Add 125/3 capability to power script + switch to f-strings

power_calcs.py

@@ -10,6 +10,7 @@ cable_size = {
     "16": 2.5,
     "32": 6.0,
     "63": 16,
+    "125": 35,
 }
 single_phase = {
     1.5: 31,
@@ -22,6 +23,7 @@ three_phase = {
     2.5: 16,
     6.0: 6.8,
     16: 2.5,
+    35: 1.1,
 }
 
 drop = 0
@@ -30,20 +32,20 @@ if "/3" in cabletype:
 else:
     drop = single_phase[cable_size[cabletype]]
 
-print("Voltage Drop (per ampere per metre): {}mV/A/m".format(drop))
+print(f"Voltage Drop (per ampere per metre): {drop}mV/A/m")
 
 assumed_load = int(sys.argv[2])
 length = int(sys.argv[3])
 
 total_drop = drop * assumed_load * length / 1000
 
-print("Total drop at {}A over {}m is: {}V".format(assumed_load, length, total_drop))
+print(f"Total drop at {assumed_load}A over {length}m is: {total_drop:.1f}V")
 if total_drop > voltage_limit:
     print("FAILED: VOLTAGE DROP TOO HIGH")
 max_length = (voltage_limit * 1000) / (drop * assumed_load)
-print("Maximum length of cable at this load: {}m".format(int(max_length)))
+print(f"Maximum length of cable at this load: {int(max_length)}m")
 
 r = total_drop / assumed_load
 pfc = 230 / r
 
-print("Estimated PFC is {:.1f}A".format(pfc))
+print(f"Estimated PFC is {pfc:.1f}A")