Line loss is a decrease in the power supply from the source to the destination. As electricity flows energy is lost due to the heating of the conductor, caused by electrical resistance. AC motors that are utilized in dock levelers and scissor lifts, perform best with line loss less than 5% of the motors requirement. It’s important to determine the distance from the power source to the motor, identify the voltage specified and then calculate the proper gauge off wire to minimize line loss to the electric motor. Line loss is generally more of a concern with lower voltages such as 115/1/60. Line loss concerns increase as the amperage draw increases. With Loading Dock and Lift Equipment, increased hydraulic power unit motor horsepower sizing is the most common reason for amperage draw increases. For additional information http://www.energyaction.com.au/line-loss-factors.html

 

Mike Earle