HomeMy WebLinkAboutLOAD CALCULATIONSNEC 220.83 - Residential Load Calculation Version 2.1
L1/L2 240 V
Floor Area 2,287 square feet x 3VA/sq ft 6,861 VA
Small Appliance Circuits 6 circuits x 1500VA/circuit 9,000 VA
Laundry Circuits 1 circuits x 1500VA/circuit 1,500 VA
Breaker VA
Other 40 7,680
Other 40 7,680
Dryer 30 5,000
Dishwasher/Garbage Disposal 20 2,700
00
00
00
00
00
00
120V Range Hood 20 1,500
120V Microwave 20 1,200
00
25,760 total VA
Total of non air-conditioning loads:43,121 total VA
First 8 kVA of load at 100% 8,000
Remainder of load at 40% 14,048
Adjusted total of non air-conditioning load 22,048 VA
Breaker VA
Sum of A/C Equipment Units 50 9,000
Sum of Electric Furnaces 50 9,600
00
Total of A/C Loads and All Other Loads:31,648 total VA
Total Proposed Calculated Load:131.87 Amps
NEC 220.83(B)(3)"The nameplate rating of all appliances… ranges, wall-mounted ovens, counter-mounted cooking units…
clothes dryers that are not connected to the laundry branch circuit… [and] water heaters"
Load (240V unless otherwise indicated)
NEC 220.83(B)"Heating and air-conditiong load…"
NEC 220.83(B)(2)"1500 volt-amperes for each 2-wire, 20-ampere small appliance branch circuit and each laundry branch
circuit…"
NEC 220.83(B)"The general calculated load shall be not less than 100% of the first 8 kVA plus 40% of the remainder of
the following loads..."
NEC 220.83(B)(1)"The calculated floor area shall not include open porches, garages, or unused ... spaces…"
Daniel Moor e