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Updates variables to fit correct calculation

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Patrick McDonagh
2017-03-02 15:48:51 -06:00
parent ca7dbfe2c4
commit 9561501ad9
1 changed files with 2 additions and 2 deletions
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4
cabledrop.py
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@@ -3,14 +3,14 @@ from math import sqrt
length = 10000.0 # feet
current = 10.4 # Amps
temperature = 250.0 # degress F
k75 = 10.37 # 1.26 / 1000.0 # ohms of 1 circular mil foot of conductor
k20 = 10.37 # 1.26 / 1000.0 # ohms of 1 circular mil foot of conductor
circular_mils = 10384.0 # cross-sectional area in circular mils of conductor
alpha_copper = 0.00393
alpha_aluminum = 0.00330
def voltage_drop(length, current, temperature, k75, circular_mils, alpha):
return sqrt(3) * k75 * (1.0 + alpha * ((5.0 / 9.0) * (temperature - 32.0) - 20.0)) * length * current / circular_mils
return sqrt(3) * k20 * (1.0 + alpha * ((5.0 / 9.0) * (temperature - 32.0) - 20.0)) * length * current / circular_mils
def calc_voltage_needed(input_voltage, voltage_drop):