But she had to check Step Two: Voltage Drop.
The pumps drew 200 Amps. The cable was rated for 245 Amps at 30°C in open air. On paper, a comfortable 20% buffer. electrical cable sizing calculation
Where: (P) = load power (W) (U_L) = line-to-line voltage (V) (\cos\phi) = power factor But she had to check Step Two: Voltage Drop
"Wait," she whispered. She looked at the Protection Device . The breaker was set to trip instantly at 250 Amps. electrical cable sizing calculation
A long cable run creates a voltage drop, which can cause equipment to malfunction or motors to fail to start.