Electrical Load Calculator for Non-Dwelling Buildings

As I explained before that ordinary Non-Dwelling Buildings Loads will be as follows: 

  1. Lighting loads, 
  2. Receptacles Loads, 
  3. Kitchen Loads, 
  4. Heating, Ventilation and air conditioning Loads (Non-Coincident Loads), 
  5. Motor Loads, 
  6. Other Loads. 

For the above Non-dwelling Loads, I explained the following points:

  • Where and how to distribute each type of load in a dwelling unit as per NEC code? 
  • How to calculate its Demand load for feeder and service sizing calculations 

This was done in the following Articles:

Today, I introduce to you, the most professional Excel Sheet for calculating the Total Demand Load for all types of Non- Dwelling Buildings as per NEC Code.

Electrical Load Calculator for Non-Dwelling Buildings

This excel Sheet is exclusive for our website Electrical Know how, you will not find this Professional excel sheet anywhere in the web.

1- Advantages:

The Advantages of using this sheet than other similar ones are as follows:

  • It explains all the NEC rules applied for each calculation step inside the sheet, for easy reviewing for each step calculations, rules, exceptions and tables. 
  • It is the most applicable calculator for all types of Non-Dwelling Buildings.
  • It is the easy one for understanding and application. 
  • Some Demand Factors Tables are included in the excel sheet and no need to manually extract its data from the code as other similar ones do. 

2- Table of Contents:

Table of Contents:
This Excel Spreadsheet contain (4) worksheets:
1- Cover
2- Calculator
3- Tables
4- Defintions

Cover Sheet

Part of Calculation Sheet

Tables Sheet

Definitions Sheet

3- Using Guide:

Using Guide:

Cell for Data Input

Cell for Sub- Result

Cell for Final Result

Cell for Total Demand Load of the Building

4- Free Download

to download your copy of ElectricalLoad Calculator for Non-Dwelling Units as per NEC Code, just click on the link.

In the next article, I will explain load calculations for special Non-Dwelling Buildings (Schools, Existing Installations and New Restaurants) by using NEC optional method. Please, keep following. 


  1. wonderful table and i didnt find any table regarding these calculation as your wonderful excel sheet
    but i found may be 2 mistakes in the excel sheet
    as follows
    section six the largest motor there is an error in the function

    section 4
    for the receptacle load calculation the last part you forgot to apply demand factor as 100% of first 10000 + 0.5* the balance the excel sheet used all the value without any derating

    thanks again for the wonderful table i didnt find anyhting sismilar to it in all internet site

  2. Thanks for sharing these information. They are really helpful for newbies.