Motor Rated Amps Lookup (50 Hz)
Select brand, phase, kW and bore size to view the motor’s rated current (In).
Rated current (In, A)
Reference: 1~ 230 V · 3~ 400 V · 50 Hz. Values are datasheet rated current (In).
Pumps Africa & Tools
Voltage Drop Calculator – Borehole Motors Voltage Drop Calculator
Metric units • Copper/Aluminium • Suited for 1-phase & 3-phase borehole motors
Compliance
Waiting for inputs…
Guideline: keep voltage drop ≤ 5% for long borehole runs to maintain reliable starts and efficiency.
Calculated current
–
A
Voltage drop
–
V
% drop
–
%
Recommended size
–
next standard mm²
Method (resistive approximation): 1-phase: ΔV = 2·I·ρ·L/A • 3-phase: ΔV = √3·I·ρ·L/A. ρ (Ω·mm²/m): Cu≈0.0175, Al≈0.0282 at ~20 °C. % drop = 100·ΔV/V.
