donf
06-26-2008, 10:54 AM
Please forgive this rudimentary question, but I need to get a good freeware voltage drop calculator or a corrected formula
I have been using the following formula:
%Ed=k*I*D*C/CMA where:
K = 12 for copper or 10 for Aluminum
I = Load
D = Distance
C = Number of Conductor
CMA = Area of cable
%Ed=12*60*90*2/26240
%of Ed 4.9 240* 4.9% = 12 Ed = 240-12 = 228 VAC
I cannot seem to get the percentage correct, what am I doing wrong?
I have been using the following formula:
%Ed=k*I*D*C/CMA where:
K = 12 for copper or 10 for Aluminum
I = Load
D = Distance
C = Number of Conductor
CMA = Area of cable
%Ed=12*60*90*2/26240
%of Ed 4.9 240* 4.9% = 12 Ed = 240-12 = 228 VAC
I cannot seem to get the percentage correct, what am I doing wrong?