Can Bilge Blower motors tolerate a 10% voltage drop when sizing DC cables?

Bilge blower motors generally should not tolerate a 10% voltage drop when sizing DC cables. Maintaining an appropriate voltage level is crucial for motor performance and reliability. A voltage drop beyond the acceptable range can lead to reduced efficiency, overheating, and potential failure of the motor over time.

In many marine applications, the recommended maximum voltage drop for DC systems is typically around 3% for the feeder circuit and 10% for branch circuits. However, bilge blowers, which are critical for safety and operation, are more sensitive to voltage variations. A higher voltage drop, such as 10%, may compromise their ability to function effectively, particularly under load conditions. Ensuring that the cable size is appropriate to minimize drop helps to maintain the integrity and longevity of the system, as well as ensure compliance with marine electrical standards.