Homepage LADBS NEC Standard Electrical Load Calculation Form

LADBS NEC Standard Electrical Load Calculation Sample

NEC Standard Electrical Load Calculation for Single Family Dwellings

(Only for Service Ratings of 120/240V, 225 Amps Max)

 

 

Owner:

 

 

 

 

Location:

 

 

 

 

 

 

 

Total Floor Area of Dwelling (NEC 220.12)

 

 

 

 

 

 

 

 

 

SQFT.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Factor

 

 

 

 

 

 

 

 

Quantity

 

 

Volt Amperes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(VA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“General Lighting”

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

General Lighting (SQFT X 3 VA/SQ FT (Table 220.12)

3 X

sqft.

 

 

 

2.

Small Appliance Circuits (1500 VA per circuit)

(NEC

1500 X

 

 

 

 

 

220.52(A)) (minimum 2)

 

 

 

 

 

 

 

 

 

 

 

3.

Laundry Circuit (1500 VA per circuit) (NEC 220.52(B))

1500 X

 

 

 

 

4.

Total General Lighting Load (Add lines 1, 2 & 3):

 

 

 

 

 

 

 

 

5.

First 3000 VA @ 100%:

 

 

 

 

 

 

 

 

 

3000

6.

Total General Lighting Load – 3000 =

 

 

@ 35%=

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.

Net General Lighting Load (Per NEC 220.42) (Add lines 5 & 6):

 

 

 

 

 

 

 

 

 

 

 

 

*Fixed Appliances(if insufficient space, use back):

 

 

YES

NO

 

 

 

Garbage Disposal

 

 

 

 

 

 

 

 

 

 

 

 

 

Bathroom Fan

 

 

 

 

 

 

 

 

 

 

 

 

 

Microwave

 

 

 

 

 

 

 

 

 

 

 

 

 

Dishwasher

 

 

 

 

 

 

 

 

 

 

 

 

 

Other:

 

 

 

 

 

 

 

 

 

 

 

 

 

Other:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total

 

 

 

8.

3 or less Appliances,

Total Appliance VA;

 

 

 

 

 

 

 

 

 

 

 

 

4 or more Appliances,

75% of Total Appliance VA (NEC 220.53):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Other Loads (including motors, EV charger(s), etc.)

 

 

YES

NO

 

Nameplate Rating

 

 

 

(VA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9. Electric

Range (8000VA or Nameplate)**

 

 

 

 

 

 

 

 

 

 

 

10. HVAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11.

Electric

Oven

 

 

 

 

 

 

 

 

 

 

 

 

 

12.

Electric

Dryer (5000 VA minimum)**

 

 

 

 

 

 

 

 

 

 

 

13.

Electric

Vehicle Charger

 

 

 

 

 

 

 

 

 

 

14.

Other:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15.

Other:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16.

25% of largest motor (NEC 430.24)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total Service Load Volt-Amperes (VA) (Add lines 7, 8 & 9 thru 16) =

 

 

 

 

Total Service Load Volt-Amperes / 240-volts =

 

 

Amperes

 

 

 

 

***Service Rating (Amperes)=

*For every “YES” answer, indicate VA rating of equipment

**Nameplate rating must be used if larger

***Service Rating shall be greater than or equal to the Service load

As a covered entity under Title II of the Americans with Disabilities Act, the City of Los Angeles does not discriminate on t he basis of disability and, upon request will provide reasonable accommodation to ensure equal access to its programs, services and activities.

NEC Standard Electrical Load Calculation (Rev. 03-23-2016)

www.ladbs.org

Instructions on Utilizing LADBS NEC Standard Electrical Load Calculation

Filling out the LADBS NEC Standard Electrical Load Calculation form is an essential step in ensuring that your electrical system is designed safely and effectively. This process requires careful attention to detail and accurate information. Below are the steps to guide you through completing the form.

  1. Begin by gathering all necessary information about your electrical system. This includes the type of building, its purpose, and the number of electrical appliances and fixtures.
  2. Clearly state the address of the property at the top of the form. Ensure that it is complete and accurate.
  3. Fill in the details regarding the type of occupancy. Specify whether it is residential, commercial, or industrial.
  4. List all major electrical loads in the designated section. Include items such as lighting, heating, cooling, and any large appliances. Be thorough in your descriptions.
  5. Calculate the total load for each category of electrical appliance. Use the appropriate formulas as indicated on the form to ensure accuracy.
  6. Provide the total calculated load at the end of the section. This is crucial for determining the overall capacity needed for your electrical system.
  7. Review the calculations and information provided. Ensure that all entries are correct and complete before submission.
  8. Sign and date the form at the bottom. This certifies that the information provided is true and accurate to the best of your knowledge.

Once you have completed the form, it will be ready for submission to the appropriate authorities for review. Make sure to keep a copy for your records, as it may be needed for future reference or inspections.

Misconceptions

Understanding the LADBS NEC Standard Electrical Load Calculation form can be tricky. Here are eight common misconceptions that people often have about this important document:

  1. It's only for new constructions. Many believe this form is only necessary for new buildings. In reality, it’s also required for significant renovations or upgrades to existing electrical systems.
  2. You don’t need it for small projects. Some think that minor electrical work doesn’t require this form. However, even small projects can impact the overall load and safety, making the form essential.
  3. It's a one-size-fits-all form. People often assume the form is generic. In truth, it needs to be tailored to the specific requirements of each project, considering factors like square footage and intended use.
  4. Only licensed electricians can fill it out. While licensed professionals often handle this form, homeowners can also complete it, provided they understand the requirements and calculations involved.
  5. It's only about calculating load. Many think the form is solely for load calculations. However, it also addresses safety, compliance with codes, and planning for future electrical needs.
  6. Once submitted, it’s final. Some believe that once the form is submitted, no changes can be made. In fact, adjustments can be made if project specifications change or if errors are found.
  7. It's only necessary for residential projects. This form is often seen as applicable only to homes. However, commercial projects also require it to ensure compliance with safety standards.
  8. Filling it out is a quick process. Many underestimate the time it takes to complete the form accurately. Thorough calculations and proper documentation can make it a more time-consuming task than anticipated.

By clearing up these misconceptions, you can approach the LADBS NEC Standard Electrical Load Calculation form with more confidence and clarity.

Documents used along the form

The LADBS NEC Standard Electrical Load Calculation form is an essential document used in the electrical permitting process. Alongside this form, several other documents may be required to ensure compliance with local regulations and safety standards. Below is a list of commonly used forms that complement the electrical load calculation process.

  • Electrical Permit Application: This document is necessary to obtain permission from local authorities to perform electrical work. It typically includes details about the project, the type of work being done, and the contractor's information.
  • Site Plan: A site plan provides a visual representation of the property and outlines the location of electrical installations. It helps inspectors understand how the electrical system integrates with the existing layout.
  • Mobile Home Bill of Sale: This legal document is essential for transferring ownership of a mobile home. For a comprehensive overview, you can refer to All Washington Forms.
  • Electrical Plans: Detailed electrical plans illustrate the design of the electrical system, including circuit layouts, panel locations, and load distribution. These plans are crucial for ensuring that the installation meets safety codes.
  • Load Calculation Summary: This summary consolidates data from the electrical load calculations, offering a clear overview of the expected electrical demand. It helps in verifying that the proposed system can handle the load safely.
  • Inspection Request Form: Once the electrical work is completed, this form is submitted to schedule an inspection. It confirms that the installation is ready for review by a qualified inspector to ensure it meets all applicable codes.

Having these documents prepared and organized can streamline the permitting process and facilitate a smoother inspection experience. Ensuring that all necessary forms are completed accurately will help maintain compliance and promote safety in electrical installations.