Free LADBS NEC Standard Electrical Load Calculation PDF Form Get Document

Free LADBS NEC Standard Electrical Load Calculation PDF Form

The LADBS NEC Standard Electrical Load Calculation form is a vital tool used to determine the electrical load requirements for various types of buildings and installations. This form ensures that electrical systems are designed safely and efficiently, adhering to local codes and standards. By understanding how to fill out this form correctly, you can help ensure compliance and promote safety in your electrical projects.

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Outline

The LADBS NEC Standard Electrical Load Calculation form is an essential tool for anyone involved in electrical installations and planning within the City of Los Angeles. This form is designed to ensure that electrical systems are adequately sized to handle the anticipated loads safely and efficiently. It encompasses various factors, including the type of occupancy, the total square footage of the space, and the specific electrical appliances and systems that will be utilized. By providing a structured approach to load calculations, the form helps prevent overloading circuits, which can lead to safety hazards such as electrical fires. Additionally, the form includes sections for both residential and commercial properties, allowing for tailored calculations based on unique requirements. Users must accurately complete each section to comply with local codes and regulations, which ultimately contributes to the overall safety and reliability of electrical installations. Understanding and correctly using this form is crucial for contractors, electricians, and property owners alike, as it lays the groundwork for safe and effective electrical design.

Key takeaways

Filling out the LADBS NEC Standard Electrical Load Calculation form is essential for ensuring that electrical systems are safe and efficient. Here are some key takeaways to consider when using this form:

  • Understand the Purpose: The form is designed to calculate the electrical load for a building or structure, ensuring compliance with safety standards.
  • Gather Accurate Information: Before starting, collect all necessary details about the electrical appliances and systems in the building.
  • Follow the Guidelines: Adhere to the guidelines provided by the National Electrical Code (NEC) to ensure accuracy in your calculations.
  • Use the Correct Units: Make sure to use consistent units throughout the form, typically in watts or kilowatts.
  • Calculate Demand Loads: Understand how to calculate demand loads for different types of appliances, as they can vary significantly.
  • Consider Diversity Factors: Apply diversity factors where applicable, as not all appliances will be used at full capacity simultaneously.
  • Document Everything: Keep a record of your calculations and any assumptions made during the process for future reference.
  • Review for Errors: Double-check your entries to avoid mistakes that could lead to underestimating or overestimating loads.
  • Consult Local Codes: Be aware of any local amendments to the NEC that may affect your calculations or requirements.
  • Seek Professional Help: If unsure about any aspect of the form or calculations, consider consulting a licensed electrician or electrical engineer.

By keeping these points in mind, you can effectively fill out and utilize the LADBS NEC Standard Electrical Load Calculation form, contributing to safer electrical installations.

Form Preview Example

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