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Join Date: Sep 2010
Posts: 2

3 Phase Load

09/01/2010 6:43 PM

Dear,

say there is a office building with following points.

38nos 5A Switched socket outlet

9nos 13A S/S/O

11nos 15A S/S/O for A/C

19 nos Fan point

48 nos light

quiz is how this load in same floor feed frim 3phase DB?In?Iz? of DB.

thanks

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#1

Re: 3 Phase Load

09/02/2010 12:09 AM

this in not quiz forum

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Guru
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#2

Re: 3 Phase Load

09/02/2010 1:11 AM

Welcome to conundrum corner.

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Guru
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#3

Re: 3 Phase Load

09/02/2010 10:22 PM

We need to know the wattage(s) of the lights, wattage or horsepower of the fans, and if any of these loads are 3-phase.

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Power-User

Join Date: Mar 2010
Posts: 105
#4

Re: 3 Phase Load

09/04/2010 1:21 AM

Dear Sir,

Some details are required to get a complete picture.

(1) Try to write gramatically so that you can get a decent reply.

(2) What is the type of the office- regular office or working 24 hrs ?

(3) What are the loads that will be on the 5A sockets. (4) What is the nature of

the load that on 15 A S/S/O.

(5) ACs-Are they Sigle Phase Or combination of 3 ph & 1 ph ?.

(6) Fans -ok. (7) Lights- Flouracent or CFL or any other type-LED ?

(8) I cannot understand- In? Iz? of DB

Thanks,

Manroop.Chennai.

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Participant

Join Date: Sep 2010
Posts: 2
#6
In reply to #4

Re: 3 Phase Load

09/08/2010 12:04 PM

Hi..Dear,

Thanking for your replying.

building type- regular office

5A S/S/O PC's , Pedesta Fan, etc;

15A S/S/O for A/C's Single Phase- not mention BTU or any .All A/C operate all working hours. so diversity factor consider as 1 )

( =15 x 230 x nos x 1 x0.001 kVA

CFL Bulbs-18W

(take sum of all kva, divide by 3 for 3 phase system.?)

In -DB's, current rating of 4p-MCB.

hope your reply.thanks again.

LU

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#5

Re: 3 Phase Load

09/07/2010 2:03 AM

Suppose you have to pay 30 Dollar to 3 persons each and you have 90 Dollars with you. How will you do it..Genious????

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