Content Overview
The LADBS NEC Standard Electrical Load Calculation form is a crucial tool for anyone involved in electrical installations and modifications within the city of Los Angeles. This form serves as a guideline to ensure that all electrical loads are accurately calculated and documented, promoting safety and compliance with local regulations. It encompasses various aspects of electrical design, including residential, commercial, and industrial applications. Users will find sections dedicated to calculating lighting loads, receptacle loads, and other essential components that contribute to the overall electrical load of a building. Additionally, the form emphasizes the importance of adhering to the National Electrical Code (NEC) standards, providing a framework for evaluating the adequacy of existing electrical systems or planning for new installations. By utilizing this form, contractors and engineers can effectively communicate their calculations and ensure that projects meet safety requirements, ultimately protecting both the occupants and the integrity of the electrical infrastructure.
Key takeaways
Filling out and using the LADBS NEC Standard Electrical Load Calculation form is crucial for ensuring compliance with electrical standards. Here are some key takeaways to consider:
- Accuracy is essential. Double-check all calculations to prevent errors that could lead to safety hazards or compliance issues.
- Understand the load requirements. Familiarize yourself with the different types of loads, such as lighting, receptacles, and appliances, to ensure all are accounted for.
- Documentation is important. Keep a copy of the completed form for your records and for any future inspections or modifications.
- Consult with professionals if needed. If you have questions or uncertainties, seek guidance from a licensed electrician or electrical engineer.
Guide to Writing LADBS NEC Standard Electrical Load Calculation
Completing the LADBS NEC Standard Electrical Load Calculation form is an essential step for ensuring that your electrical system meets safety and performance standards. This form requires specific information about your electrical load needs, and understanding how to fill it out accurately will facilitate the review process. Below are the steps to guide you through filling out the form effectively.
- Begin by entering the project address at the top of the form. Ensure that the address is complete and accurate.
- Next, provide the owner's name and contact information. This helps the department reach out if any questions arise during the review.
- In the section labeled occupancy type, select the appropriate category that best describes the building's use, such as residential, commercial, or industrial.
- Proceed to the load calculation section. Here, list all the electrical appliances and equipment that will be installed. Be specific about their wattage and quantity.
- Once you have listed the equipment, calculate the total load by adding the wattages together. This total will be crucial for determining the service size.
- In the service size section, indicate the calculated service size based on the total load. This should reflect the amperage needed for your project.
- Finally, review the entire form for accuracy. Make sure all information is complete and legible before submitting.
Once you have filled out the form, gather any supporting documents that may be required, such as plans or specifications, and submit everything to the appropriate department for review. This will help ensure that your project proceeds smoothly and complies with all necessary regulations.
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Form Preview Example
NEC Standard Electrical Load Calculation for Single Family Dwellings
(Only for Service Ratings of 120/240V, 225 Amps Max)
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Owner: |
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Location: |
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Total Floor Area of Dwelling (NEC 220.12) |
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SQFT. |
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Factor |
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Quantity |
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Volt Amperes |
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(VA) |
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“General Lighting” |
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1. |
General Lighting (SQFT X 3 VA/SQ FT (Table 220.12) |
3 X |
sqft. |
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2. |
Small Appliance Circuits (1500 VA per circuit) |
(NEC |
1500 X |
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220.52(A)) (minimum 2) |
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3. |
Laundry Circuit (1500 VA per circuit) (NEC 220.52(B)) |
1500 X |
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Total General Lighting Load (Add lines 1, 2 & 3): |
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5. |
First 3000 VA @ 100%: |
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3000 |
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Total General Lighting Load – 3000 = |
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@ 35%= |
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7. |
Net General Lighting Load (Per NEC 220.42) (Add lines 5 & 6): |
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*Fixed Appliances(if insufficient space, use back): |
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YES |
NO |
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Garbage Disposal |
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Bathroom Fan |
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Microwave |
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Dishwasher |
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Other: |
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Other: |
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Total |
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8. |
3 or less Appliances, |
Total Appliance VA; |
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4 or more Appliances, |
75% of Total Appliance VA (NEC 220.53): |
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*Other Loads (including motors, EV charger(s), etc.) |
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YES |
NO |
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Nameplate Rating |
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(VA) |
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9. Electric |
Range (8000VA or Nameplate)** |
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10. HVAC |
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11. |
Electric |
Oven |
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12. |
Electric |
Dryer (5000 VA minimum)** |
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13. |
Electric |
Vehicle Charger |
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✔ |
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14. |
Other: |
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15. |
Other: |
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16. |
25% of largest motor (NEC 430.24) |
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Total Service Load |
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Total Service Load |
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Amperes |
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***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. |
www.ladbs.org |
Documents used along the form
The LADBS NEC Standard Electrical Load Calculation form is essential for determining the electrical load requirements of a building or project. However, it is often accompanied by several other forms and documents that provide additional information and support the overall electrical permitting process. Below is a list of commonly used documents that complement the load calculation form.
- Electrical Permit Application: This document initiates the permitting process, providing the necessary details about the project and the work to be performed.
- Site Plan: A visual representation of the property, showing the layout of structures and electrical installations, which helps assess compliance with zoning and safety regulations.
- Single-Line Diagram: This schematic illustrates the electrical system's configuration, including connections and major components, aiding in load calculations and system analysis.
- Service Entrance Calculation: A detailed assessment of the service entrance requirements, including the size of conductors and service equipment needed for the electrical load.
- Panel Schedule: A breakdown of the circuits within the electrical panel, detailing load assignments and circuit protection, ensuring proper distribution of electrical loads.
- Energy Efficiency Documentation: Information on energy-saving measures and equipment, which may be required to meet local energy codes and standards.
- Inspection Request Form: A request for inspection of the electrical work performed, ensuring that it meets local codes and safety standards before final approval.
- Employment Verification Form: This form is essential for confirming an employee's work history and details, ensuring accuracy for potential new employers or agencies. More information can be found at OnlineLawDocs.com.
- Load Analysis Report: A comprehensive evaluation of the anticipated electrical loads, including calculations and justifications for the proposed electrical system design.
- Contractor's License: Proof of the contractor's qualifications and licensing, which is necessary to ensure that the work is performed by a qualified professional.
Each of these documents plays a critical role in the electrical permitting process, ensuring compliance with local regulations and promoting safety. Properly preparing and submitting these forms can streamline the approval process and help avoid delays in your project.