Appliance Lump Sum, End Evaluation Method
NFPA 72 Handbook Equation(1999)
• Appliance lump sum, end load evaluation:
Vload =Vterm − (Iload )(Rconductors)
Where:
Vload = minimum operating voltage of the appliance
Vterm = 20.4 (unless specified by mfr.)
Iload = Total Current draw of the connected appliances
Rconductors = total conductor resistance
