Electrical tools (MS Excel Spreadsheets)
This section is dedicated to tools every electrical engineer can use in daily work. These spreadsheets below will make your job much easier, allowing you to shorten the time used for endless calculations of cables, voltage drop, various selections of circuit breakers, capacitors, cable size, and so on.
Spreadsheets are mostly developed by experienced electrical engineers and programmers (thank you Mr. Jignesh Parmar!) and by well-known manufacturers of electrical equipment. They all really did an awesome job, we must admit!
Just to mention that all calculation spreadsheets are free for download! ;)
Electrical calculations (MS Excel Spreadsheets)  | Download |
Motor Starting Calculation Spreadsheet (by Hemant Kashikar)  | . |
Cable Designing Program  | . |
| Calculate Home Electrical Load & Electrical Bill | . |
| Calculate Bus Bar Size and Voltage Drop | . |
| Calculate Electrical Load and Energy Consumption of Panel | . |
| Calculate Electrical Load of Panel | . |
| Calculate Insulation Resistance Value | . |
| Calculate Number of Lighting Fittings and Lumen Output | . |
| Calculate Size of Battery Bank and Inverter | . |
| Calculate Size of Solar Panel, Battery Bank and Inverter | . |
| Circuit Breaker Tripping Settings | . |
| Conduit Size Selection Program | . |
| Design of Earthing Mat for Sub-Station | . |
| Selection of MCCB, ELCB For Main-Branch Circuit | . |
| Selection of fuse and setting of instant short circuit tripping of CB | . |
| Short Circuit Current Calculation at Various Point of Electrical Circuits (Isc) | . |
| Size of Capacitor For Power Factor Improvements | . |
Fault Current Calculation  | . |
| Electrical Safety Program Arc Flash Calculator | . |
| E-Feeder and Cable Calculator | . |
| SquareD – Selecting capacitor size | . |
| Voltage Drop Calculator – Albany Technical College | . |
| Cable size calculations based on motor horse power (HP) and specified current | . |
| Voltage Regulation Percentage of Small Distribution Line | . |
| Calculate size of air conditioning for room | . |
| Residential Load Calculations | . |
| Pump Efficiency Calculation Tool | . |
| Transformer Fault Current Calculation | . |
| Powerline Voltage Drop Calculation | . |
| Electrical Safety Program Arc Flash Calculator | . |
| Transformer And Short Circuit Calculator | . |
| Electrical calculations (MS Excel Spreadsheets) | Download |
| Power Factor Correction Calculation | . |
| Calculation of Touch Voltage and Ground Current | . |
IDMT (Inverse Definite Minimum Time) Relay Calculation  | . |
| Calculate Size of Diesel Generator | . |
| Electrical Pole’s Trasverse Load Calculation | . |
| Electrical Engineering General Formulas | . |
| CO2 Savings Calculator | . |
| Available Fault Current Selective Coordination | . |
| Power Factor Table Calculator | . |
| NEMA Motor Data Calculator | . |
| Estimated Voltage Drop Calculator | . |
| IEC Motor Data Calculator | . |
| Calculation of Size of Transformer, Fuse and Circuit Breaker | . |
| Calculate Size Of DOL and Star-Delta Starter Components | . |
| Calculate size of transformer and voltage due to starting of large size motor | . |
| Power Quality Solution Selection Spreadsheet | . |
| Spreadsheet For Calculating Size Of Motor Pump | . |
| Spreadsheet For Calculation The Required Number Of fixtures And Illuminance Level | . |
| Lightning Protection Risk Assessment Calculator/Spreadsheet | . |
| Load Listing, Calculations and Generator Sizing Spreadsheet | . |
| Spreadsheet for Transformer Losses Calculation | . |
| Motor Voltage Drop Calculator (Spreadsheet) | . |
| Spreadsheet to calculate the size of neutral earthing transformer | . |
| Spreadsheet to Calculate Short Circuit Capacity of Diesel Generator Synchronizing Panel | . |
| Power factor correction calculations for power system | . |
| Distribution Transformer Calculations | . |
| Calculation of electro magnetic field (EMF) around T&D overhead lines | . |
| Earthing system design tool for low voltage installations | . |
HT motor cable calculations
Dear sir,
Can you please help in my one project ..I have some doubts on distribution system i.e. hvds and lvds
I think lvds is better than hvds in suburban areas because of large no’s of consumers
Plz help me on this
DEAR SIR,
I HAVE ONE TECHNICAL QUERY PLAESE I WANT SOLUTION
” AT WELL PAD I WANT TO PROVIDE EARTHING TO METALIC FENCE FENCE L&W IS 180X150 M2.
FAULT CURRENT IS 10 KA. VOLTAGE IS 660V AC, LENGTH FROM STATION TO WELL PAD IS 5KM, CABLE SIZE TO SUPPLUYING 660V AC 24V DC CONVERTER PANEL IS 2CX35 SQ MM CABLE.
I WANT TO KNOW CAN I USE 25SQMM ALUMINIUM CABLE FOR FENCE, POST, MAIN GATE EATRHING.
DEAR SIR,
I HAVE ONE TECHNICAL QUERY PLAESE I WANT SOLUTION,WE HAVE OLD DG THATS CONSUMING MORE DIESEL, AROUND 10 YERS OLD, ACCORDINGLY WE HAVE TO REPLACE NEW DG, PLEASE ENERGY COST WORK WITH EXCEL SHEET.
OUR DG DETAILS FOR YOUR REFERENCE.
1) 180KVA,125KVA
2) Current SEGR 33RUPES PER UNIT.
ELECTRICAL ENGINEERING PORTAL especially to the Author.
Thank you so much for sharing all these tools and documents. These are very important for me especially that I’m teaching college students and doing research also.
Once again, thank you and more power.
Truly yours,
Ellezer Gallon Casiño
Dear all: thanks a lot for all your useful info; that is what we need to work for! The devil is in the details!
Thanks, very usefull
I just love your web site and for a old guy who does estimates and take offs its a great tool. I do have a request. I am being asked by the local AHJ to provide him with a Calc. sheet for a commercial office building where were are replacing (Like as Like) the old FPE panels w/ new updated Sq D. No cables or breakers or circuits are being changed. Just a replacement panel for the old Fed Pacific. He now wants me to do a “load” calc sheet for each office unit, each Panel. Do you have a excel sheet for this Commercial Application? Something simple and easy. The resi one wont work here. Thanks
Steven,
As an AHJ myself, I wonder why he needs a load calc. Are you sure that he didn’t ask for a fault current analysis instead since the older FPE panels didn’t have an AIC rating, so they default to 5kA per the NEC. The new Square D panels would need to be either fully rated for the calculate fault currents at the panel replacement locations or series rated, assuming your local AHJ allows series ratings.
Sorry about the typos above. My cat jumped on my keyboard.
BTW – Replacing a panel with another panel isn’t a like for like replacement, especially for older panels because of the lack of a fault current rating.
Hi,
How to download this template?, I need it.., please.
Thanks.
transformer size-2000kva(11kv/433v)
cable length-150 feets
hv/lv amps-104/2666
we required cable size from transformer to pmcc panel
11kV HT incomer feeder setting: I>>>=INF., I>>=2.5, TI>>=0.65s, IP=0.8, TP=0.25s, IE>>=0.25, TIE>>=0.65s, TEP=0.4s, IEP=0.1
11kV HT outgoing feeder setting: I>>>=INF., I>>=3.0, TI>>=0.3s, IP= 1.0, TP=0.3s, IE>>=0.31, TIE>>=0.15s, TEP=0.1s, IEP=0.1
With above settings, can anybody suggest why incomer feeder tripped during outgoing feeder cable fault ?
good work gives good appreciation…….. i like this…….. done a good job thank u
Although I am not an electrical engineer but an electronics on I appriciate your contribution. Some subjects are very similar between the two careers.
Thanks a lot.
great assistance.I have downloaded a few of the spreadsheet. hopefully they serve the intended purpose. great work nevertheless
hi
please send me the password
They are so helpful. Can you please make one for vector group calculations. It must be able to draw the grouping as you put the figures on the spreadsheet.