HomeMy WebLinkAboutLOAD CALCS_60.pdfNEC 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
220.52(A)) (minimum 2) 1500 X
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
x Garbage Disposal
x Bathroom Fan
x Microwave
x Dishwasher
x Other:
x 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
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NEC Standard Electrical Load Calculation (Rev. 03-23-2016) www.ladbs.org
Crow Residence Vail, CO
6500
6000
19500
1500
27000
8400
x
x
x
11400
x
x
12750
17000
x
x
2000
16000
x
3000
12000x
8000x
5000
400
70150
3000
3000
3000
7500
292
500
Heat tape
Hot tub
Ref x 3, ice x1, trash x1