The LADBS NEC Standard Electrical Load Calculation form is a critical document used in Los Angeles to determine the electrical load requirements for residential and commercial buildings. This form ensures compliance with the National Electrical Code (NEC) and helps maintain safety standards in electrical installations. Properly completing this form is essential for obtaining the necessary permits and ensuring that electrical systems are adequately designed to meet demand.
The LADBS NEC Standard Electrical Load Calculation form is an essential tool for anyone involved in electrical installations and renovations in Los Angeles. This form is designed to ensure that electrical systems are properly sized and capable of handling the anticipated load. By using this standardized calculation method, electricians and engineers can assess the total electrical demand of a building, taking into account various factors such as lighting, appliances, and HVAC systems. The form guides users through a series of calculations, allowing them to determine the appropriate service size and panel capacity. It also emphasizes the importance of adhering to the National Electrical Code (NEC) standards, which help maintain safety and efficiency in electrical systems. Furthermore, the form serves as a valuable resource for permitting processes, ensuring that all necessary documentation is in order for compliance with local regulations. Understanding how to effectively complete this form can streamline project timelines and enhance overall safety in electrical installations.
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))
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:
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.)
Nameplate Rating
9. Electric
Range (8000VA or Nameplate)**
10. HVAC
11.
Electric
Oven
12.
Dryer (5000 VA minimum)**
13.
Vehicle Charger
✔
14.
15.
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
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When filling out the LADBS NEC Standard Electrical Load Calculation form, understanding the requirements and details is crucial. Here are some key takeaways to keep in mind: