 ph ,i think multiply factor is wrong
If Your total load connected is coming above 5KW You should use 3 Phase .
❤
Its wrong.. 8A and 6A both are for single phase