# Calculation of Electrical Load and Energy Consumption Of Panel

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## Electrical load calculation and energy consumption

This MS Excel spreadsheet calculates the following //

• Continuous and non-continuous electrical load of panel
• Total energy consumption (KWH) in daily/monthly of panel
• Size of MCB of each branch circuit of panel
• Voltage / Voltage difference of each phase
• Unbalanced load in neutral wire
• Expected temperature rise in each phase
• Size / type / tripping setting of main MCCB

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1. Pablo Buenconsejo
Oct 05, 2015

Great reference and time saver tool when performing such tedious tasks! Test and sample a calculation, use with caution.

2. aurelio gumasing
Feb 05, 2015

You are kindly requested to check your definition of diversity factor. In electrical engineering there is no diversity factor less than one but you use 0.80. This will totally affect your whole computation. if you find any diversity less than one please email me where you got it.

• Inns
Oct 01, 2015

Just noted the reference in the comments made to diversity factor: the article and associated spreadsheet is correct in using a diversity factor of 0.8 (diversity of 1 (unity) is possible in theory). If the case that a diversity factor was never less than 1 than there would be no need to ever apply a diversity factor!

3. Satbir Singh
Jun 26, 2014

Hi These spreadsheet looks really great help to electrical engineers. I am able to see them on ipad but could not download on laptop. Can anyone suggest how to do it on laptop.

4. Samuel A
Feb 06, 2014

Great site. Thank you for your willingness to share what you have and saving our time in reinventing the wheel.

5. Preethy Nalluri
Nov 13, 2013

Suppose for 1HP feeder Amps is 2 & contactor is 7,OLR range is 2.2-3.2.

How can these valves be calculated by using formula.

6. EEP4JOE
Mar 16, 2013

It is great and handy calculator with one exception. That is when calculating the total monthly consumption, the number of hours per day is used twice in the calculation. Please see below for details.

Average Using/ Day (Hours) Average Using/ Month (Hours) No of Unit Consumed/Day No of Unit Consumed/Month
18 540 900 486000
10 300 350 105000

• icarus51
Mar 16, 2013

EEP4JOE: Like you, I believe the formulas in Column “U” (# Units Consumed Per Month) are incorrect.

For example “U13” formula is “=P13*S13*R13”. The value in Cell “S13” is already calculated as a monthly value. Multiplying “S13” by “R13” results in “U13” multiplying the daily use twice.

Since the cells in Column “U” are protected, only the author can correct the problem..

7. MOHAN PATIL
Mar 15, 2013

good artical

Nov 10, 2012

i would like to receive eng technical articles

9. ARUNSHARATH
Oct 02, 2012

Excellent. Will be very useful in load calculation.

10. Bala
Jun 20, 2012

VERY WELL DONE!

11. tharanath1981
Apr 06, 2012

Yes……….. This is a Great Site…….. I was looking for a site like this……… Thank you friends

12. Edvard
Jun 26, 2011

Yes it is! Thanks to mr. Jignesh Parmar!

13. lwnt
Jun 26, 2011

good program