hi all....
i've been trying to calculate the wire loss in a 3-phase wind generator...i expect 62 amps as maximum...the wires that i'll use are (each wire): 11 m of 2, 4mm wires joint together as to act as one wire..they have apprx. 1.5 ohms/1000m resistance, so for two wires joint together it will be 1.5/2 = 0.75 ohms/1000 m
i've seen Hugh's notes about line losses.....he explains how to calculate this loss and finally got to a formula:
loss (in watts) = (total amps)(total amps)(resistance in one wire)*2 (as i understood it)
so, concerning my machine:
resistance in one wire = (11/1000)*0.75 = 0.00825 ohms
so the loss = 62*62*0.00825*2 = 63.42 W
while somebody else ( i dont remember who ) said that we calculate the loss by:
loss (in W) = (2/3 * total amps)(2/3 * total amps)(resistance in one wire)
i get : 41.3*41.3*0.00825 = 14 W loss!
so which way is right? or are they both wrong?!!! if so, how to calculate this loss
thx in advance