Electrical load calculator

sq ft
W

0 if you have none

W

0 if you have none

W

0 if you have none

W

0 if you have none

W

Nameplate watts (amps × 240 V), counted at 100%; 0 if none

W

Hot tub, well pump: nameplate watts added together

W
Electric heat
Result
105 A at 240 V

A 125 amp service covers this load. Only the loads entered are counted.

Calculated load
25.2 kVA
General load after demand factors
20,016 VA
Heating or cooling
5,220 VA

How it is calculated

  1. General: 3 VA × 2,000 sq ft + 3 × 1,500 VA kitchen and laundry circuits + appliances = 35,040 VA
  2. First 10,000 VA at 100%, the rest at 40% = 20,016 VA
  3. Larger of heating and cooling: 5,220 VA
  4. (20,016 + 5,220) ÷ 240 V = 105.2 A

Electrical load calculator by Calculate.diy.For planning only; check local code.